Atmospheric Sciences




A21A   CC:HALL C  Tues  0830h
Modeling Stratospheric Ozone Posters
Presiding: A Douglass, NASA Goddard Space Flight Center

   0830h   A21A-01  POSTER   An Investigation of Polar 
                    Ozone Column Recovery in the 1997 Southern 
                    Hemispherre Winter: *J M Pierson, A R 
                    Douglass, S R Kawa, J W Waters, J M Russell
   0830h   A21A-02  POSTER   The Non-Local 
                    Temperature-Ozone Hole Sensitivity: Model 
                    and Observation Comparison: *S  Wong, D  
                    Shindell, D  Rind
   0830h   A21A-03  POSTER   An Experimental Study of the 
                    Branching Ratio of the OH + ClO Reaction: 
                    Implications for Modeling Stratospheric Ozone: 
                    *J B Lipson, T  Beiderhase, L T Molina, M J 
                    Molina, M  Olzmann
   0830h   A21A-04  POSTER   A New GC-MS Apparatus to 
                    Investigate Atmospheric Chemical Reactions 
                    on Aerosol Particles: *M  Haider, Y  Mantz, 
                    L T Molina, M J Molina
   0830h   A21A-05  POSTER   Calculation of Ozone Trends 
                    in the AER 2-D Model: Sensitivity to 
                    Interannual Temperature Variations and 
                    Transport Barriers: *D  Weisenstein, M K Ko, 
                    C  Scott, R L Shia
   0830h   A21A-06  POSTER   On the Climatology of 
                    Atmospheric Constituents in a Middle 
                    Atmosphere Model: *J de Grandpre, S R Beagley, 
                    J W Sandilands, D J Chartrand, J C McConnell
   0830h   A21A-07  POSTER   Assessment of Dynamical 
                    Variability in Total Ozone Using the NCEP 
                    Reanalysis: *J P McCormack, A J Miller, R M 
                    Nagatani
   0830h   A21A-08  POSTER   Long Ozone Simulations Using 
                    Assimilated Winds: *A R Douglass, S R Kawa, 
                    R B Rood



A21B   CC:HALL C  Tues  0830h
Stratosphere and Upper Atmosphere Posters
Presiding: K W Jucks, Harvard-Smithsonian Center for Astrophys

   0830h   A21B-01  POSTER   Stationary Anomalies in 
                    Stratospheric Meteorological Data Sets: K P 
                    Bowman, *K  Hoppel, R  Swinbank
   0830h   A21B-02  POSTER   Six Years of SUSIM/UARS 
                    Thermospheric Molecular Oxygen Data: 
                    Comparison With the MSIS90 Model: *J D Lumpe, 
                    D K Prinz
   0830h   A21B-03  POSTER   Ground-Based Measurements of 
                    Stratospheric ClO in the Arctic Spring of 
                    1997 Over Spitzbergen: *V Nagar, M McDonald, 
                    R L de Zafra
   0830h   A21B-04  POSTER   The UARS PEM Energetic 
                    Particle Climatology: Status and Applications: 
                    *J R Sharber, R A Frahm, G  Crowley, A J 
                    Ridley, R  Link, J D Winningham, E E Gaines, 
                    R W Nightingale, D L Chenette, W R Keith
   0830h   A21B-05  POSTER   Photchemical Partitioning of 
                    HOx, Cly, and NOy in the Middle and Upper 
                    Stratosphere: *K W Jucks, D G Johnson, W A 
                    Traub, K V Chance, G C Toon, R A Stachnik, 
                    G B Osterman, R J Salawitch
   0830h   A21B-06  POSTER   Unusual Stratospheric 
                    Particulate Collected During the September 
                    1997 QCM Cascade Impactor ER-2 Flight 
                    Experiments: J S Grant, *V R Morris, A N 
                    Thorpe
   0830h   A21B-07  POSTER   Lower Stratosphere's 
                    Temperature Change Following the Mt. 
                    Pinatubo Eruption: *C S Long, M E Gelman, R M 
                    Nagatani, S  Zhou, J  McCormack, A J Miller
   0830h   A21B-08  POSTER   Lidar Observations of 
                    Noctilucent Clouds and Wave Dynamics at 
                    Sondrestrom, Greenland: *A J Gerrard, T J 
                    Kane, J P Thayer
   0830h   A21B-09  POSTER   Using Satellite Data to 
                    Study the Development of Polar Stratospheric 
                    Clouds Along Trajectories: *H M Steele, K  
                    Drdla, R P Turco, R M Bevilacqua, J D Lumpe, 
                    D J Debrestian
   0830h   A21B-10  POSTER   Coordinated Observations of 
                    HCN and N~K2~LO the Middle Atmosphere: 
                    Implications for HO~Kx~L Chemistry and Use 
                    of HCN as a Dynamical Tracer: *B J Sandor, 
                    R T Clancy
   0830h   A21B-11  POSTER   Analysis of Summertime Ozone 
                    Zonal Wave Patterns Observed by POAM II in 
                    the Northern Hemisphere High Latitudes: *K  
                    Hoppel, R  Bevilacqua, M  Summers, K  Bowman
   0830h   A21B-12  POSTER   Model Simulations of 
                    Hydroxyl Abundance in the Middle Atmosphere: 
                    *T P Canty, K  Minschwaner
   0830h   A21B-13  POSTER   Atmospheric Radical 
                    Production by Excitation of Vibrational 
                    Overtones via Absorption of Visible Light: 
                    D J Donaldson, G J Frost, K H Rosenlof, A F 
                    Tuck, *V  Vaida



A21C   CC:HALL C  Tues  0830h
Aerosols, Clouds and Radiative Processes Posters
Presiding: B N Duncan, Harvard Univ

   0830h   A21C-01  POSTER   An Investigation Into the 
                    Effects of Aerosols and Clouds on 
                    Downwelling Solar Radiation: L S Klein, D D 
                    Venable, *A M Farah, J D Molitoris, K E Grant, 
                    A S Grossman, J F Arens
   0830h   A21C-02  POSTER   Global Scale Satellite 
                    Observations of Radiative Fluxes: 
                    Sensitivity to New Sources of Water Vapor: *J  
                    Gu, R T Pinker, I  Laszlo
   0830h   A21C-03  POSTER   A Polynomial 
                    Parameterization of Photodissociation Rate 
                    Constants for Use in Chemical Tracer Models 
                    (CTMs): *B N Duncan, C M Spivakovsky
   0830h   A21C-04  POSTER   Observational Study of 
                    Broadband and Spectral UV Transmission 
                    Through an Aerosol Layer: *B N Wenny, J J 
                    DeLuisi, V K Saxena, M G Seybold
   0830h   A21C-05  POSTER   On the Chemical, 
                    Microphysical and Radiative Properties of 
                    Clouds From a Four Year Field Study for the 
                    Southeastern U.S.: *S  Menon, V K Saxena
   0830h   A21C-06  POSTER   Atmospheric Extinction 
                    Evolution in Crimea (Ukraine) for the Last 
                    70 Years: *E I Terez, G A Terez
   0830h   A21C-07  POSTER   Scattering in the Limb of a 
                    Spherical-Shell Atmosphere as Computed by a 
                    Scalar Radiative Transfer Model: *R P 
                    Loughman, D E Flittner, B M Herman
   0830h   A21C-08  POSTER   Aerosol Remote Sensing From 
                    POLDER Spaceborne Instrument: *P Goloub, J L 
                    Deuze, D Tanre, M Herman, F M Breon
   0830h   A21C-09  POSTER   POAM II Polar Climatology of 
                    Aerosol Surface Area, Volume and Effective 
                    Radius: *J D Lumpe, H M Steele, R M 
                    Bevilacqua
   0830h   A21C-10  POSTER   A Multi-Instrument Approach 
                    for the Characterization of the Vertical 
                    Structure of Aerosol Optical Properties: *J  
                    Redemann, R P Turco, K N Liou, R F Pueschel, 
                    W B Grant, E V Browell
   0830h   A21C-11  POSTER   The Effect of Tropospheric 
                    Clouds on the Lower Stratospheric Radiative 
                    Heating Rate During the Southern Hemisphere 
                    Winter: *J A Hicke, A F Tuck
   0830h   A21C-12  POSTER   The Effect of Thermal 
                    Radiation on Convective Instability: *V E 
                    Larson
   0830h   A21C-13  POSTER   Sensitivity of Single-Column 
                    Model Results to Cumulus Convection 
                    Parameterization Schemes: *S C Xie, M H Zhang
   0830h   A21C-14  POSTER   Atmospheric Sulfur and Deep 
                    Convective Clouds in Tropical Pacific: A 
                    Model Study: *C Andronache, L J Donner, C J 
                    Seman, V Ramaswamy, R S Hemler



A21D   CC:202  Tues  0830h
Seasonal and Interannual Variability, and Trends, in 
Stratospheric Trace Gasses and Aerosol from UAR
Presiding: A E Roche, Lockheed Martin Palo Alto; R S Stolarski, 
           NASA Goddard Space Flight Center

   0830h   A21D-01  INVITED   Atmospheric Trends and 
                    Variability Observed by HALOE From the UARS 
                    Platform: *J M Russell, G D Considine, L E 
                    Deaver, E E Remsberg
   0845h   A21D-02  INVITED   Trends in Trace Species 
                    (ClO, HNO~K3~L) Measured by the Upper 
                    Atmosphere Research Satellite Microwave Limb 
                    Sounder: 1991-1997: *L  Froidevaux, J W 
                    Waters, W G Read, M L Santee, P S Connell, 
                    D E Kinnison
   0900h   A21D-03   Space-Time Patterns of Trends in 
                    Stratospheric Constituents Observed by UARS: 
                    *W J Randel, F  Wu, J M Russell, J  Waters, 
                    M  Santee
   0915h   A21D-04   Seasonal and Interannual Variations 
                    in UARS MLS High-Latitude HNO~K3~L Data: *M L 
                    Santee, G L Manney, L  Froidevaux, W G Read, 
                    J W Waters
   0930h   A21D-05   Impact of Solar-Occultation Sampling 
                    on Ozone Variability Deduced From a NASA 
                    Langley IMPACT Model Simulation: *T D Fairlie, 
                    R B Pierce, G D Considine, J A Al-Saadi, W L 
                    Grose, J M Russell
   0945h   A21D-06  INVITED   The UARS Reference 
                    Atmosphere Project: *J J Remedios
   1000h   Break
   1020h   A21D-07  INVITED   Stratospheric Aerosols: 
                    Their Seasonal and Interannual Variability 
                    and Climatology: *M P McCormick, P H Wang
   1035h   A21D-08  INVITED   Variability in Tropical 
                    Cirrus Over an 18 Month Period as Observed 
                    by UARS-CLAES: *J L Mergenthaler, A E Roche, 
                    J B Kumer, G A Ely
   1050h   A21D-09   POAM II Observations of Aerosol 
                    Layers in the Wintertime Arctic Outside the 
                    Polar Vortex: *M  Fromm, J  Hornstein, K  
                    Hoppel, R  Bevilacqua, E  Shettle
   1105h   A21D-10   Trajectory Hunting: Analysis of the 
                    UARS Measurements Showing Rapid Chlorine 
                    Activation: *M Y Danilin, M L Santee, J M 
                    Rodriguez, M K W Ko, G L Manney, J W Waters, 
                    J L Mergenthaler, J B Kumer, H C Pumphrey, A 
                    Tabazadeh
   1120h   A21D-11   Photochemical Implications of Upper 
                    Stratospheric Trace Constituent Changes 
                    Observed by HALOE, 1992-1995: *D E Siskind, 
                    J  Lean, L  Froidevaux, J M Russell
   1135h   A21D-12   On the Springtime Persistence of 
                    Polar Vortex and Ozone Hole: *S  Zhou, M E 
                    Gelman, A J Miller



