SCIENTIFIC PROGRAM
Water Vapor in the Climate System

October 12 - 15, 1999 Potomac, Maryland

Conveners:
Dian Gaffen, NOAA Air Resources Laboratory,
John Gille, NCAR
Rebecca Ross, NOAA Air Resources Laboratory

MONDAY, OCTOBER 11, 1999

3:00pm             Check-in begins for overnight guests

5:00-8:00pm     Dinner in the Community Dining Room (inclusive for overnight guests)

6:00-8:00pm     Early Registration

TUESDAY, OCTOBER 12, 1999

8:30-8:40am     Welcome and Introductory Remarks

SESSION I: WATER VAPOR OBSERVING SYSTEMS I: IN-SITU, GROUND-BASED, AIR-BORNE METHODS

Chair: D Randel


8:40-9:00am C Schiller Invited - Techniques for Measurement of Water Vapor in the Upper Troposphere/Lower Stratosphere From Aircraft, Balloons, and Ground Stations

9:00-9:20am H L Cole, D B Parsons Invited - Radiosonde Water Vapor Measurements in the Troposphere (Including Problems)

9:20-9:40am F J Schmidlin An Inexpensive Radiosonde Chilled Mirror Sensor: An Old Technology With New Impact

9:40-10:00am R J Fleming Invited - Water Vapor Measurements From Commercial Aircraft: Progress and Plans

10:00am     REFRESHMENT BREAK

SESSION II: TROPOSHERIC WATER VAPOR I: WATER VAPOR COMPONENTS OF INTERNATIONAL RESEARCH PROGRAMS

Chair: R Ross


10:40-11:00am T H Vonder Haar Invited - Scientific Objectives of the Global Water Vapor Project

11:00-11:20am A Chedin Invited - A Climatic view of the NOAA-TOVS Archive (Path-B)

11:20-11:40am J Roads, R Lawford Invited - The Role of Water Vapor in GCIP Water Budget Studies

11:40am- 12:00pm H Revercomb What has Been Leaned About Water Vapor From the ARM Program

12:00-1:30pm     LUNCH - Community Dining Room (Inclusive to all attendees)

SESSION III: WATER VAPOR IN THE UPPER TROPOSPHERE/LOWER STRATOSPHERE I

Chair: A Dessler


1:30-1:50pm D Kley, J M Russell III  Invited - Water Vapor Assessment (WAVAS): A SPARC Initiative

1:50-2:20pm K H Rosenlof Invited - Stratospheric Transport Inferred From Observations of Water Vapor

2:20-2:50pm B A Boville Invited - Modeling Water Vapor in General Circulation Models

2:50-3:10pm S Pawson, S-J Lin, S Nebuda, F Verter, R B Rood Simulations of Water Vapor in the Upper Troposphere and Lower Stratosphere

3:10-3:40pm     REFRESHMENT BREAK

SESSION IV: SPECIAL INTEREST AND POSTER INTRODUCTION

Chair: S Tjemkes


3:40-3:50pm R Rosen Brief Report of the NRC GEWEX Panel on GvaP Science and Implementation Plans

3:50-4:00pm R Avissar Guidelines for a Special Section in JGR- Atmospheres

4:00-4:30pm     Poster Presenters - One-minute Introduction

5:00-7:00pm     DINNER (Inclusive to all Overnight Guests and Day Guests who purchased an advance ticket)

7:00-9:00pm     POSTER SESSION and RECEPTION (Inclusive to all attendees)

POSTER PRESENTATIONS (Listed Alphabetically by First Author)
 
C B Blankenship, T T Wilheit  Passive Microwave Observations of Water Vapor Profiles During ENSO Events

S Bony, J-Ph Duvel, H Le Treut Water Vapor and Clear-sky Greenhouse Effect Sensitivity to SST Changes: Intercomparison of Climate Models (AMIP)

J S Boyle Comparison of Water Vapor Distribution in NCAR Climate System Model, CCM3 AMIP Simulations and Observations

