AGU Index terms mapping, 1 January 2005


See Browseable Index Terms list
  1995   2005  
0300 ATMOSPHERIC COMPOSITION AND STRUCTURE 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE unchanged
0305 Aerosols and particles (0345, 4801) 0305 Aerosols and particles (0345, 4801, 4906) unchanged, added xr
0310 Airglow and aurora 0310 Airglow and aurora unchanged
0312 Air/sea constituent fluxes (3339, 4504) 0312 Air/sea constituent fluxes (3339, 4504) unchanged
0315 Biosphere/atmosphere interactions (0426) 0315 Biosphere/atmosphere interactions (0426, 1610) unchanged, added xr
0317 Chemical kinetic and photochemical properties 0317 Chemical kinetic and photochemical properties unchanged
0320 Cloud physics and chemistry 0320 Cloud physics and chemistry unchanged
    0319 Cloud optics new
    0321 Cloud/radiation interaction new
0322 Constituent sources and sinks 0322 Constituent sources and sinks unchanged
0325 Evolution of the atmosphere 0325 Evolution of the atmosphere (1610, 8125) unchanged, added xr
    0328 Exosphere new
0330 Geochemical cycles 0330 Geochemical cycles (1030) unchanged, added xr
0335 Ion chemistry of the atmosphere (2419, 2427) 0335 Ion chemistry of the atmosphere (2419, 2427) unchanged
0340 Middle atmosphere: composition and chemistry 0340 Middle atmosphere: composition and chemistry unchanged
0341 Middle atmosphere: constituent transport and chemistry (3334) 0341 Middle atmosphere: constituent transport and chemistry (3334) unchanged
0342 Middle atmosphere: energy deposition 0342 Middle atmosphere: energy deposition (3334) unchanged, added xr
0343 Planetary atmospheres (5405, 5407, 5409, 5704, 5705, 5707) 0343 Planetary atmospheres (5210, 5405, 5704) unchanged, added xr
0345 Pollution--urban and regional (0305) 0345 Pollution: urban and regional (0305, 0478, 4251) unchanged, added xr
0350 Pressure, density, and temperature 0350 Pressure, density, and temperature unchanged
0355 Thermosphere--composition and chemistry 0355 Thermosphere: composition and chemistry unchanged
0358 Thermosphere--energy deposition 0358 Thermosphere: energy deposition (3369) unchanged, added xr
0360 Transmission and scattering of radiation 0360 Radiation: transmission and scattering revised
0365 Troposphere--composition and chemistry 0365 Troposphere: composition and chemistry unchanged
0368 Troposphere--constituent transport and chemistry 0368 Troposphere: constituent transport and chemistry unchanged
0370 Volcanic effects (8409) 0370 Volcanic effects (8409) unchanged
0394 Instruments and techniques 0394 Instruments and techniques unchanged
0399 General or miscellaneous 0399 General or miscellaneous unchanged
  0400 BIOGEOSCIENCES new
    0402 Agricultural systems new
    0404 Anoxic and hypoxic environments (4802, 4834) new
    0406 Astrobiology and extraterrestrial materials new
    0408 Benthic processes (4804) new
    0409 Bioavailability: chemical speciation and complexation new
    0410 Biodiversity new
    0412 Biogeochemical kinetics and reaction modeling (0414, 0793, 1615, 4805, 4912) new
    0414 Biogeochemical cycles, processes, and modeling (0412, 0793, 1615, 4805, 4912) new
    0416 Biogeophysics new
    0418 Bioremediation new
    0419 Biomineralization new
    0420 Biomolecular and chemical tracers new
    0422 Bio-optics new
    0424 Biosignatures and proxies new
    0426 Biosphere/atmosphere interactions (0315) new
    0428 Carbon cycling (4806) new
    0429 Climate dynamics (1620) new
    0430 Computational methods and data processing new
    0432 Contaminant and organic biogeochemistry (0792) new