A21E   CC:207  Tues  0830h
General Atmospheric Chemistry
Presiding: N M Donahue, Harvard Univ; M A Carroll, 
           Univ of Michigan

   0830h   A21E-01   A Model Quantification of OH Sources 
                    in the Continental Troposphere: *I  Bey, B  
                    Aumont, G  Toupance
   0845h   A21E-02   Hydrogen Radical Production 
                    Processes and Concentrations Inferred From 
                    Trace Gas Measurements in the Remote Central 
                    and South Pacific Basin: *C A Cantrell, R E 
                    Shetter, B L Lefer
   0900h   A21E-03   Isoprene Emission from Tropical 
                    Forest Canopy Leaves: *M  Keller, M T Lerdau
   0915h   A21E-04   Development of a Condensed Isoprene 
                    Oxidation Mechanism for Global Atmospheric 
                    Modeling: *U  Poeschl, N  Poisson, R 
                    von Kuhlmann, M  Kanakidou, M  Lawrence, P J 
                    Crutzen
   0930h   A21E-05   The Oxidation of Ethene and Propene: 
                    J J Orlando, *G S Tyndall, M Bilde, C 
                    Ferronato, T J Wallington, L Vereecken, J 
                    Peeters
   0945h   A21E-06   Assimilation of Global Tropospheric 
                    CO Observations: *B V Khattatov, J C Gille, 
                    P F Levelt, G P Brasseur, D A Hauglustaine, 
                    S  Walters, P J Rasch, J F Muller, C  Granier, 
                    X X Tie
   1000h   Break
   1030h   A21E-07   Data-Based Climatologies of 
                    Tropospheric Carbon Monoxide and Ozone: *L K 
                    Emmons, D  Hauglustaine, M A Carroll, G  
                    Brasseur
   1045h   A21E-08   Evolution of the Oxidizing Power of 
                    the Atmosphere Since Preindustrial Times: *Y  
                    Wang, D J Jacob
   1100h   A21E-09   An Evaluation of Chemistry's Role in 
                    the Winter-Spring Ozone Maximum Found in the 
                    Northern Free Troposphere: J J Yienger, A A 
                    Klonecki, H Levy, *W J Moxim, G R Carmichael
   1115h   A21E-10   The Summer 1997 PHotochemistry 
                    Experiment: An Overview: *M A Carroll, T  
                    Thornberry, L  Emmons, S  Sillman, P  Samson, 
                    J  Teeri, S  Bertman, M  Pippin, K  Ostling, 
                    P  Shepson, J  Grossenbacher, O  
                    Herrera-Gomez, B  Splawn, A L Sumner, J  
                    Moody, D  Hastie, C  Mihele, H  Westberg, C  
                    Claiborn, E  Allwine, V  Young, R  Roebuck, 
                    K  Fischer, A  Barron, K  Paterson, J  Sagady, 
                    R  Zika, C  Farmer
   1130h   A21E-11   The Relationship Between Isoprene 
                    and Radicals During the PROPHET Field Study: 
                    *D R Hastie, C M Mihele, P B Shepson, O  
                    Herrera-Gomez, B G Splawn, H  Westberg, B  
                    Lamb
   1145h   A21E-12   Simultaneous Measurements of NO, 
                    NO2, and NOY During the PROPHET Fall 1997 
                    and Winter 1998 Seasonal Intensives: *T  
                    Thornberry, L K Emmons, M A Carroll, J  Moody, 
                    O  Cooper, K  Higgins, S  Bertman, M  Pippin, 
                    K  Ostling



A22A   CC:HALL C  Tues  1330h
General Atmospheric Chemistry Posters
Presiding: W T Rawlins, Physical Sciences, Inc

   1330h   A22A-01  POSTER   Assessing the Fuel Component 
                    Contributions to 2-Methyl-Propene Emission 
                    From Spark Ignition Engines: *J M Van Doren, 
                    K L Cappuccio, T E Hannon, H  Liu, W K Cheng
   1330h   A22A-02  POSTER   Isoprene Emissions From 
                    Scrub Oak Vegetation as Affected by Growth 
                    in Elevated Carbon Dioxide: *P T Buckley
   1330h   A22A-03  POSTER   Spatial and Temporal 
                    Variability of Nitrogen Oxides Fluxes From a 
                    Fertilized Tree Plantation in Costa Rica: *A M 
                    Weitz, P M Crill, M Keller, E Linder, E 
                    Veldkamp
   1330h   A22A-04  POSTER   The delta~L15~KN and 
                    delta~L18~KO of N~K2~LO Produced by Pure 
                    Cultures of Methanotrophic Bacteria: *K W 
                    Mandernack, D  Updegraff, T  Rahn, M  Wahlen
   1330h   A22A-05  POSTER   Hot Lava as the Source of 
                    Fixed Nitrogen in a Cloud Forest: *S  
                    Coeppicus, B J Huebert
   1330h   A22A-06  POSTER   A Global Estimate of the 
                    Uptake of Methyl Bromide (CH~K3~LBr) by 
                    Cultivated Soil: *R K Varner, P M Crill, W 
                    Talbot, J H Shorter
   1330h   A22A-07  POSTER   Methyl Bromide: Sources and 
                    Sinks in the Ocean and Land: *C G Morgan, K R 
                    Redecker-Dewulf, Y L Yung, M  Allen, M  Carr, 
                    D  Halpern, A  Anbar
   1330h   A22A-08  POSTER   Trace Gas Measurements With 
                    a High Resolution Fourier Transform 
                    Spectrometer at Arrival Heights, Antarctica: 
                    *B J Connor, S W Wood, N B Jones, T M Stephen, 
                    F J Murcray
   1330h   A22A-09  POSTER   Measurements of HBr 
                    Interactions With Water-Ice: Atmospheric 
                    Implications: *M K Dubey, L  Foster, J L 
                    Casson, M S Johal, B F Henson, J M Robinson
   1330h   A22A-10  POSTER   SOLSE/LORE: Preliminary 
                    Results of a New Technique to Measure Ozone 
                    Profiles Using Limb Scattering: *R D McPeters, 
                    E Hilsenrath, T Brown, S Janz
   1330h   A22A-11  POSTER   An Algorithm for Retrieving 
                    Ozone Profiles From Shuttle Observations of 
                    Limb Scattered UV and Visible Light: *D E 
                    Flittner, B M Herman, R D McPeters, E  
                    Hilsenrath, S J Janz
   1330h   A22A-12  POSTER   Laboratory Intercomparisons 
                    and In-Flight Measurements of Ozone by a 
                    Prototype UV Ozone Photometer: *W T Rawlins, 
                    D M Sonnenfroh, A H Burbo, M  Proffitt
   1330h   A22A-13  POSTER   Correction of 
                    Electrochemical Concentration Cell 
                    Ozonesonde Flight Data Using Pre-Flight 
                    Simulation Correction Factors: *J L Tyvoll, 
                    A L Torres, K R LaGarde, S A Lawson
   1330h   A22A-14  POSTER   Ozone Vertical Profiles Over 
                    Tibetan-Qinghhai Plateau: *W Yu, J Wu
   1330h   A22A-15  POSTER   Correlation Between Total 
                    Ozone and Geomagnetic Activity in the 
                    Southern Atlantic Magnetic Anomaly: E  
                    Martinez, *S  Duhau
   1330h   A22A-16  POSTER   Stability of Aerosol 
                    Distribution in Remote Marine Boundary Layer: 
                    *C  Andronache, W L Chameides
   1330h   A22A-17  POSTER   Millimeter Wave 
                    Spectroscopic Measurements of HNO~K3~L Over 
                    the South Pole for the 1995 Polar Fall, 
                    Winter, and Spring: *M K McDonald, R L 
                    de Zafra, R Chamberlain
   1330h   A22A-18  POSTER   Near IR Photolysis of RO2 in 
                    the Troposphere: G J Frost, G B Ellison, *V  
                    Vaida
   1330h   A22A-19  POSTER   Experimental Evidence for 
                    Photo Assisted Heterogeneous Loss of Nitrous 
                    Oxide and Its Implications: *S S Prasad



A22B   CC:HALL C  Tues  1330h
Beginning the Future in Atmospheric Science Posters
Presiding: D R Worsnop, Aerodyne Research, Inc; J M Van Doren, 
           College of the Holy Cross

   1330h   A22B-01  POSTER   Lightning Activity Within 
                    the Thunderstorm Environment: *P S Heard, V R 
                    Morris, G S Jenkins, J E Dye
   1330h   A22B-02  POSTER   Carbon Dioxide Condensation 
                    on Ice: Implications for the Martian 
                    Atmosphere: *D L Glandorf, R T Tisdale, M A 
                    Tolbert, O B Toon
   1330h   A22B-03  POSTER   Possible Air Transport 
                    Pathways for Radionuclides for the Kola 
                    Nuclear Power Plant: *A G Mahura, D A Jaffe, 
                    A A Baklanov, R J Andres, L Thaning, R 
                    Bergman, J T Merrill
   1330h   A22B-04  POSTER   Atmospheric Input of Trace 
                    Metals to the Gulf of Maine: *S M Pike, S B 
                    Moran
   1330h   A22B-05  POSTER   Comparison of Aerosol Mass 
                    Identified by Gravimetric and Ion 
                    Chromatographic Analysis of Moudi Samples: *J 
                    Pfeiffer, B J Huebert, S G Howell, L Zhuang



A22C   CC:HALL C  Tues  1330h
Trends in Ozone as a Function of Altitude Posters
Presiding: R S Stolarski, NASA Goddard Space Flight Center; W 
           Randel, NCAR