J Cohen, D A Salstein, R D Rosen Interannual Variability and Trends in the Meridional Flux of Water Vapor

B Demoz, D Whiteman, K Evans, D Starr  The Goddard Scanning Raman Lidar: Water Vapor Mixing Ratio Measurements During the Convection and Moisture Experiment (CAMEX - III)

C Escoffier, J Bates, A Chedin, J Schmetz Comparisons of Upper Tropospheric Water Vapor Retrievals From TOVS and METEOSAT

P Ya Groisman, B-M Sun The Relationship of Cloud Cover to Near- surface Temperature and Humidity: Climatology, Temporal Variations, Comparison of GCM Simulations With Empirical Data

A Hall, S Manabe,  Modeling Study of the Role of Water Vapor Feedback in Unperturbed Climate Variability and Global Warming

J E Harries, P J Sagoo  Analysis of IMG Spectra and Water Vapour Variability in the Atmosphere

G J Jedlovec, J A Lerner, H Iwai, S Haines Satellite-derived Water Vapor Winds for Regional Climate Studies

H Kanamaru, G D Salvucci, D Entekhabi, J Wang, R L Bras The Mean Annual Cycle of Water and Energy Budgets of the Atmosphere Over the Mississippi River Basin

S Kernthaler, J D Haigh Identifying Spectral Signatures Sensitivite to Water Vapour Continuum Paramemters Using Principal Component Analysis

J R Lawrence, S D Gezelman  Recycling of Water Vapor in the Troposphere by Tropical Cyclones and Mesoscale Convective Complexes as Revealed by Stable Isotope Analyses

B S Levy, F Bernal, K L Brubaker, P Dirmeyer, A Sudradjat A 15-year Climatology of Precipitation Source Regions for the Mississippi Basin Using Back-trajectory Modeling

Z Lu, T P DeFelice, D Meyer On the Mapping of Columnar Water Vapor Using Radar Interferometry

Q Ma, R H Tipping The Density Matrix of the Water-Nitrogen System in the Coordinate Representation: A Monte Carlo Calculation of the Far-Wing Line Shapes

L Pfister, G Sachse, H B Selkirk Comparison of Convective and Temperature Histories with Aircraft-observed Water Vapor

D L Randel Can our Current Observing Systems Identify an Acceleration of the Earth's Hydrologic Cycle?

D L Randel, T H Vonder Haar, R J Engelen  Intercomparison of the Global Upper Tropospheric Water Vapor Retrievals From TOVS

R J Ross, J X L Wang Multi-year Variability of Tropospheric Water Vapor

S R Schroeder Satellite-Derived Atmospheric Water Vapor Since 1979

C A Smith, J D Haigh, R Toumi Trends in Stratospheric Water Vapour Derived From UARS HALOE and Their Radiative Effects Simulated Using a 2D Model

A Sudradjat, F Bernal, K L Brubaker, P A Dirmeyer, B S Levy Analysis of Sensitivity to ET Errors in Model-Derived Precipitation Source Regions and Recycling Estimates

A G Wozniak, F J Schmidlin The Modification of the Water Vapor Profile During the Passage of a Tropical System

V Wulfmeyer Water Vapor Differential Absorption Lidar: A Reference Standard for Water Vapor Profiling in the Atmosphere

I Yagai, T Kayahara, K Ichiyagagi On the Global Water Budget From the Diurnal to the Seasonal Variations by using ECMWF Re-analysis Data and a GCM Simulation

C-Z Zou, M L Van Woert Satellite Estimations of Poleward Moisture Flux and Its Trend Over the Southern Oceans

WEDNESDAY, OCTOBER 13, 1999

SESSION V: WATER VAPOR IN THE GLOBAL HYDROLOGIC CYCLE

Chair: D Williamson


8:30-9:00am K E Trenberth Invited - Potential Changes in the Global Hydrological Cycle