    0434 Data sets new
    0438 Diel, seasonal, and annual cycles (4227) new
    0439 Ecosystems, structure and dynamics (4815) new
    0442 Estuarine and nearshore processes (4235) new
    0444 Evolutionary geobiology new
    0448 Geomicrobiology new
    0450 Hydrothermal systems (1034, 3017, 3616, 4832, 8135, 8424) new
    0452 Instruments and techniques new
    0454 Isotopic composition and chemistry (1041, 4870) new
    0456 Life in extreme environments new
    0458 Limnology (1845, 4239, 4942) new
    0459 Macro- and micropaleontology (3030, 4944) new
    0460 Marine systems (4800) new
    0461 Metals new
    0463 Microbe/mineral interactions new
    0465 Microbiology: ecology, physiology and genomics (4840) new
    0466 Modeling new
    0468 Natural hazards new
    0469 Nitrogen cycling new
    0470 Nutrients and nutrient cycling (4845, 4850) new
    0471 Oxidation/reduction reactions (4851) new
    0473 Paleoclimatology and paleoceanography (3344, 4900) new
    0475 Permafrost, cryosphere, and high-latitude processes (0702, 0716) new
    0476 Plant ecology (1851) new
    0478 Pollution: urban, regional and global (0345, 4251) new
    0480 Remote sensing new
    0481 Restoration new
    0483 Riparian systems (0744, 1856) new
    0485 Science policy (6620) new
    0486 Soils/pedology (1865) new
    0488 Sulfur cycling new
    0489 Trace element cycling (4875) new
    0490 Trace gases new
    0491 Food webs and trophodynamics (4817) new
    0493 Urban systems new
    0495 Water/energy interactions (1878) new
    0496 Water quality new
    0497 Wetlands (1890) new
    0498 General or miscellaneous new
    0499 New fields (not classifiable under other headings) new
  0500 COMPUTATIONAL GEOPHYSICS (3200, 3252, 7833) new
    0510 Agent-based new
    0555 Neural networks, fuzzy logic, machine learning new
    0560 Numerical solutions (4255) new
    0594 Instruments and techniques new
    0599 General or miscellaneous new
0600 ELECTROMAGNETICS 0600 ELECTROMAGNETICS unchanged
0604 Antenna arrays 0604 Antenna arrays unchanged
0609 Antennas 0609 Antennas unchanged
0614 Biological effects 0614 Biological effects unchanged
0619 Electromagnetic theory 0619 Electromagnetic theory unchanged
0624 Guided waves 0624 Guided waves unchanged
0629 Inverse scattering 0629 Inverse scattering unchanged
0634 Measurement and standards 0634 Measurement and standards unchanged
0639 Nonlinear electromagnetics 0639 Nonlinear electromagnetics unchanged
0644 Numerical methods 0644 Numerical methods unchanged
0649 Optics 0649 Optics (4264) unchanged, added xr
0654 Plasmas 0654 Plasmas unchanged
0659 Random media and rough surfaces 0659 Random media and rough surfaces unchanged
0664 Reflectors and feeds 0664 Reflectors and feeds unchanged
0669 Scattering and diffraction 0669 Scattering and diffraction unchanged
0674 Signal processing and adaptive antennas 0674 Signal processing and adaptive antennas (6974) unchanged, aded xr
0679 Singularity expansion method 0679 Singularity expansion method unchanged
0684 Transient and time domain 0684 Transient and time domain unchanged
0689 Wave propagation (4275) 0689 Wave propagation (2487, 3285, 4275, 4455, 6934) unchanged, added xr
0694 Instrumentation and techniques 0694 Instruments and techniques unchanged
0699 General or miscellaneous 0699 General or miscellaneous unchanged
  0700 CRYOSPHERE (4540) new
    0702 Permafrost (0475) new
    0704 Seasonally frozen ground new
    0706 Active layer new
    0708 Thermokarst new
    0710 Periglacial processes new