   1330h   A22C-01  POSTER   Comparisons of 
                    Climatological Ozone Profiles (1988-1996) 
                    From SAGE II and Balloonsonde Data Using 
                    Potential Vorticity-Isentropic Coordinate 
                    Transformations: *S M Hollandsworth, M R 
                    Schoeberl, C Weaver
   1330h   A22C-02  POSTER   Ozone Profile Climatology 
                    Derived From Balloonsonde and SAGE II Data: 
                    *G J Labow, J Logan, S M Hollandsworth, R D 
                    McPeters
   1330h   A22C-03  POSTER   The Effect of Aerosols on 
                    Ozone Trends From Solar Occultation 
                    Experiments: *H M Steele, R P Turco
   1330h   A22C-04  POSTER   Modulation of Tropospheric 
                    Ozone at Northern Midlatitudes by the El 
                    Nino/Southern Oscillation: Implications for 
                    Trend Analysis: *A O Langford, T J O'Leary, 
                    C D Masters, K C Aikin, M H Proffitt
   1330h   A22C-05  POSTER   Improvements to the SAGE II 
                    Processing Algorithm: *N  Iyer, S P Burton, 
                    J M Zawodny, L W Thomason
   1330h   A22C-06  POSTER   Total Ozone Trends Derived 
                    From a Unified Satellite Ozone Record 
                    1970-1998: *R S Stolarski, R D McPeters, G J 
                    Labow, S M Hollandsworth, L E Flynn



A22D   CC:207  Tues  1330h
Diagnosing Atmospheric Transport:  The Age of Air
Presiding: T Hall, NASA Goddard Inst for Space Studies; K Boering, 
           Harvard Univ

   1330h   A22D-01  INVITED   Simultaneous Use of SF~K6~, 
                    CF~K4~, and CO~K2~ as Tracers of the Age of 
                    Stratospheric Air: *J  Harnisch, W  Bischof, 
                    R  Borchers, P  Fabian, M  Maiss
   1345h   A22D-02   Comparison of Stratospheric Mean Age 
                    Values Derived From CO2 and SF6 Measurements: 
                    *M Strunk, A Engel, H Glatzel-Mattheier, I 
                    Levin, U Schmidt, C M Volk
   1400h   A22D-03  INVITED   Mean Age of the Air Mass 
                    Determined Using Real-Time Airborne 
                    Measurements of Sulfur Hexafluoride: *J W 
                    Elkins
   1415h   A22D-04   Stratospheric Mean Ages From In Situ 
                    Measurements of Carbon Dioxide From Aircraft 
                    and High-Altitude Balloons: *A E Andrews, K A 
                    Boering, S C Wofsy, B C Daube, M  Loewenstein, 
                    J R Podolske, H  Jost, C R Webster, R D May, 
                    R  Herman, D  Scott, J W Elkins, F L Moore, 
                    P A Romashkin, D F Hurst, E A Ray
   1430h   A22D-05   Episodic Transport Into the Tropical 
                    Stratosphere: *H  Jost, M  Loewenstein
   1445h   A22D-06   The Time Scale for Entrainment Into 
                    the Tropical Stratosphere up to 32 km: *C M 
                    Volk, F L Moore, J W Elkins, D W Fahey, G S 
                    Dutton, E A Ray, R J Salawitch
   1500h   Break
   1520h   A22D-07   The Age of Air in a Leaky Pipe Model 
                    of Stratospheric Transport: *J L Neu, R A 
                    Plumb
   1535h   A22D-08   Air Mass Age, Mixing of Air Masses 
                    and Changes in Hydrocarbon Concentrations: *J  
                    Rudolph
   1550h   A22D-09   Transport Time of Stratospheric Air 
                    From Tropopause to Ground Level: *L  Husain, 
                    V A Dutkiewicz
   1605h   A22D-10  INVITED   Determination of Empirical 
                    Age Spectra From In Situ Observations of 
                    Stratospheric Carbon Dioxide: *S C Wofsy, A E 
                    Andrews, K A Boering, B C Daube
   1620h   A22D-11  INVITED   Long Term Trajectory 
                    Integrations and Age-of-Air: *M R Schoeberl, 
                    A  Dessler, C  Jackman, E  Fleming, J  
                    Rosenfield
   1635h   A22D-12   Age-of-Air Experiments With the GFDL 
                    SKYHI General Circulation Model: *J  
                    Eluszkiewicz, R S Hemler, L  Perliski, J D 
                    Mahlman
   1650h   A22D-13   Stratospheric Transport Timescales: 
                    An Eigenvalue Analysis: *T M Hall



A31A   CC:HALL C  Wed  0830h
Regional and Applied Studies Posters
Presiding: S G Zemba, Cambridge Environmental  Inc

   0830h   A31A-01  POSTER   Recent Measurements of Urban 
                    Metabolism and Trace Gas Respiration: *J H 
                    Shorter, J B McManus, D D Nelson, M S 
                    Zahniser, C E Kolb, E J Allwine, H  Westberg, 
                    S  O'Neill, B K Lamb, P M Crill, R W Talbot, 
                    C H Yeang, J Ferreira, G J McRae
   0830h   A31A-02  POSTER   Measurement of Nitrous Acid 
                    and Nitric Acid in an Urban Environment: *K  
                    Civerolo, X  Zhou, G  Deng, H  Qiao
   0830h   A31A-03  POSTER   An Assessment of Sulfur 
                    Deposition Pathways in Asia: *Y Xu, G R 
                    Carmichael
   0830h   A31A-04  POSTER   A Physical and Chemical 
                    Analysis of the 1997 Haze in Southeast Asia: 
                    *R  Balasubramanian, Q  Zhen, Z  Zhong, V  
                    Thevaraj, R  Begum
   0830h   A31A-05  POSTER   Air Pollution Control and 
                    Energy Conservation in Taiwan: *H  Chang, J  
                    Yu
   0830h   A31A-06  POSTER   Characterization of 
                    Particulate Matter in Corpus Christi Urban 
                    Airshed: *S  Natarajan, K  John
   0830h   A31A-07  POSTER   Regional Characterization of 
                    "Black Carbon" Transport Over the Southeast 
                    U.S.: *C P Petrusak, V K Saxena, C P Bahrmann
   0830h   A31A-08  POSTER   Modeling of Wet Acid 
                    Deposition in Eastern North America: *S G 
                    Zemba, R Paulding, D Krebs



A31B   CC:HALL C  Wed  0830h
Ozone Alkene Reactions Posters
Presiding: N M Donahue, Harvard Univ; M A Carroll, 
           Univ of Michigan

   0830h   A31B-01  POSTER   Direct Measurement of 
                    Radical Production in the Ozonolysis of 
                    Olefins: *N M Donahue, J H Kroll, J G 
                    Anderson, K L Demerjian
   0830h   A31B-02  POSTER   Radical Formation in 
                    Ozone-Alkene Reactions: *K Treacy, M  Gurrie, 
                    H  Sidebottom
   0830h   A31B-03  POSTER   Pressure Dependence of OH 
                    Yield From Ozone-Alkene Reactions: *J D 
                    Fenske, S E Paulson
   0830h   A31B-04  POSTER   Kinetic Measurements of the 
                    OH-Initiated Oxidation of Isoprene: Radical 
                    Regeneration by the Reaction of 
                    Isoprene-Based Peroxy Radicals With Nitric 
                    Oxide: D  L'Esperance, G  Martin, *P  Stevens
   0830h   A31B-05  POSTER   An Ab Initio Study of the 
                    Isoprene + Ozone Reaction Path: *M R Nelson, 
                    A M Gabrielli, M H Kim, R F Borkman



A31C   CC:HALL C  Wed  0830h
Climate, Paleoclimate and Dynamics Posters
Presiding: P A Schultz, National Academy of Sciences

   0830h   A31C-01  POSTER   A 3-D, Statistical Climate 
                    Model for Transient, Integrated Assessments 
                    of Climate Change: *P A Schultz, E J Barron, 
                    R  Crane
   0830h   A31C-02  POSTER   A Climate Model With 
                    Hydrological Cycle and Sea Ice Physics to 
                    Study Feedback Mechanisms Within Climate 
                    System: *Y  Zhu
   0830h   A31C-03  POSTER   The Relationship of 
                    Tropospheric Ozone to Climate Change: *L J 
                    Mickley, P P Murti, D J Jacob, J A Logan, D  
                    Rind
   0830h   A31C-04  POSTER   Testing for Global Warming 
                    Against Stationary Natural Climate 
                    Variability: J D Pelletier
   0830h   A31C-05  POSTER   Reconstructed Summer (JJA) 
                    Streamflow in the White River of Arkansas 
                    From a Millennium of Tree Rings: *M K 
                    Cleaveland
   0830h   A31C-06  POSTER   Utility of Varved Sediments 
                    From Green Lake, NY to Reconstruct 
                    High-Resolution Holocene Atmospheric 
                    Circulation Patterns in the Northeastern 
                    United States: *M E Kirby, H T Mullins, A  
                    Burnett, M F Hilfinger
   0830h   A31C-07  POSTER   Concentration, Accumulation 
                    and, Flux in Central West Antarctic Ice Cores: 
                    D B Reusch, P A Mayewski, *S I Whitlow
   0830h   A31C-08  POSTER   Iridium, Copper, Silver and 
                    Aluminum Seasonal Variability in the Snows 
                    of Central Greenland: *J  Wu, E  Boyle, R  
                    Sherrell
   0830h   A31C-09  POSTER   Comparative States of the 
                    Atmosphere in 1994 and 1995 From the ODERACS 
                    I and II Experiments: *A Tan
   0830h   A31C-10  POSTER   Synoptic-Scale Variability 
                    in the Tropical Western North Pacific: *A H 
                    Sobel, C S Bretherton



A31D   CC:210  Wed  0830h
Charney Lecture
Presiding: M R Schoeberl, NASA Goddard Space Flight Center

   0830h   INTRODUCTION: M R Schoeberl,
                    NASA Goddard Space Flight Center
   0835h   A31D-01  INVITED   Chemistry, Radiation, and 
                    Climate: What Are the Connections?: *J G 
                    Anderson



A31E   CC:210  Wed  1000h
Beginning the Future in Atmospheric Science I
Presiding: D R Worsnop, Aerodyne Research, Inc; J M Van Doren, 
           College of the Holy Cross