9:00-9:20am A Hall, S Manabe The Effect of Water Vapor Feedback on Internal and Anthropogenic Variations of the Global Hydrologic Cycle

9:20-9:40am B-M Sun, P Ya Groisman Rainfall and Convective Cloudiness Changes as Indicators of Intensification of the Hydrological Cycle

9:40-10:00am B J Soden How Well Can We Monitor and Predict an Intensification of the Hydrological Cycle? A Test Using ENSO

10:00-10:15am    OPEN DISCUSSION

10:15-10:50am    REFRESHMENT BREAK

SESSION VI: RADIATIVE ROLE OF WATER VAPOR

Chair: J Russell


10:50-11:10am J G Cormier, J R Drummond Sizing Up The Continuum: The State of Water Vapour Continuum Absorption Measurements

11:10-11:30am J E Harries, H Brindley, A Slingo Spectral Signatures of Climate Change and Radiative Cooling by Water Vapour

11:30-11:50am H E Brindley, C Naud, J E Harries High Resolution Simulations of the Impact of Water Vapour and Cirrus Clouds on Greenhouse Trapping and Heating Rates Within the Far-infrared

11:50am- 12:00pm R Lawford U.S. Initiative on Water Cycle

12:00-1:30pm     LUNCH - Community Dining Room (Inclusive to all attendees)

SESSION VII: WATER VAPOR OBSERVING SYSTEMS II: SPACE-BORNE METHODS

Chair: J Bates


11:50am- 12:00pm E E Remsberg Invited - Water Vapor in the Upper Troposphere/Lower Strato-sphere (UT/LS) From Satellite Instruments

1:50-2:10pm S Businger Invited - Progress in GPS Meteorology 

2:10-2:30pm A N Maurellis, R Lang, W J van der Zande, I Aben, W Ubachs Precipitable Water Column Retrieval From GOME Data

2:30-2:50pm H G J Smit, D Kley, M Helten Invited - Upper Tropospheric Water Vapor Measurements From the MOZAIC-Program: Seasonal Cycle of the Large Scale Humidity Distribution Over the Atlantic Ocean

2:50-3:10pm S A Tjemkes, M Koenig, H-J Lutz, J Schmetz On the Calibration of Meteosat Observations Using Independent Satellite Observations: I. Water Vapour Channel

3:10-3:40pm     REFRESHMENT BREAK

SESSION VIII: PROCESSES AFFECTING UPPER-TROPOSPHERIC WATER VAPOR

Chair: B Soden


3:40-4:00pm J J Bates Observation and Modeling of Upper Tropospheric Water Vapor 1979-1998

4:00-4:20pm R Fu, H Wang Influences of ENSO SST Anomalies and Winter Storm-Tracks on the Interannual Variability of Upper Troposphere Water Vapor 

4:20-4:40pm E J Jense, L Pfister, A S Ackerman  Simulations of Water Vapor "Pumping" by Detached Cirrus Layers Using a Fully Interactive Microphysical/Dynamical/Radiative Model

4:40-5:00pm M H Zhang, M A Geller, W Y Lin Invited - Water Vapor in the Subtropical Upper Troposphere and Its Climate Feedback: A Mechanistic Modeling Study of Controlling Factors

5:00-8:00pm     DINNER (Inclusive for Overnight Guests)

THURSDAY, OCTOBER 14, 1999

SESSION IX: WATER VAPOR FEEDBACKS

Chair: R Fu


8:30-9:00am S A Clough Invited - The Role of Water Vapor in the Earth's Radiation Budget

9:00-9:20am K A Emanuel Invited - A Quantitative Assessment of the Water Vapor Feedback in the Climate System

9:20-9:40am A Arking Absorption of Solar Radiation in the Atmosphere and Water Vapor Feedback

9:40-10:00am R S Lindzen, M-D Chou, A Y Hou, A DaSilva, J Joiner Direct Measurement of Cloud/Water Vapor Feedback