    0712 Cryosol new
    0714 Clathrate new
    0716 Cryobiology (0475) new
    0718 Tundra (9315) new
    0720 Glaciers new
    0722 Rock glaciers new
    0724 Ice cores (4932) new
    0726 Ice sheets new
    0728 Ice shelves new
    0730 Ice streams new
    0732 Icebergs new
    0734 Icing (aufeis, naled) new
    0736 Snow (1827, 1863) new
    0738 Ice (1863) new
    0740 Snowmelt new
    0742 Avalanches new
    0744 Rivers (0483, 1856) new
    0746 Lakes (9345) new
    0748 Ponds new
    0750 Sea ice (4540) new
    0752 Polynas (4540) new
    0754 Leads (4540) new
    0758 Remote sensing new
    0760 Engineering new
    0762 Mass balance (1218, 1223) new
    0764 Energy balance new
    0766 Thermodynamics (1011, 3611, 8411) new
    0768 Thermal regime new
    0770 Properties new
    0772 Distribution new
    0774 Dynamics new
    0776 Glaciology (1621, 1827, 1863) new
    0790 Weathering (1625, 1886) new
    0792 Contaminants (0432) new
    0793 Biogeochemistry (0412, 0414, 1615, 4805, 4912) new
    0794 Instruments and techniques new
    0798 Modeling new
    0799 General or miscellaneous new
  0800 EDUCATION new, moved from 6605
    0805 Elementary and secondary education new
    0810 Post-secondary education new
    0815 Informal education new
    0820 Curriculum and laboratory design new
    0825 Teaching methods new
    0830 Teacher training new
    0840 Evaluation and assessment new
    0845 Instructional tools new
    0850 Geoscience education research new
    0855 Diversity new
0900 EXPLORATION GEOPHYSICS 0900 EXPLORATION GEOPHYSICS unchanged
0902 Computational methods: seismic 0902 Computational methods: seismic unchanged
0903 Computational methods: potential fields 0903 Computational methods: potential fields (1214) unchanged, added xr
0905 Continental structures (8109, 8110) 0905 Continental structures (8109, 8110) unchanged
0910 Data processing 0910 Data processing unchanged
0915 Downhole methods 0915 Downhole methods unchanged
0920 Gravity methods 0920 Gravity methods (1219) unchanged, added xr
0925 Magnetic and electrical methods 0925 Magnetic and electrical methods (5109) unchanged, added xr
0930 Oceanic structures 0930 Oceanic structures unchanged
0932 Radioactivity methods 0932 Radioactivity methods unchanged
0933 Remote sensing 0933 Remote sensing unchanged
0935 Seismic methods (3025) 0935 Seismic methods (3025, 7294) unchanged, added xr
0994 Instruments and techniques 0994 Instruments and techniques unchanged
0999 General or miscellaneous 0999 General or miscellaneous unchanged
1000 GEOCHEMISTRY 1000 GEOCHEMISTRY unchanged
    1009 Geochemical modeling (3610, 8410) new
1010 Chemical evolution     deleted
    1011 Thermodynamics (0766, 3611, 8411) new
    1012 Reactions and phase equilibria (3612, 8412) new
    1031 Subduction zone processes (3060, 3613, 8170, 8413) new
    1032 Mid-oceanic ridge processes (3614, 8416) new
    1033 Intra-plate processes (3615, 8415) new
    1034 Hydrothermal systems (0450, 3017, 3616, 4832, 8135, 8424) new
    1039 Alteration and weathering processes (3617) new
    1036 Magma chamber processes (3618) new
    1037 Magma genesis and partial melting (3619) new
    1038 Mantle processes (3621) new
1015 Composition of the core 1015 Composition of the core unchanged
1020 Composition of the crust 1020 Composition of the continental crust split to 1020 and 1021
    1021 Composition of the oceanic crust new
    1022 Composition of the hydrosphere new
    1023 Composition of the biosphere new
1025 Composition of the mantle 1025 Composition of the mantle unchanged