   1000h   INTRODUCTION: D R Worsnop,
                    Aerodyne Research, Inc
   1005h   A31E-01   FTIR Studies on Lifetime 
                    Prolongation of Stratospheric Ice Particles 
                    Due to NAT Coating: *U M Biermann, J N 
                    Crowley, T  Huthwelker, G K Moortgat, P J 
                    Crutzen, T  Peter
   1020h   A31E-02   Composition- and 
                    Temperature-Dependent Complex Refractive 
                    Indices of Sulfuric Acid/Water Aerosols 
                    Under Stratospheric Conditions: *M L Norman, 
                    R F Niedziela, C  DeForest, R E Miller, D R 
                    Worsnop
   1035h   A31E-03   Spectroscopic Probes of the 
                    Composition and Morphology of Inorganic Salt 
                    Aerosols: *D D Weis, G E Ewing
   1050h   A31E-04   Deliquescence and Ice Nucleation 
                    Properties of Ammonium-Salt Aerosol: *T B 
                    Onasch, R L Siefert, B J Murray, M A Wilson, 
                    M A Tolbert
   1105h   A31E-05   Heterogeneous Uptake of Gas-Phase 
                    SO~K2~L, H~K2~LS, and CO~K2~L: *Q  Shi, J  
                    Boniface, Y Q Li, O V Rattigan, E  Swartz, P  
                    Davidovits, D R Worsnop, J T Jayne, C E Kolb
   1120h   A31E-06   Uptake of C1-C4 Alcohols During 
                    Vapor Depositional Ice Growth: *W  Huffman, 
                    J  Snider
   1135h   A31E-07   Heterogeneous Reactions of 
                    HOCl+HBr-->BrCl+H~K2~LO and 
                    HOBr+HCl-->BrCl+H~K2~LO on Ice Films: *L  Chu, 
                    L T Chu
   1150h   A31E-08   Modeling Saharan Dust Emissions and 
                    Optical Properties: *P R Colarco, I N Sokolik, 
                    O B Toon



A31F   CC:202  Wed  0830h
Modeling Stratospheric Ozone
Presiding: A Douglass, NASA Goddard Space Flight Center; R S 
           Stolarski, NASA Goddard Space Flight Center

   0830h   A31F-01   Modeled Ozone Loss Rates in the 
                    Arctic Stratosphere Compared With Results of 
                    the Match Experiments: *G  Becker, R  Muller, 
                    D S McKenna, M  Rex
   0845h   A31F-02   Measured and Simulated Chemical 
                    Ozone Loss in the Arctic Polar Vortex 1995-96: 
                    *C  Deniel, R M Bevilacqua, F  Lefevre, J P 
                    Pommereau
   0900h   A31F-03   Lagrangian Photochemical Modeling of 
                    Ozone in the Summer Polar Stratosphere 
                    During the POLARIS Aircraft Campaign: R B 
                    Pierce, *T D Fairlie, J A Al-Saadi, J R Olson, 
                    R S Eckman, W L Grose, J M Russell
   0915h   A31F-04   Diffusion Versus Nonlocal Models of 
                    Stratospheric Mixing: Theory and Practice: 
                    *A H Sobel
   0930h   A31F-05   The Role of Planetary Wave Activity 
                    on Interannual Variability in Total Ozone 
                    During Northern Winter: *A C Fusco, M L Salby
   0945h   A31F-06   Simulation of the Ozone QBO in a 
                    Comprehensive GCM: L  Perliski, *K  Hamilton



A31G   CC:202  Wed  1020h
Trends in Ozone as a Function of Altitude
Presiding: R S Stolarski, NASA Goddard Space Flight Center; W 
           Randel, NCAR

   1020h   A31G-01  INVITED   Trends in the Altitude 
                    Profile of Ozone: *R S Stolarski, W J Randel, 
                    J A Logan, M J Newchurch, D Cunnold, S M 
                    Hollandsworth
   1035h   A31G-02  INVITED   Trends in Upper 
                    Stratospheric Ozone: *M J Newchurch, L  
                    Bishop, D  Cunnold, S  Hollandsworth, R  
                    McPeters, J  Miller, W  Randel, G  Reinsel, 
                    R  Stolarski, R  Wang, E S Yang
   1055h   A31G-03  INVITED   Ozone Trends in the Lower 
                    Stratosphere: H J Wang, *D M Cunnold, J  
                    Logan, L  Thomason, J  Zawodny
   1115h   A31G-04  INVITED   Trends in the Ozonesonde 
                    Data 0-27 km: A Comparison of Two Analyses: 
                    *J A Logan, I A Megretskaia, A J Miller, D  
                    Choi, L  Zhang, G C Tiao
   1135h   A31G-05   Total Ozone Trends at Northern 
                    Midlatitudes: Dynamical Transport 
                    Contributions: L L Hood, M  Beulen, S  Rossi
   1150h   A31G-06   Ozonesonde Profile Trends at the 
                    South Pole From 1986 to 1997: Implications 
                    for Recovery of Antarctic Ozone Loss: *D J 
                    Hofmann, S J Oltmanss, B J Johnson, J M 
                    Harris



A32A   CC:HALL C  Wed  1330h
Lightning and Electricity Posters
Presiding: J D Molitoris, Lawrence Livermore National Lab

   1330h   A32A-01  POSTER   Spatial and Temporal 
                    Structure of Sprites and Transient Luminous 
                    Events: *J D Molitoris, E I Davis, A M Farah, 
                    D D Venable
   1330h   A32A-02  POSTER   A Study of the Relationship 
                    of Lightning-Induced Transient Luminous 
                    Events (Sprites) to Atmospheric Structure: 
                    *A M Farah, J D Molitoris, E I Davis, D D 
                    Venable
   1330h   A32A-03  POSTER   Spectroscopy and Chemical 
                    Kinetics of Sprites: *W T Rawlins, B D Green, 
                    M E Fraser, R A Armstrong
   1330h   A32A-04  POSTER   Measurement of Upward 
                    Lightning Using RPVs: *J G Houser, R A 
                    Goldberg, M D Desch, W M Farrell
   1330h   A32A-05  POSTER   Shock Deformation of Rocks 
                    Due to Lightning Discharges: *J  Karfunkel, 
                    A  Banko, M  Chaves, J  Addad
   1330h   A32A-06  POSTER   Nitric Oxide Production by 
                    Simulated Lightning: Dependence on Current, 
                    Energy, and Pressure: *G C Goldenbaum, A W 
                    DeSilva, R R Dickerson, Y  Wang
   1330h   A32A-07  INVITED  POSTER   Modeling of 
                    High-Latitude Thermosphere Joule Heating at 
                    High Spatial/Temporal Resolution: *F  Li, T L 
                    Killeen, A G Burns, W  Wang, Q  Wu, R  Roble, 
                    L A Frank, J B Siywarth



A32B   CC:HALL C  Wed  1330h
Atmospheric Effects of Aviation Posters
Presiding: R Kawa, NASA Goddard Space Flight Center

   1330h   A32B-01  POSTER   Impact of HNO~K3~L on Ice 
                    Evaporation Rates Under Upper 
                    Tropospheric/Lower Stratospheric Conditions: 
                    *M A Zondlo, M S Warshawsky, M A Tolbert
   1330h   A32B-02  POSTER   Heterogeneous Chemistry of 
                    Single Alumina Particles in an 
                    Electrodynamic Trap: *A J Hunter, W T Rawlins, 
                    D B Oakes, D M Sonnenfroh
   1330h   A32B-03  POSTER   The Temperature-Dependent 
                    Deliquescence and Nucleation Behavior of 
                    Ammonium Sulfate Aerosol at Low Temperature: 
                    A Comparison Between Observations and Models: 
                    *J  Xu, D G Imre, R  McGraw
   1330h   A32B-04  POSTER   Direct Time Resolved Second 
                    Harmonic Generation Studies of the 
                    ClONO~K2~L Hydrolysis on Single Crystal Ice 
                    Surfaces Under Stratospheric Conditions: *F M 
                    Geiger, C D Pibel, J M Hicks
   1330h   A32B-05  POSTER   Nitric Acid Uptake and 
                    Decomposition on Black Carbon (Soot) 
                    Surfaces: Its Implications for the Upper 
                    Troposphere and Lower Stratosphere: *W  Choi, 
                    M T Leu
   1330h   A32B-06  POSTER   Seasonal Variability of 
                    Middle Latitude Ozone in the Lowermost 
                    Stratosphere and Upper Troposphere Based on 
                    Probability Distribution Functions: *M C 
                    Cerniglia, A R Douglass, R B Rood
   1330h   A32B-07  POSTER   Fast Chemical Generation of 
                    NO~Kx~  in the Tropical Free Troposphere: *M  
                    Schultz, D J Jacob, J D Bradshaw, R  Talbot, 
                    J  Dibb
   1330h   A32B-08  POSTER   New Atmospheric Sources of 
                    Nitric Oxide and Their Implications for the 
                    Atmospheric Effects of Aviation: *S S Prasad, 
                    E C Zipf



A32C   CC:210  Wed  1330h
Beginning the Future in Atmospheric Sciences II
Presiding: D R Worsnop, Aerodyne Research, Inc; J M Van Doren, 
           College of the Holy Cross

   1335h   A32C-01   Polar Sunrise Experiment 1997: 
                    Bromine Radicals and Photolysable Halogen 
                    Compounds Measurements: *C M Mihele, G A 
                    Impey, D R Hastie, P B Shepson, L A Barrie, 
                    K  Anlauf
   1350h   A32C-02   Model Simulation of Lightning 
                    Produced No~Kx~ in a Colorado Thunderstorm: 
                    *A J DeCaria, K E Pickering, J R Scala, G L 
                    Stenchikov
   1405h   A32C-03   Uptake of Gas-Phase Ammonia by 
                    Aqueous-Acid Solutions: *E  Swartz, Q  Shi, 
                    P  Davidovits, J T Jayne, D R Worsnop, C E 
                    Kolb
   1420h   A32C-04   The Role of Advective Fluxes in the 
                    Diurnal Cycle of Surface Air Temperature in 
                    the Great Plains: *S M Gray, G  Stenchikov, 
                    A  Robock, W  Chen
   1435h   A32C-05   A Single Column Chemical Transport 
                    Model for Regional Air Pollution Studies: *R  
                    Park, G  Stenchikov, K  Pickering, R  
                    Dickerson
   1450h   A32C-06   Assessing the Importance of the 
                    Evaporation-Wind Feedback Mechanism the 
                    Maintenance of Simulated Madden-Julian 
                    Oscillations: *E  Colon
   1505h   Break
   1525h   A32C-07   Aerosol Radiative Effects on 
                    Dynamical Mixing and Chemical Processes in 
                    the Planetary Boundary Layer: *M  
                    Gamazaychikov, G  Stenchikov, M  
                    Fox-Rabinovitz, R  Dickerson, K  Pickering
   1540h   A32C-08   Sensitivity of Convective Scheme in 
                    Data Assimilation: *L  Fleischfresser, A Y 
                    Hou
   1555h   Discussion