10:00-10:15am    OPEN DISCUSSION

10:15-10:40am    REFRESHMENT BREAK

SESSION X: WATER VAPOR OBSERVING SYSTEMS III: RESULTS FROM FIELD EXPERIMENTS

Chair: S Businger


10:40-11:00am A H Dodson, H C Baker, N T Penna The WAVEFRONT Project on GPS Water Vapour - Long Term Estimation Issues

11:00-11:20am G Elgered, J M Johansson, B Stoew Continuous Time Series of Water Vapor Estimates for the BRIDGE Experiment Using Ground-Based GPS Networks

11:20-11:40am E V Browell, S Ismail, R A Ferrare Airborne Lidar Measurements of Water Vapor, Aerosol, and Cloud Distributions for Climate Studies

11:40am- 12:00pm P Di Girolamo, P F Ambrico, A Amodeo, A Boselli, V Cuomo, G Pappalardo, M Pandolfi, N Spinelli Water Vapor and Aerosol Measurements by Ground-based Lidar in the Nocturnal Boundary Layer

12:00-1:30pm     LUNCH - Community Dining Room (Inclusive to all attendees)

SESSION XI: WATER VAPOR IN THE UPPER TROPOSPHERE/LOWER STRATOSPHERE II

Chair: J Gille


1:30-1:50pm J P McCormack, R Fu UARS MLS Observations of Cross-Tropopause Water Vapor Transport During Northern Hemisphere Winter

1:50-2:10pm A Gettelman, A R Douglass, J R Holton  Simulated Transport of Water Vapor in the Upper Troposphere and Lower Stratosphere

2:10-2:30pm S C Sherwood, A E Dessler  A Model for Troposphere-Stratosphere Exchange in the Tropics

2:30-2:50pm D G Johnson, K W Jucks, W A Traub, K V Chance  Isotopic Composition and Interannual Variability of Stratospheric Water Vapor: Implications for Meridional Transport and Troposphere-Stratosphere Exchange

2:50-3:10pm     DISCUSSION

3:10-3:30pm     REFRESHMENT BREAK

3:30-5:00pm     BREAK FOR LEISURE TIME

5:00-8:00pm     DINNER (Inclusive for Overnight Guests)

FRIDAY, OCTOBER 15, 1999

SESSION XII: TROPOSPHERIC WATER VAPOR II: WATER VAPOR VARIABILITY AND TRENDS

Chair: R Lawford


8:30-9:00am L G Thompson Water Vapor and Climate Change: A Tropical Ice Core Perspective

9:00-9:20am D J Gaffen Trends in Lower-Tropospheric Water Vapor

9:20-9:40am M Schabel, F Wentz Seasonal and Interannual Variability in Decadal Time Series of SSM/I Satellite Retrieved Precipitable Water

9:40-10:00am S R Schroeder Trends and Accuracy of Global Total Precipitable Water From Radiosondes Since 1973

10:00-10:30am    REFRESHMENT BREAK

SESSION XIII: WATER VAPOR IN THE TROPOSPHERE/LOWER STRATOSPHERE III

Chair: K Rosenlof


10:30-10:50am J C Gille, A Lambert, L V Lyjak Global Stratosphere-Troposphere Exchange of Water Vapor Derived From Simulated HIRDLS Observations

10:50-11:20am A F Tuck, S J Hovde, K K Kelly, E C Richard Invited - Power Law Scaling of Water Vapor and Total Water Observations From the ER-2 and WB57F High Altitude Research Aircraft

11:20-11:40am E C Richard, M H Proffitt, K K Kelly, A F Tuck, M J Mahoney Total Water Measurements From the WB-57F: A Case Study of Mixing Across the Subtropical Jetstream

11:40am- 12:10pm G Brasseur Water Vapor in Atmospheric Chemistry

12:10-1:30pm     LUNCH - Community Dining Room (Inclusive to all attendees)

1:30pm               CONFERENCE ADJOURNS