    1026 Composition of the moon new
    1027 Composition of the planets new
    1028 Composition of meteorites (3662, 6240) new
    1029 Composition of aerosols and dust particles new
1030 Geochemical cycles (0330) 1030 Geochemical cycles (0330) unchanged
1035 Geochronology     deleted, moved to new category 1100
1065 Trace elements (3670) 1065 Major and trace element geochemistry revised
1040 Isotopic composition/geochemistry 1040 Radiogenic isotope geochemistry revised
    1041 Stable isotope geochemistry (0454, 4870) new
    1042 Mineral and crystal chemistry (3620) new
    1043 Fluid and melt inclusion geochemistry new
1045 Low-temperature geochemistry     deleted
1050 Marine geochemistry (4835, 4850) 1050 Marine geochemistry (4835, 4845, 4850) unchanged
    1051 Sedimentary geochemistry new
1055 Organic geochemistry 1055 Organic and biogenic geochemistry revised
1060 Planetary geochemistry (5405, 5410, 5704, 5709, 6005, 6008) 1060 Planetary geochemistry (5405, 5410, 5704, 5709, 6005, 6008) unchanged
    1090 Field relationships (3690, 8486) new
1094 Instruments and techniques 1094 Instruments and techniques unchanged
1099 General or miscellaneous 1099 General or miscellaneous unchanged
  1100 GEOCHRONOLOGY new (was 1035)
    1105 Quaternary geochronology new
    1110 Sidereal geochronology new
    1115 Radioisotope geochronology new
    1120 Isotopic disequilibrium dating new
    1125 Chemical and biological geochronology new
    1130 Geomorphological geochronology new
    1135 Correlative geochronology new
    1140 Thermochronology new
    1145 Tephrochronology (8455) new
    1150 Cosmogenic-nuclide exposure dating (4918) new
    1155 Extinct radionuclide geochronology new
    1160 Planetary and lunar geochronology new
    1165 Sedimentary geochronology new
    1194 Instruments and techniques new
    1199 General or miscellaneous new
1200 GEODESY and GRAVITY 1200 GEODESY and GRAVITY unchanged
1206 Crustal movements--interplate (8155)     deleted
1208 Crustal movements--intraplate (8110)     deleted
1210 Diurnal and subdiurnal rotational variations     deleted
1224 Photogrammetry     deleted
1244 Standards and absolute measurements 1244 Standards and absolute measurements unchanged
    1295 Integrations of techniques new
    1240 Satellite geodesy: results (6929, 7215, 7230, 7240) new
1241 Satellite orbits 1241 Satellite geodesy: technical issues (6994, 7969) revised
1243 Space geodetic surveys 1243 Space geodetic surveys unchanged
1204 Control surveys 1204 Control surveys unchanged
1242 Seismic deformations (7205) 1242 Seismic cycle related deformations (6924, 7209, 7223, 7230) revised
    1207 Transient deformation (6924, 7230, 7240) new
    1209 Tectonic deformation (6924) new
    1211 Non-tectonic deformation new
1212 Earth's interior--composition and state (8105, 8124) 1212 Earth's interior: composition and state (7207, 7208, 8105, 8124) unchanged, added xr
1213 Earth's interior--dynamics ( 8115, 8120) 1213 Earth's interior: dynamics (1507, 7207, 7208, 8115, 8120) unchanged, added xr
1236 Rheology of the lithosphere and mantle (8160) 1236 Rheology of the lithosphere and mantle (7218, 8160) unchanged, added xr
1219 Local gravity anomalies and crustal structure 1219 Gravity anomalies and Earth structure (0920, 7205, 7240) revised, added xr
1214 Geopotential theory and determination 1214 Geopotential theory and determination (0903) unchanged, added xr
1227 Planetary geodesy and gravity (5420, 5714, 6019)     deleted, merged into 1221
    1217 Time variable gravity (7223, 7230) new