A32D   CC:202  Wed  1330h
Early Results from CRISTA Experiment
Presiding: M Riese, Univ of Wuppertal; J T Bacmeister, 
           Naval Research Lab

   1330h   A32D-01  INVITED   The CRISTA Experiments: An 
                    Overview: *K U Grossmann
   1345h   A32D-02  INVITED   MAHRSI Observations of High 
                    Latitude OH and Polar Mesospheric Clouds: *M H 
                    Stevens, R R Conway, M E Summers, J G Cardon
   1400h   A32D-03  INVITED   Comparison of Observed and 
                    Modeled Filaments in the CRISTA Data: *M R 
                    Schoeberl, J  Bacmeister, D  Offerman
   1415h   A32D-04   Streamers in Trace Gas Distributions 
                    as Measured by CRISTA and Modeled by KASIMA: 
                    D Offermann, *K U Grossmann, V Kuell, A 
                    Franzen, W Kouker
   1430h   A32D-05   Intercomparison of Satellite and 
                    Aircraft Observations of Long-Lived Tracers 
                    Using Trajectory Mapping: *J T Bacmeister, V  
                    Kuell, D  Offermann, J W Elkins
   1445h   A32D-06  INVITED   Global Modeling of 
                    Stratospheric Ozone: *X  Tie
   1500h   Break
   1530h   A32D-07  INVITED   Three-Dimensional Model 
                    Simulations of CRISTA Trace Gas Measurements: 
                    *M Riese, X X Tie, D Offermann, G Brasseur
   1545h   A32D-08  INVITED   "Postcasts" of Global 
                    Gravity Wave Activity in the Middle 
                    Atmosphere During the CRISTA-SPAS Missions: 
                    *S D Eckermann
   1600h   A32D-09  INVITED   Tidal Signatures in 
                    Temperature Data From the CRISTA 1 Mission 
                    (November 3-14 1994): *W E Ward, J  Oberheide, 
                    P  Preusse, M  Riese, D  Offermann
   1615h   A32D-10   Cloud Detection in the Upper 
                    Troposphere and Lower Stratosphere by CRISTA 
                    1/2: *R  Spang, P  Preusse, K U Grossmann, D  
                    Offermann, J  Bacmeister
   1630h   A32D-11   Measurements of CO~K2~L Density at 
                    the Turbopause by CRISTA: *M  Kaufmann, K  
                    Vollmann, K U Grossmann
   1645h   A32D-12   Particle Effects on the Middle 
                    Atmosphere Modeled Using the Parallelized 
                    TIME-GCM: *G Crowley, A Ridley, R Link, D 
                    Winningham, R Frahm, J Sharber, R Roble, A 
                    Richmond, J Russell



A41A   CC:HALL C  Thurs  0830h
Atmospheric Sciences Techniques Posters
Presiding: M J Elrod, Hope College

   0830h   A41A-01  POSTER   Aerosol Mass Spectrometer 
                    for Size and Composition Analysis of 
                    Submicron Particles: *J T Jayne, D R Worsnop, 
                    C E Kolb, D  Leard, P  Davidovits, X  Zhang, 
                    K A Smith
   0830h   A41A-02  POSTER   Experimental and Theoretical 
                    Studies of Chemical Ionization Mass 
                    Spectrometric Detection Schemes for 
                    Atmospherically Relevant Organic Peroxide, 
                    Hypochlorite, and Hypobromite Species: *M J 
                    Elrod, B M Messer, D E Stielstra
   0830h   A41A-03  POSTER   High Sensitivity, In-Situ 
                    Mass Spectrometric Studies of Atmospheric 
                    Chlorine, Sulphate and Nitric Acid: RISO, 
                    SNIF and SONEX: *R F Meads, J O Ballenthin, 
                    A A Viggiano, T M Miller, W F Thorn, D E 
                    Hunton, G S Federico, J F Borghetti, R B 
                    Gosselin, G R Kirpa
   0830h   A41A-04  POSTER   Prototype Holographic 
                    Atomospheric Scanner for Environmental 
                    Remote Sensing (PHASERS): *D Guerra, S 
                    Chaudhuri, G Schwemmer, T Wilkerson
   0830h   A41A-05  POSTER   Real Time Detection of 
                    Sodium in Aerosols by Laser Induced 
                    Fluorescence: *C D Clark, A J Hynes, E S 
                    Saltzman
   0830h   A41A-06  POSTER   Alternative Fluorocarbon 
                    Measurement Using Fluorine Atomic Emission 
                    Detector: *S R Sousa, S E Bialkowski
   0830h   A41A-07  POSTER   Stable Isotope 
                    Characterization of Atmospheric Volatile 
                    Organic Compounds (VOC) by 
                    Gas-Chromatography-Mass Spectrometry-Isotope 
                    Ratio Mass Spectrometry: A L Norman, J F 
                    Hopper, D E Ernst, E Czuba, *J Rudolph
   0830h   A41A-08  POSTER   Wind Measurement Using a 
                    Multibeam Lidar: *L C Chen, W E Eichinger
   0830h   A41A-09  POSTER   Tests of Sequential Data 
                    Assimilation for Profile Soil Moisture and 
                    Temperature Retrieval From L Band 
                    Radiobrightnesses: *J F Galantowicz, D  
                    Entekhabi
   0830h   A41A-10  POSTER   Integration of Soil Moisture 
                    Remote Sensing and Hydrologic Modeling Using 
                    Data Assimilation: *P R Houser, W 
                    Shuttleworth, J Famiglietti, H Gupta, K Syed, 
                    D Goodrich
   0830h   A41A-11  POSTER   On the Estimation of Soil 
                    Moisture Profile by Sequential Assimilation 
                    of Remotely Sensed Surface Soil Moisture: *J  
                    Li, S  Islam



A41B   CC:207  Thurs  0830h
Hydrological and Biochemical Controls on Atmosphere-Biosphere 
Exchange with Boreal Soils (joint  with H)
Presiding: N Roulet, McGill Univ; P Crill, Univ of New Hampshire

   0830h   A41B-01  INVITED   Carbon Balance of a Boreal 
                    Patterned Peatland: *J M Waddington, N T 
                    Roulet
   0845h   A41B-02   Environmental Controls on the Carbon 
                    Balance of Boreal Peatlands, Manitoba, Canada: 
                    *J L Bubier, P M Crill, S  Frolking, T R 
                    Moore
   0900h   A41B-03   Does Non-Growing Season Respiration 
                    Contribute Significantly to the Annual 
                    Carbon Budget of a Bog?: *C L Roehm, N T 
                    Roulet
   0915h   A41B-04   Influences of Fire and Climate 
                    Change on Carbon Emissions From Boreal 
                    Peatlands: *L A Morrissey, G P Livingston, 
                    S C Zoltai, W J deGroot
   0930h   A41B-05   Controls on Methane Emissions Along 
                    a Moisture Gradient Adjacent to a Beaver 
                    Pond in the Canadian Boreal Zone: *S C 
                    Moosavi, P M Crill
   0945h   A41B-06  INVITED   Trace Gas Exchange From 
                    Plot to Landscape Scale in a High Arctic Wet 
                    Tundra Ecosystem: *T R Christensen, T  
                    Friborg, H  Soegaard, C  Nordstroem, S  
                    Jonasson



A41C   CC:207  Thurs  1030h
Lightning and Electricity
Presiding: A R Jacobson, Los Alamos National Lab; R C Franz, 
           Los Alamos National Lab

   1030h   A41C-01   Coordinated FORTE Satellite RF and 
                    Ground-Based Sferic Lightning Observations: 
                    *A R Jacobson, S O Knox, R C Franz, D N 
                    Holden, R S Massey, C T Rhodes, M W Kirkland, 
                    D M Suszcynsky, D A Smith, X M Shao, K  Wiens
   1045h   A41C-02   FORTE/OLS Observations of Optical 
                    Emissions From Lightning and Other Transient 
                    Sources: M  Kirkland, *R  Franz, D M 
                    Suszcynsky, S  Knox, J  Guillen, J  Green
   1100h   A41C-03   Electomagnetics of Sprite Producing 
                    Lightning: *L H Marshall, L C Hale, C L 
                    Croskey
   1115h   A41C-04   Gamma-Ray Bursts Generated by 
                    Fractal Lightning: *G M Milikh, J A Valdivia
   1130h   A41C-05  INVITED   Tropical Lightning Activity 
                    Since 1971 Inferred From 10 kHz Radio Noise 
                    in Antarctica: *N W Watkins, M A Clilverd, 
                    A J Smith, K H Yearby
   1145h   A41C-06   Locating the Source of a TIPP Event: 
                    *R S Zuelsdorf, R J Strangeway, C T Russell, 
                    R C Franz, A R Jacobson



A41D   CC:202  Thurs  0830h
Atmospheric Effects of Aviation I
Presiding: R Kawa, NASA Goddard Space Flight Center; D E Anderson, 
           Johns Hopkins Univ

   0830h   A41D-01  INVITED   Effects of Subsonic 
                    Aircraft on Ozone: Insights From Aircraft 
                    Missions and Global Models: *D J Jacob, L 
                    Jaegle, M G Schultz, Y H Wang, W H Brune, Y 
                    Kondo, H Singh, R W Talbot
   0850h   A41D-02   HO~Kx~ Cycling and O~K3~ Production 
                    in the Upper Troposphere Based Upon In Situ 
                    Measurements: *E  Lanzendorf, T F Hanisco, 
                    P O Wennberg, J G Anderson, C R Webster, R D 
                    May, R  Herman, R S Gao, E R Keim, S G 
                    Donnelly, L A Del Negro, D W Fahey, M H 
                    Proffitt, J J Margitan, T P Bui
   0905h   A41D-03   The Production of HONO From the 
                    Heterogeneous Uptake of NO~K2~L on Soot: *C A 
                    Longfellow, A R Ravishankara, D R Hanson
   0920h   A41D-04  INVITED   An Overview of the 
                    AEAP/SONEX (Atmospheric Effects of Aviation 
                    Project/SASS Ozone and Nitrogen Oxide 
                    EXperiment) Aircraft Mission in 1997: *A M 
                    Thompson, H B Singh, X X SONEX Science Team
   0940h   A41D-05   Evaluation of Parameterized Deep 
                    Convection and Lightning in a Global 
                    Chemical Transport Model During SONEX: *K E 
                    Pickering, A M Thompson, L  Pfister, H B 
                    Selkirk, T L Kucsera
   0955h   Break
   1015h   A41D-06   CIMS Measurements of HNO~K3~L, 
                    SO~K2~L, and HCN During the NASA SONEX 
                    Campaign: *D E Hunton, J O Ballenthin, A A 
                    Viggiano, G R Kirpa, W F Thorn, T M Miller, 
                    J F Borghetti, G S Federico, R F Meads
   1030h   A41D-07   Whole Air Sampling From the DC-8 
                    Aircraft During SONEX: *I J Simpson, D R 
                    Blake, F S Rowland
   1045h   A41D-08   The Role of Chemi-Ions on Plume 
                    Ultrafine Particle Formation: Simulations 
                    and Comparisons With Recent Field 
                    Measurements: F  Yu, *R P Turco
   1100h   A41D-09   Measurements of SO~K2~L and HNO~K3~L 
                    in the Exhaust of an F-100 Jet Engine: J O 
                    Ballenthin, *T M Miller, A A Viggiano, D E 
                    Hunton, J F Borghetti, G S Federico, G R 
                    Kirpa, W F Thorn
   1115h   A41D-10   CIMS Measurements of SO~K2~L 
                    Emission Indexes in F-16 Exhaust as a 
                    Function of Fuel Sulfur Level: *J O 
                    Ballenthin, D E Hunton, T M Miller, G R Kirpa, 
                    R F Meads, J F Borghetti, G S Federico, W F 
                    Thorn, A A Viggiano
   1130h   A41D-11   Sulfur Content of Aircraft Fuel: 
                    Influence on Formation and Microphysical 
                    Properties of Contrails: *R  Busen, B  
                    Kaercher, A  Petzold, F P Schroeder, U  
                    Schumann