1229 Reference systems 1229 Reference systems unchanged
1234 Regional and global gravity anomalies and Earth structure     deleted, merged into 1219
1239 Rotational variations 1239 Earth rotation variations revised
1223 Ocean/Earth/atmosphere interactions (3339) 1223 Ocean/Earth/atmosphere/hydrosphere/cryosphere interactions (0762, 1218, 3319, 4550) revised, added xr
    1218 Mass balance (0762, 1223, 1631, 1836, 1843, 3010, 3322, 4532) new
    1220 Atmosphere monitoring with geodetic techniques (6952) new
    1222 Ocean monitoring with geodetic techniques (1225, 1641, 3010, 4532, 4556, 4560, 6959) new
    1225 Global change from geodesy (1222, 1622, 1630, 1641, 1645, 4556) new
1247 Terrestrial reference systems     deleted, merged into 1229
1249 Tides--Earth     deleted, merged into 1217
1255 Tides--ocean (4560)     deleted, merged into 1212
1221 Lunar geodesy and gravity (6250) 1221 Lunar and planetary geodesy and gravity (5417, 5450, 5714, 5744, 6019, 6250) revised, merged with 1227, added xr
1294 Instruments and techniques 1294 Instruments and techniques unchanged
1299 General or miscellaneous 1299 General or miscellaneous (1709) unchanged, added xr
1500 GEOMAGNETISM and PALEOMAGNETISM 1500 GEOMAGNETISM and PALEOMAGNETISM unchanged
1503 Archeomagnetism 1503 Archeomagnetism unchanged
1505 Biomagnetism 1505 Biogenic magnetic minerals revised
1507 Core processes (8115) 1507 Core processes (1213, 8115) unchanged, added xr
1510 Dynamo theories 1510 Dynamo: theories and simulations revised
1512 Environmental magnetism 1512 Environmental magnetism unchanged
1513 Geomagnetic excursions 1513 Geomagnetic excursions unchanged
1515 Geomagnetic induction 1515 Geomagnetic induction unchanged
1517 Magnetic anomaly modeling 1517 Magnetic anomalies: modeling and interpretation revised
1518 Magnetic fabrics and anisotropy 1518 Magnetic fabrics and anisotropy unchanged
1519 Magnetic mineralogy and petrology 1519 Magnetic mineralogy and petrology unchanged
1520 Magnetostratigraphy 1520 Magnetostratigraphy unchanged
1521 Paleointensity 1521 Paleointensity unchanged
1522 Paleomagnetic secular variation 1522 Paleomagnetic secular variation unchanged
1525 Paleomagnetism applied to tectonics (regional, global) 1525 Paleomagnetism applied to tectonics: regional, global unchanged
1527 Paleomagnetism applied to geologic processes 1527 Paleomagnetism applied to geologic processes unchanged
1530 Rapid time variations 1530 Rapid time variations unchanged
1532 Reference fields (regional, global) 1532 Reference fields: regional, global unchanged
1533 Remagnetization 1533 Remagnetization unchanged
1535 Reversals (process, timescale, magnetostratigraphy) 1535 Reversals: process, timescale, magnetostratigraphy unchanged
1540 Rock and mineral magnetism 1540 Rock and mineral magnetism unchanged
    1541 Satellite magnetics: main field, crustal field, external field new
1545 Spatial variations (all harmonics and anomalies) 1545 Spatial variations: all harmonics and anomalies unchanged
1550 Spatial variations attributed to seafloor spreading (3005) 1550 Spatial variations attributed to seafloor spreading (3005) unchanged
1555 Time variations--diurnal to decadal 1555 Time variations: diurnal to decadal unchanged
1560 Time variations--secular and longer 1560 Time variations: secular and longer unchanged
1594 Instruments and techniques 1594 Instruments and techniques unchanged
    1595 Planetary magnetism: all frequencies and wavelengths new
1599 General or miscellaneous 1599 General or miscellaneous unchanged