A41E   CC:101  Thurs  0830h
Biogeochemical Cycles and Air-Sea Exchange (joint  with OS)
Presiding: R Arimoto, New Mexico State Univ; M Conte, 
           Woods Hole Oceanogr Inst

   0830h   A41E-01   Oceanic Non-Methane Hydrocarbons: 
                    Concentrations, Production, and Emission 
                    Into the Atmosphere: *J  Rudolph, M  Ratte, 
                    O  Bujok
   0845h   A41E-02   An Analysis of a Global Model of 
                    Air-Sea Fluxes of Carbonyl Sulfide: *D  
                    Preiswerk, R Najjar
   0900h   A41E-03   Simulation of Atmospheric 
                    Oxygen/Nitrogen Ratio Using the GENESIS 
                    Atmospheric Transport Model: *P F Maloit, R G 
                    Najjar, D  Pollard
   0915h   A41E-04  INVITED   Continentally-Derived Lipid 
                    Biomarkers in the Atmosphere of the Western 
                    North Atlantic: *M H Conte, J C Weber
   0930h   A41E-05   Atmospheric Deposition of Polycyclic 
                    Aromatic Hydrocarbons Onto Casco Bay, Maine: 
                    D Golomb, E F Barry, *G F Fisher, S M 
                    McCormick, P Varanusupakul
   0945h   A41E-06  INVITED   Atmospheric Deposition of 
                    Trace Elements and Nitrogen to New Jersey 
                    Coastal Waters: *Y  Gao



A41F   CC:101  Thurs  1030h
Hydrometeorological Data Assimilation (joint  with H)
Presiding: D McLaughlin, MIT; D Entekhabi, MIT

   1030h   A41F-01   Challenges and Progress on the 
                    Characterization and Estimation of Global 
                    Land Surface Processes: *P R Houser, R Yang, 
                    A Molod, M Wu, J Joiner, S Cohn, A da Silva
   1045h   A41F-02   A Multiple Scale State-Space Model 
                    for Characterizing Subgrid Scale Variability 
                    of Near-Surface Soil Moisture: *P  Kumar
   1100h   A41F-03   Surface Temperature Assimilation in 
                    a Hydrological Model: *V Lakshmi, R Dubayah, 
                    J Rhoads, J Susskind
   1115h   A41F-04   Variational Assimilation of Soil 
                    Moisture and Surface Control on Evaporation 
                    Based on Thermal Infrared Remote Sensing: *F  
                    Castelli, D  Entekhabi, E  Caporali
   1130h   A41F-05   Using Data Assimilation to Infer 
                    Soil Moisture From Remotely-Sensed 
                    Observations: *D B McLaughlin, D  Entekhabi, 
                    R  Reichle, S J Luis
   1145h   A41F-06   Towards Profile Soil Moisture 
                    Retrieval From Remote Sensing: *J P Walker, 
                    G R Willgoose, J D Kalma



A42A   CC:HALL C  Thurs  1330h
Biogeochemical Cycles and Air-Sea Exchange Posters (joint 
 with O)
Presiding: R Arimoto, New Mexico State Univ

   1330h   A42A-01  POSTER   Determining the Composition 
                    of the Saharan Aerosol at Barbados, Bermuda, 
                    and Izana: *S  Huang, U  Tomza, R  Arimoto, 
                    K A Rahn, J M Prospero
   1330h   A42A-02  POSTER   Atmospheric Depositional 
                    Fluxes of Trace Elements to the Atlantic 
                    Ocean: *G  Kim, L Y Alleman, T M Church
   1330h   A42A-03  POSTER   Stable Lead Isotopes and 
                    Crustal Elements as Tracers of Atmospheric 
                    Sources to the North Atlantic: *L Y Alleman
   1330h   A42A-04  POSTER   Measured Vertical 
                    Distributions of Methyl Halides in the North 
                    Pacific Ocean: *W Huang, R H Gammon
   1330h   A42A-05  POSTER   A Suite of Ecodynamics 
                    Models for North Pacific Ocean 
                    Biogeochemistry: *S  Chu, L A McNair, S  
                    Elliott
   1330h   A42A-06  POSTER   Atmospheric Nitrogen in the 
                    Coastal Marine Environment of New England: 
                    *C E Jordan, R W Talbot, B W Mosher



A42B   CC:HALL C  Thurs  1300h
Summer 1997 Ozone Photochemistry Experiment Posters
Presiding: M A Carroll, Univ of Michigan; P S Shepson, 
           Purdue Univ

   1300h   A42B-01  POSTER   The Summer 1997 
                    Photochemistry Experiment: Site 
                    Characterization and Measurements of O3 and 
                    CO: L K Emmons, *T  Thornberry, K  Askwith, 
                    P  Samson, M A Carroll, J  Moody, O  Cooper, 
                    K  Higgins
   1300h   A42B-02  POSTER   The Summer 1997 
                    Photochemistry Experiment: Simultaneous 
                    Measurements of NO, NO2 and NOY: *T  
                    Thornberry, L K Emmons, S  Sillman, P  Samson, 
                    M A Carroll, J  Moody, O  Cooper, K  Higgins, 
                    S  Bertman, M  Pippin, K  Ostling, D  Hastie, 
                    C  Mihele, K  Fischer, A  Barron
   1300h   A42B-03  POSTER   Peroxyacyl Nitrates and NOx 
                    at the PROPHET Site During Summer 1997: *S  
                    Bertman, M  Pippin, K  Ostling, C  Seaver, 
                    M A Carroll, T  Thornberry, L  Emmons
   1300h   A42B-04  POSTER   Peroxy Radical Measurements 
                    During the PROPHET Summer '97 Measurement 
                    Campaign: *C M Mihele, D R Hastie, M A 
                    Carroll, S H Thomas, L K Emmons, T  
                    Thornberry, S  Bertman, M  Pippin, P B 
                    Shepson
   1300h   A42B-05  POSTER   Hydrogen Peroxide 
                    Measurements at PROPHET, Summer of 1997: *C S 
                    Claiborn
   1300h   A42B-06  POSTER   Observations of Rapid 
                    Nighttime Decay of Isoprene Above a Forest 
                    Canopy, as Part of the Program for Research 
                    on Oxidants: PHotochemistry, Emissions, and 
                    Transport (PROPHET) 1997 Intensives: *O  
                    Herrera-Gomez, B G Splawn, P B Shepson, D R 
                    Hastie, C  Mihele, M A Carroll, T  Thornberry, 
                    L K Emmons, S B Bertman, M  Pippin, H  
                    Westberg, T K Starn
   1300h   A42B-07  POSTER   Relaxed Eddy Accumulation 
                    Measurement of Biogenic Hydrocarbon Fluxes 
                    at the PROPHET Site During the Summer of 1997: 
                    *H  Westberg, B  Lamb, G  Allwine
   1300h   A42B-08  POSTER   Impact of Vertical Mixing on 
                    Surface Concentrations of Isoprene, 
                    Methacrolein, NOx, and Peroxides: Results 
                    From a 1-D Photochemical Model: *S  Sillman, 
                    M  Pippin, T  Thornberry, B  Lamb, H  
                    Westberg
   1300h   A42B-09  POSTER   Lidar Aerosol Profile 
                    Measurements During PROPHET Summer 1997 
                    Intensive: *K W Fischer, R T Feak, B L Dinda, 
                    A R Barron, K G Paterson, J Sagady
   1300h   A42B-10  INVITED  POSTER   Air Quality Data 
                    Exploration Using Positive Matrix 
                    Factorization: Results for the Summer 1997 
                    PROPHET Intensive: *J L Sagady, K G Paterson
   1300h   A42B-11  POSTER   Continuous Measurements of 
                    Ozone, CO, PAN, PPN, MPAN, and 
                    Meteorological Parameters at the PROPHET 
                    Site: A Preliminary Climatology: *S  Bertman, 
                    M  Pippin, K  Ostling, C  Seaver, M A Carroll, 
                    T  Thornberry, L  Emmons, J  Moody



A42C   CC:HALL C  Thurs  1330h
Water Vapor in the Upper Troposphere and Stratosphere Posters
Presiding: S Oltmans, NOAA/CMDL; E Hintsa, Harvard Univ

   1330h   A42C-01  POSTER   Diurnal and Seasonal 
                    Variability of Upper Tropospheric Water 
                    Vapor in the Tropical Pacific Using GMS-5 
                    and GOES-8 Imagery: *G I Molnar, D  Chesters
   1330h   A42C-02  POSTER   Evaluation of in Situ Water 
                    Vapor Measurements: In-Flight Calibrations, 
                    Intercomparisons, and the Hydrogen Budget: 
                    *E J Hintsa, E M Weinstock, J G Anderson, R D 
                    May
   1330h   A42C-03  POSTER   In Situ Sensing of 
                    Tropospheric Water Vapor Using an Airborne 
                    Near-IR Diode Laser Sensor: *D M Sonnenfroh, 
                    W J Kessler, M G Allen, J  Barrick
   1330h   A42C-04  POSTER   H~K2~L0 in the Lowermost 
                    Stratosphere: Seasonal and Regional 
                    Variability: *C Schiller, O Bujok, N Eicke, A 
                    Engel, H Fischer, P Konopka, D S McKenna, M 
                    Zoger
   1330h   A42C-05  POSTER   Rapid Lower Stratosphere 
                    Transport Inferred From High-Latitude 
                    In-Situ Water Vapor and CO Measurements: *E J 
                    Moyer, R D May, C R Webster, R L Herman, D C 
                    Scott, Y L Yung
   1330h   A42C-06  POSTER   Detection of Water Vapor 
                    Using a Zeeman-Split Emission Line From an 
                    Argon Discharge Lamp: *P L Kebabian, T A 
                    Berkoff, A  Freeman
   1330h   A42C-07  POSTER   Upper Troposphere Water 
                    Vapor and Climate Variabilities in the 
                    Equatorial Pacific: A Study Using ADEOS/IMG 
                    Observations: *J  Wang, J C Gille, H  Saji
   1330h   A42C-08  POSTER   Effect of Intensive Methane 
                    Release on the Earth's Mesosphere Conditions: 
                    *V M Khazins, V P Kudryavtsev, I V Nemtchinov, 
                    T I Orlova, L A Zhuravleva