1600 GLOBAL CHANGE 1600 GLOBAL CHANGE unchanged
    1605 Abrupt/rapid climate change (4901, 8408) new
1610 Atmosphere (0315, 0325) 1610 Atmosphere (0315, 0325) unchanged
1615 Biogeochemical processes (4805) 1615 Biogeochemical cycles, processes, and modeling (0412, 0414, 0793, 4805, 4912) unchanged, added xr
    1616 Climate variability (1635, 3305, 3309, 4215, 4513) new
1620 Climate dynamics (3309) 1620 Climate dynamics (0429, 3309) unchanged, added xr
    1621 Cryospheric change (0776) new
    1622 Earth system modeling (1225) new
1625 Geomorphology and weathering (1824, 1886) 1625 Geomorphology and weathering (0790, 1824, 1825, 1826, 1886) unchanged, added xr
    1626 Global climate models (3337, 4928) new
1630 Impact phenomena 1630 Impacts of global change (1225) revised
    1631 Land/atmosphere interactions (1218, 1843, 3322) new
    1632 Land cover change new
1635 Oceans (4203) 1635 Oceans (1616, 3305, 4215, 4513) unchanged, revised xr
    1637 Regional climate change new
1640 Remote sensing 1640 Remote sensing (1855) unchanged, added xr
    1641 Sea level change (1222, 1225, 4556) new
1645 Solid Earth 1645 Solid Earth (1225) unchanged, added xr
1650 Solar variability 1650 Solar variability (7537) unchanged, added xr
1655 Water cycles (1836) 1655 Water cycles (1836) unchanged
1694 Instruments and techniques 1694 Instruments and techniques unchanged
1699 General or miscellaneous 1699 General or miscellaneous unchanged
1700 HISTORY OF GEOPHYSICS 1700 HISTORY OF GEOPHYSICS unchanged
1704 Atmospheric sciences 1704 Atmospheric sciences unchanged
    1705 Biogeosciences new
    1706 Computational geophysics new
    1707 Cryosphere new
    1708 Geochronology new
1709 Geodesy 1709 Geodesy (1299) unchanged, added xr
1714 Geomagnetism and paleomagnetism 1714 Geomagnetism and paleomagnetism unchanged
1719 Hydrology 1719 Hydrology unchanged
    1721 Nonlinear geophysics new
1724 Ocean sciences 1724 Ocean sciences unchanged
1729 Planetology 1729 Planetology unchanged
1734 Seismology 1734 Seismology unchanged
1739 Solar/planetary relationships 1739 Solar/planetary relationships unchanged
1744 Tectonophysics 1744 Tectonophysics unchanged
1749 Volcanology, geochemistry, and petrology 1749 Volcanology, geochemistry, and petrology unchanged
1794 Instruments and techniques 1794 Instruments and techniques unchanged
1799 General or miscellaneous 1799 General or miscellaneous unchanged
1800 HYDROLOGY 1800 HYDROLOGY unchanged
1803 Anthropogenic effects 1803 Anthropogenic effects (4802, 4902) unchanged, added xr
    1804 Catchment new
1806 Chemistry of fresh water 1806 Chemistry of fresh water unchanged
    1807 Climate impacts new
    1805 Computational hydrology new
    1808 Dams new
    1810 Debris flow and landslides new
1809 Desertification 1809 Desertification unchanged
1812 Drought 1812 Drought unchanged
    1813 Eco-hydrology new
    1814 Energy budgets new
1815 Erosion and sedimentation 1815 Erosion split into 1815 and 1861
    1816 Estimation and forecasting new
1818 Evapotranspiration 1818 Evapotranspiration unchanged
    1817 Extreme events new
1821 Floods 1821 Floods unchanged
    1820 Floodplain dynamics new
1823 Frozen ground 1823 Frozen ground unchanged
    1819 Geographic Information Systems (GIS) new
    1822 Geomechanics new
1824 Geomorphology (1625) 1824 Geomorphology: general (1625) revised, split into 1825, 1826
    1825 Geomorphology: fluvial (1625) new, split from 1824
    1826 Geomorphology: hillslope (1625) new, split from 1824
1827 Glaciology (1863) 1827 Glaciology (0736, 0776, 1863) unchanged, added xr