A42D   CC:207  Thurs  1330h
Atmospheric Studies in the Mexico City Basin I
Presiding: J Fast, Pacific Northwest National Lab; G Raga, 
           Univ Nacional Autonoma de Mexico

   1330h   A42D-01   Project Azteca: An Overview: *G B 
                    Raga, D  Baumgardner, G  Kok, I  Rosas
   1345h   A42D-02   The Diurnal Evolution of the 
                    Polluted Boundary Layer in Mexico City: *G B 
                    Raga, D  Baumgardner, G  Kok
   1400h   A42D-03   The Structure and Evolution of the 
                    Boundary Layer in Mexico City: J C Doran, *J D 
                    Fast
   1415h   A42D-04   Meteorological and Dispersion 
                    Modeling Studies During the 1997 IMADA-AVER 
                    Field Experiment: *J D Fast, S  Zhong
   1430h   A42D-05   The Break-In of the Basin-Plain 
                    Circulation in the Mexico Basin: *C D 
                    Whiteman, S  Zhong, X  Bian



A42E   CC:207  Thurs  1505h
Atmospheric Studies in the Mexico City Basin II
Presiding: S Edgerton, Pacific Northwest Lab; D Baumgardner, NCAR

   1505h   A42E-01   Primary and Secondary Air Pollutants 
                    Over Mexico City: *G L Kok, D  Baumgardner, 
                    G  Raga
   1520h   A42E-02  INVITED   Measurements of Peroxyacyl 
                    Nitrates and Hydrocarbons in Mexico City: *J S 
                    Gaffney, N A Marley, P V Doskey
   1535h   A42E-03  INVITED   Particle Chemistry and 
                    Spatial Variability in Mexico City: *S  
                    Edgerton, J  Watson, J  Chow, M  Ruiz, E  
                    Ortiz, E  Vega
   1550h   A42E-04  INVITED   Size Resolved Carbonaceous 
                    Aerosols in Mexico City: *T  Novakov, G  Raga, 
                    D  Baumgardner, J  Ogren
   1605h   A42E-05   Microphysical Properties of Mexico 
                    City Aerosols: *D  Baumgardner, G  Raga, G  
                    Kok
   1620h   A42E-06   Radiative Properties of Mexico City 
                    Aerosols: J  Ogren, *D  Baumgardner, G  Raga, 
                    G  Kok
   1635h   A42E-07   Gas-Aerosol Equilibrium Formulation 
                    Model: *M  Moya-Nunez, F  Garcia-Sanchez, O  
                    Hernandez-Garduza, G  Sosa
   1650h   A42E-08   Simulations of Ammonium Salt Aerosol 
                    Distributations in the Valley of Mexico: *L A 
                    McNair, A G Russell, S M Elliott



A42F   CC:202  Thurs  1330h
Atmospheric Effects of Aviation II
Presiding: R Kawa, NASA Goddard Space Flight Center; D E Anderson, 
           Johns Hopkins Univ

   1330h   A42F-01  INVITED   Modelling the Impact of 
                    Aircraft Emission on Atmospheric Ozone: *I S 
                    Isaksen, T K Berntsen, F  Dentener, V  Grewe, 
                    D J Jacob, J F Muller, D  Stevenson
   1350h   A42F-02   The Impact on Radiative Forcing From 
                    Aircraft Emissions: *W C Wang, X Z Liang, I S 
                    Isaksen, T K Berntsen
   1405h   A42F-03   Present and Future Impact of 
                    Subsonic Aircraft Emissions on the 
                    Composition of the Troposphere: *D A 
                    Hauglustaine, G P Brasseur
   1420h   A42F-04   The Lifetime of Aircraft Emissions 
                    in the Stratosphere: *A  Gettelman
   1435h   A42F-05   Parameterization of the Convective 
                    Transport in a 2-D Chemistry-Transport Model 
                    and Its Validation With Radon 222 and Other 
                    Tracer Simulations: *V  Dvortsov, M A Geller, 
                    V  Yudin, S  Smyshlyaev
   1450h   A42F-06   Progress Towards a Three-Dimensional 
                    Aircraft Assessment Model: The Global 
                    Modeling Initiative: *J M Rodriguez, D  
                    Rotman
   1505h   Break
   1530h   A42F-07   The Impact of Aircraft Emission on 
                    the Stratosphere as Modelled by an 
                    Interactive Middle Atmosphere General 
                    Circulation Model: J de Grandpre, *D J 
                    Chartrand, J W Sandilands, S R Beagley, J C 
                    McConnell
   1545h   A42F-08   The Chemical Response to Aircraft 
                    Emissions as Modeled by the York University 
                    Chemistry Transport Model: *D J Chartrand, 
                    J C McConnell, E Templeton, J de Grandpre, S 
                    Beagley
   1600h   A42F-09   A Microphysical Analysis of the 
                    Sources of Nonvolcanic Stratospheric Sulfate 
                    Aerosol: *M J Mills, S  Solomon, O B Toon
   1615h   A42F-10   Temperature Cycling of Single 
                    Sulfuric Acid Particles in a Quadrupole Trap: 
                    *A J Hunter, D M Sonnenfroh, W T Rawlins
   1630h   A42F-11   A Generalized View of the 
                    Interrelationship Between the Abundances of 
                    Long-Lived Trace Species in the Stratosphere: 
                    *A E Dessler, D B Considine, E L Fleming, C H 
                    Jackman, M R Schoeberl
   1645h   A42F-12   Reactive Nitrogen Observations at 
                    High Latitudes in Summer: *L A Del Negro, D W 
                    Fahey, R S Gao, E R Keim, S G Donnelly, J A 
                    Neuman, M H Proffitt, J J Margitan, R C Cohen, 
                    K K Perkins, L C Koch, M  Loewenstein, J C 
                    Grecu, J C Wilson, C A Brock, T P Van Bui, 
                    P A Newman, L R Lait, R J Salawitch, M K Ko



A51A   CC:HALL C  Fri  0830h
The Role of Vegetation in Biosphere-Atmosphere Interactions 
Posters (joint  with H)
Presiding: E Eltahir, MIT

   0830h   A51A-01  POSTER   Using Ambient Concentrations 
                    as Proxy for Methane Flux Measurements From 
                    Rice Fields: *M A K Khalil, R A Rasmussen
   0830h   A51A-02  POSTER   Methyl Bromide and Methyl 
                    Chloride Are Both Produced and Consumed by 
                    the Terrestrial Biosphere: *R C Rhew, B R 
                    Miller, R F Weiss
   0830h   A51A-03  POSTER   Differences in Oxidation and 
                    Pathways of Production Between Rice 
                    Cultivars Deduced From Measurements of 
                    CH~K4~L Flux, and delta~K13~LC of CH~K4~L 
                    and CO~K2~L: *R S Bilek, S C Tyler, R L Sass, 
                    F M Fisher
   0830h   A51A-04  POSTER   Quantification of Carboxylic 
                    Acids, Carbonyls, and Hydrocarbons Directly 
                    Emitted From Ponderosa Pine and Cottonwood 
                    Trees in Central New Mexico: *L Villanueva, 
                    C J Popp, R S Martin, J Knowlton
   0830h   A51A-05  INVITED  POSTER   Measuring the 
                    Effect of CO2 Fertilization on Soil Organic 
                    Material Beneath Loblolly Pines (Pinus Taeda): 
                    *M A Grunauer, K G Harrison, A L Kafka, D T 
                    Tissue, R B Thomas
   0830h   A51A-06  POSTER   Measuring the Effects of 
                    Elevated Temperatures and CO2 Levels on CO2 
                    Fertilization in Soil From Maple Trees: *T L 
                    Hensel, K G Harrison, A L Kafka, R J Norby
   0830h   A51A-07  POSTER   Nitric Acid and Ammonia at a 
                    Rural Northeastern U.S. Site: *B L Lefer, R W 
                    Talbot, J W Munger
   0830h   A51A-08  POSTER   Carbon Fluxes in an Eroding 
                    Agricultural Watershed: *T G Huntington, S M 
                    Dabney, J M Sharpe, J W Harden, T L Fries



A51B   CC:HALL C  Fri  0830h
Hydrological and Biochemical Controls on Atmosphere-Biosphere 
Exchange with Boreal Soils Posters (joint  with H)
Presiding: N Roulet, McGill Univ

   0830h   A51B-01  POSTER   Transplanting Peat Samples 
                    Among Boreal Wetlands Reveals Biogeochemical 
                    Control of Methane Cycling: *J B Yavitt
   0830h   A51B-02  POSTER   Visualization and 
                    Quantification of Gas Bubbles Observed in 
                    Situ in Peat Cores Using MR and CT Scans: *P J 
                    Morin, P H Glaser, J J Kamp, N  Tsekos, J S 
                    Rivers, D I Siegel
   0830h   A51B-03  POSTER   Measuring Biogenic-Gas 
                    Bubbles in Peat Cores by Magnetic Resonance 
                    Imaging: *P H Glaser, P J Morin, J J Kamp, N  
                    Tsekos, D I Siegel
   0830h   A51B-04  POSTER   Methane Emission and 
                    Production From Wetlands as Influenced by 
                    Water Table: A Process-Based Model: *X  
                    Shangguan, Z  Yu, D  Pollard, E J Barron
   0830h   A51B-05  POSTER   Modeling Methane Flux From 
                    Boreal Peatlands: M G Letts, *N T Roulet, D  
                    Verseghy
   0830h   A51B-06  POSTER   Beaver Ponds: A Mechanism to 
                    Return Soil Carbon to the Atmosphere: *N T 
                    Roulet



A51C   CC:310  Fri  0830h
Pre-Quaternary Paleoclimate Model-Data Discrepancies: 
Potential for Reconciliation (joint  with OS)
Presiding: K Bice, Penn State Univ; M Gibbs, 
           Univ of Wisconsin-Madison

   0830h   A51C-01  INVITED   Paleoclimate Model-Data 
                    Intercomparison: An Overview: *E J Barron
   0845h   A51C-02   Pliocene Climate Simulations: The 
                    Effect of Improved Paleogeographic 
                    Reconstructions: *M  Chandler, J  Barron, H  
                    Dowsett, R  Poore, R  Thompson
   0900h   A51C-03  INVITED   Evaluating GCM Simulations 
                    for the Early Eocene: Cold Continental 
                    Interiors, Real or in the Models?: P  
                    Markwick, B  Sellwood, P  Valdes
   0915h   A51C-04  INVITED   How Reliable Are 
                    Palaeoclimate GCMs for Pre-Quaternary 
                    Climates?: *P J Valdes, B W Sellwood, P J 
                    Markwick
   0930h   A51C-05  INVITED   The Impact of Uncertainty 
                    in Seawater Composition on Isotopic 
                    Paleotemperatures: Use of Model-Derived delW?: 
                    *K L Bice
   0945h   A51C-06  INVITED   Primary Productivity 
                    Modeling: A Tool for Integrating Climate 
                    Model Output and Geologic Climate Proxies: 
                    *G R Upchurch, B H Lomax, D J Beerling, B L 
                    Otto-Bliesner
   1000h   Break
   1030h   A51C-07  INVITED   Permian and Jurassic 
                    Climates: Strengths and Limitations of the 
                    Fossil Plant Data: *P M Rees, A M Ziegler
   1045h   A51C-08   Permian Paleoclimate Data/Model 
                    Agreements and Discrepancies: *M T Gibbs, J E 
                    Kutzbach, A M Ziegler, P M Rees
   1100h   A51C-09  INVITED   Warm Polar Currents: *A M 
                    Ziegler
   1115h   A51C-10   Snowball Earth and Neoproterozoic 
                    Stratigraphy: *P F Hoffman, G P Halverson, 
                    A J Kaufman, G Soffer
   1130h   A51C-11  INVITED   The Phanerozoic History of 
                    Seawater Oxygen Isotope Composition: M A 
                    Arthur, *L R Kump
   1145h   A51C-12  INVITED   Geometric Control Over the 
                    Global Ocean Thermohaline Circulation and 
                    Paleocirculation: *D  Seidov, K  Bice, D  
                    Pollard, C  Poulsen



A51D   CC:207  Fri  0830h
Water Vapor in the Upper Troposphere and Stratospere I
Presiding: S Oltmans, NOAA/CMDL; E Hintsa, Harvard Univ

   0830h   A51D-01  INVITED   Increases in Middle 
                    Atmospheric Water Vapor From 1991-1998: *G E 
                    Nedoluha, R M Bevilacqua, R M Gomez, D E 
                    Siskind, B C Hicks, J M Russell, B J Connor
   0845h   A51D-02  INVITED   Water Vapor Trends in the 
                    Lower Stratosphere: *K H Rosenlof, A F Tuck, 
                    K K Kelly, S J Oltmans, H  Vomel, J M Russell, 
                    M P McCormick, R D May
   0900h   A51D-03   Intercomparison of Stratospheric 
                    Water Vapor Climatologies Derived From 
                    Multi-Year Satellite Data Sets: *M P 
                    McCormick, E W Chiou
   0915h   A51D-04  INVITED   Seasonal Variations of 
                    Water Vapor in the Middleworld From 
                    Satellite Data: L Pan, W Randel, F Wu
   0930h   A51D-05  INVITED   UARS MLS Upper Tropospheric 
                    Water Vapor Measurements: *W G Read, E M 
                    Stone, J W Waters
   0945h   A51D-06   Seasonal Behavior of Low to 
                    Mid-Latitude Upper Tropospheric Water Vapor 
                    From UARS MLS: *B J Sandor, W G Read, J W 
                    Waters, K H Rosenlof
   1000h   Break
   1030h   A51D-07  INVITED   Evaluation of the Seasonal 
                    Cycle of Water Vapor in the Stratosphere 
                    From Monthly Average Tropical Tropopause 
                    Temperatures Using a CO Photochemical Clock: 
                    *E M Weinstock, E J Hintsa, J G Anderson, K A 
                    Boering, B C Daube, S C Wofsy, R L Herman, 
                    R D May, C R Webster, T P Bui
   1045h   A51D-08  INVITED   Airborne Lidar Measurements 
                    of Tropospheric Water Vapor Distributions: 
                    *E V Browell, S  Ismail
   1100h   A51D-09   FIRS-2 Observations of 
                    H~K2~L~L16~KO, H~K2~L~L18~KO, and HDO: 
                    Constraints on the Stratospheric Dehydration 
                    Mechanism: *D G Johnson, K W Jucks, W A Traub, 
                    K V Chance
   1115h   A51D-10   The Cold Point Tropopause and 
                    Stratospheric Water Vapor: *M A Geller, X L 
                    Zhou
   1130h   A51D-11   Stratospheric Water Vapor Over 
                    Boulder, Colorado: 1981-1997: *S J Oltmans, 
                    H  Vomel, D J Hofmann
   1145h   A51D-12   Water Vapor in the Tropical Lower 
                    Stratosphere: Tropopause Freeze-Drying 
                    Revisited: *G C Reid



A52A   CC:207  Fri  1330h
Water Vapor in the Upper Troposphere and Stratosphere II
Presiding: S Oltmans, NOAA/CMDL; E Hintsa, Harvard Univ

   1330h   A52A-01   Observations of Thin Cirrus Clouds 
                    Near the Tropical Tropopause by Instrumented 
                    Aircraft: *L  Pfister, H B Selkirk, E  
                    Browell, M R Schoeberl, T P Bui, B  Gary, E  
                    Hintsa
   1345h   A52A-02   Two-Dimensional Modeling Studies of 
                    Upper Tropospheric and Stratospheric Water 
                    Vapor: *J E Rosenfield, D B Considine, M R 
                    Schoeberl
   1400h   A52A-03   Interannual Variabilities of Lower 
                    Stratospheric Water Vapor: *X L Zhou, M A 
                    Geller
   1415h   A52A-04   Spatial and Temporal Variability in 
                    Measurements of MLS Upper Tropospheric Water 
                    Vapor: *E M Stone, W G Read, J W Waters
   1430h   A52A-05   Variability of Water Vapor in the 
                    Tropical Upper Troposphere As Measured by 
                    the Microwave Limb Sounder on UARS: *H L 
                    Clark, R S Harwood, P W Mote, W G Read
   1445h   A52A-06   The Influence of ENSO on the Upper 
                    Tropospheric Water Vapor in the Mid-Latitudes: 
                    *R  Fu



A52B   CC:207  Fri  1530h
Aerosols, Clouds and Radiative Processes
Presiding: K D Beyer, Wisconsin Lutheran College; C S Long, 
           NOAA National Weather Service

   1530h   A52B-01   Ozone and Surface UltraViolet (UV) 
                    Radiation From Ground Measurements: Analysis 
                    of Data From the EPA Brewer Network in the 
                    United States: *P M Udelhofen, J E Rives, R S 
                    Meltzer, W  Mou
   1545h   A52B-02   Using the UV Index to Intercompare 
                    Surface UV Observations: *C S Long
   1600h   A52B-03   UV Refractive Indices and Absorption 
                    Cross Sections of Aqueous Ammonium Sulfate 
                    Solutions: *K D Beyer, D D Ebeling
   1615h   A52B-04   Validation of CCM2/CCM3CRM and 
                    MODTRAN3 With ARM Data: *Y P Zhou, R D Cess
   1630h   A52B-05   Delta-Eddington's Approximation for 
                    Three-Dimensional Radiative Transfer in the 
                    Atmosphere: *Z Qu, J E Frederick
   1645h   A52B-06   Results of the Intercomparison 
                    Between a US Department of Agriculture UV 
                    Multi-filter Rotating Shadowband 
                    Radiometer(UV-MFRSR) and an Environmental 
                    Protection Agency Brewer Spectroradiometer 
                    Co-located at Boulder, Colorado: *J E 
                    Estupinan, J R Slusser, W  Mou, T  Taylor, 
                    R S Meltzer, J E Rives, D S Bigelow, J H 
                    Gibson



A52C   CC:310  Fri  1330h
The Role of Vegetation in Biosphere-Atmosphere Interactions
 (joint  with H)
Presiding: E Eltahir, MIT; J A Foley, Univ of Wisconsin

   1330h   A52C-01   Linking Seasonality of Vegetation 
                    Properties in a Climate Model to Carbon and 
                    Nitrogen Cycling: *R E Dickinson, M J Shaikh
   1345h   A52C-02   Modeling Springtime Vegetation 
                    Green-Up in a Mesoscale Meteorology Model: 
                    *J E Pleim, L  Ran, E J Cooter
   1400h   A52C-03   Development of a 2-D Zonally 
                    Symmetric Model to Study 
                    Biosphere-Atmosphere Interactions: *G  Wang, 
                    E A Eltahir
   1415h   A52C-04   BIOME3 and BIOME1 Simulations of 
                    North American Vegetation at 6 rka: 
                    Validation Against Pollen Data: *J W Williams, 
                    P J Bartlein, T Webb, P J H Richard
   1430h   A52C-05   Exchange of Carbon Dioxide Between 
                    the Terrestrial Biosphere and Atmosphere in 
                    the 1990s: Consistence of Model Results With 
                    Isotope Measurements: *H  Tian, J M Melillo, 
                    D W Kicklighter, J  Helfrich, A D McGuire
   1445h   Break
   1515h   A52C-06   A Test of the Canadian Land Surface 
                    Scheme (CLASS) for a Variety of Wetland Types: 
                    *N T Comer, P M Lafleur, N T Roulet, M  Letts, 
                    M  Skarupa, D  Verseghy
   1530h   A52C-07   Footprint Estimation of Scalar 
                    Fluxes Over Homogeneous Surfaces: *C I Hsieh, 
                    G G Katul
   1545h   A52C-08   Modeling the Momentum and Scalar 
                    Sources, Sinks, and Fluxes Within and Above 
                    a Uniform Forest: *G G Katul
   1600h   A52C-09   Evaporation From Spatially Variable 
                    Forest Canopies: *J D Albertson
   1615h   A52C-10   Deforestation and Clouds Pattern 
                    Over Rondonia: *J  Wang, R  Bras, E  Eltahir
   1630h   A52C-11   Evapotranspiration Time Scales of 
                    Land Surface Schemes: *D Lohmann, E F Wood


 

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