    1828 Groundwater hydraulics new
1829 Groundwater hydrology 1829 Groundwater hydrology unchanged
1831 Groundwater quality 1831 Groundwater quality unchanged
    1830 Groundwater/surface water interaction new
1832 Groundwater transport 1832 Groundwater transport unchanged
    1834 Human impacts new
1833 Hydroclimatology 1833 Hydroclimatology unchanged
    1835 Hydrogeophysics new
1836 Hydrologic budget (1655) 1836 Hydrological cycles and budgets (1218, 1655) revised, added xr
    1840 Hydrometeorology new
    1839 Hydrologic scaling new
    1838 Infiltration new
1842 Irrigation 1842 Irrigation unchanged
    1843 Land/atmosphere interactions (1218, 1631, 3322) new
1845 Limnology 1845 Limnology (0458, 4239, 4942) unchanged, added xr
    1846 Model calibration (3333) new
    1847 Modeling new
1848 Networks 1848 Monitoring networks revised
    1849 Numerical approximations and analysis new
    1850 Overland flow new
1851 Plant ecology 1851 Plant ecology (0476) unchanged, added xr
    1852 Plant uptake new
1854 Precipitation (3354) 1854 Precipitation (3354) unchanged
    1853 Precipitation-radar new
    1855 Remote sensing (1640) new
1857 Reservoirs (surface) 1857 Reservoirs (surface) unchanged
    1856 River channels (0483, 0744) new
    1858 Rocks: chemical properties new
    1859 Rocks: physical properties new
1860 Runoff and streamflow 1860 Streamflow revised
    1861 Sedimentation (4863) new, split from 1815
    1862 Sediment transport (4558) new
1863 Snow and ice (1827) 1863 Snow and ice (0736, 0738, 0776, 1827) unchanged, added xr
    1865 Soils (0486) new
1866 Soil moisture 1866 Soil moisture unchanged
1869 Stochastic processes 1869 Stochastic hydrology revised
1871 Surface water quality 1871 Surface water quality unchanged
    1872 Time series analysis (3270, 4277, 4475) new
    1873 Uncertainty assessment (3275) new
    1874 Ungaged basins new
1875 Unsaturated zone 1875 Vadose zone revised
    1876 Water budgets new
1878 Water/energy interactions 1878 Water/energy interactions (0495) unchanged, added xr
    1879 Watershed new
    1880 Water management (6334) new
1884 Water supply 1884 Water supply unchanged
1886 Weathering (1625) 1886 Weathering (0790, 1625) unchanged, added xr
1890 Wetlands 1890 Wetlands (0497) unchanged, added xr
1894 Instruments and techniques 1894 Instruments and techniques: modeling revised, split into 1894 and 1895
    1895 Instruments and techniques: monitoring new, split from 1894
1899 General or miscellaneous 1899 General or miscellaneous unchanged
2100 INTERPLANETARY PHYSICS 2100 INTERPLANETARY PHYSICS unchanged
    2101 Coronal mass ejections (7513) new
2102 Corotating streams 2102 Corotating streams unchanged
2104 Cosmic rays 2104 Cosmic rays unchanged
2109 Discontinuities 2109 Discontinuities (7811) unchanged, added xr
2111 Ejecta, driver gases, and magnetic clouds 2111 Ejecta, driver gases, and magnetic clouds unchanged
2114 Energetic particles, heliospheric (7514) 2114 Energetic particles (7514) revised, merged 2114, 2116, 2118
2116 Energetic particles, planetary     deleted, merged into 2114
2118 Energetic particles, solar     deleted, merged into 2114
2124 Heliopause and solar wind termination 2124 Heliopause and solar wind termination unchanged
    2126 Heliosphere/interstellar medium interactions new
2129 Interplanetary dust 2129 Interplanetary dust unchanged
2134 Interplanetary magnetic fields 2134 Interplanetary magnetic fields unchanged
2139 Interplanetary shocks 2139 Interplanetary shocks unchanged
2144 Interstellar gas 2144 Interstellar gas unchanged
2149 MHD waves and turbulence 2149 MHD waves and turbulence (2752, 6050, 7836) unchanged, added xr
2151 Neutral particles 2151 Neutral particles (7837) unchanged, added xr
2152 Pickup ions 2152 Pickup ions unchanged
2154 Planetary bow shocks 2154 Planetary bow shocks unchanged
2159 Plasma waves and turbulence 2159 Plasma waves and turbulence unchanged
2162 Solar cycle variations (7536) 2162 Solar cycle variations (7536) unchanged
2164 Solar wind plasma 2164 Solar wind plasma unchanged
2169 Sources of the solar wind 2169 Solar wind sources revised
2194 Instruments and techniques 2194 Instruments and techniques unchanged
2199 General or miscellaneous 2199 General or miscellaneous unchanged
2400 IONOSPHERE 2400 IONOSPHERE (6929) unchanged, added xr
2403 Active experiments 2403 Active experiments unchanged
2407 Auroral ionosphere (2704) 2407 Auroral ionosphere (2704) unchanged
2409 Current systems (2708) 2409 Current systems (2721) unchanged, revised xr
2411 Electric fields (2712) 2411 Electric fields (2712) unchanged
2415 Equatorial ionosphere 2415 Equatorial ionosphere unchanged
2419 Ion chemistry and composition (0335) 2419 Ion chemistry and composition (0335) unchanged
2423 Ionization mechanisms 2423 Ionization processes (7823) unchanged, added xr
2427 Ionosphere/atmosphere interactions (0335) 2427 Ionosphere/atmosphere interactions (0335) unchanged
2431 Ionosphere/magnetosphere interactions (2736) 2431 Ionosphere/magnetosphere interactions (2736) unchanged
2435 Ionospheric disturbances 2435 Ionospheric disturbances unchanged
2437 Ionospheric dynamics 2437 Ionospheric dynamics unchanged
2439 Ionospheric irregularities 2439 Ionospheric irregularities unchanged
    2441 Ionospheric storms (7949) new
    2442 Meteor-trail physics new
2443 Midlatitude ionosphere 2443 Midlatitude ionosphere unchanged
2447 Modeling and forecasting 2447 Modeling and forecasting unchanged
2451 Particle acceleration 2451 Particle acceleration unchanged
2455 Particle precipitation 2455 Particle precipitation unchanged
2459 Planetary ionospheres (5435, 5729, 6026, 6027, 6028) 2459 Planetary ionospheres (5435, 5729, 6026) unchanged, added xr
    2461 Plasma interactions with dust and aerosols (7849) new
2463 Plasma convection 2463 Plasma convection (2760) unchanged, added xr
2467 Plasma temperature and density 2467 Plasma temperature and density unchanged
2471 Plasma waves and instabilities 2471 Plasma waves and instabilities (2772) unchanged, added xr
2475 Polar cap ionosphere 2475 Polar cap ionosphere unchanged
2479 Solar radiation and cosmic ray effects 2479 Solar radiation and cosmic ray effects unchanged
2481 Topside ionosphere 2481 Topside ionosphere unchanged
2483 Wave/particle interactions 2483 Wave/particle interactions (7867) unchanged, added xr
2487 Wave propagation (6934) 2487 Wave propagation (0689, 3285, 4275, 4455, 6934) unchanged, added xr
2494 Instruments and techniques 2494 Instruments and techniques unchanged
2499 General or miscellaneous 2499 General or miscellaneous unchanged
2700 MAGNETOSPHERIC PHYSICS 2700 MAGNETOSPHERIC PHYSICS (6939) unchanged, added xr
2704 Auroral phenomena (2407) 2704 Auroral phenomena (2407) unchanged
    2706 Cusp new
2708 Current systems (2409)     deleted, merged into 2721
2712 Electric fields (2411) 2712 Electric fields (2411) unchanged
2716 Energetic particles, precipitating 2716 Energetic particles: precipitating unchanged
2720 Energetic particles, trapped 2720 Energetic particles: trapped unchanged
    2721 Field-aligned currents and current systems (2409)