| ACARS | ARINC Communications and Reporting System |
| ACCP | Atlantic Climate Change Program |
| AFGWC | U.S. Air Force Global Weather Center |
| AFOS | Automation of Field Operations and Services |
| AIP | Algorithm Intercomparison Project (satellite precipitation) |
| AMI | Advanced Microwave Instrument (ERS-1) |
| AGCM | Atmospheric General Circulation Model |
| AMIP | Atmospheric Model Intercomparison Project |
| AMS | American Meteorological Society |
| AMSU | Advanced Microwave Sounding Unit |
| API | Application Programmer Interface |
| ARCSS | Arctic System Science |
| ARINC | Aeronautical Radio, Inc. |
| ASDAR | Aircraft to Satellite Data Relay |
| ASCII | American Standard Code for Information Interchange |
| ASOS | Automated Surface Observing System |
| ATMOS | Atmospheric Trace Molecular Spectroscopy |
| ATS | Advanced Technology Satellite |
| ATSR | Along-track Scanning Radiometer |
| AVHRR | Advanced Very High Resolution Radiometer |
| AWIPS | Advanced Weather Interactive Processing System |
| CAC | Climate Analysis Center (now CPC) |
| CAMS | Climate Anomaly Monitoring System |
| CARDS | Comprehensive Aerological Reference Data Set |
| CCC | Canadian Centre for Climate Modelling and Analysis |
| CCM | Community Climate Model (NCAR); CCM2 is the most recent version |
| CERN | European Laboratory for Particle Physics |
| CDAS | Climate Data Assimilation Scheme |
| CDC | Control Data Corporation |
| CDF | Common Data Format |
| CDIAC | Carbon Dioxide Information Analysis Center |
| CIESIN | Consortium for International Earth Science Info. Network |
| CD-ROM | Compact Disc-Read-Only Memory |
| CEDAR | Coupled Energetics and Dynamics of Atmospheric Regions |
| CERES | Clouds and the Earth's Radiant Energy System |
| CFC | chlorofluorocarbons |
| CHAMMP | Computer Hardware, Advanced Mathematics, and Model Physics |
| CIRES | Cooperative Institute for Research in
Environmental Science (UC - Boulder) |
| CLIMAP | Climate Mapping and Prediction |
| CLIVAR | Climate Variability and Predictability |
| CMAP | Climate Modeling, Analysis and Prediction |
| CMC | Canadian Meteorological Centre |
| CNES | Centre Nationale d'Etudes Spatiales (French National Center for Space Studies) |
| COADS | Comprehensive Ocean-Atmosphere Data Set |
| COARE | Coupled Ocean-Atmosphere Response Experiment |
| COLA | Center for Ocean-Land-Atmosphere Studies |
| CPC | Climate Prediction Center (formerly CAC) |
| CPP | Cloud Photopolarimeter |
| CRI | Climate Research Institute (Oklahoma State University) |
| CSM | Climate System Modeling |
| EBCDIC | Extended Binary Coded Data Interchange Code (from IBM) |
| ECMWF | European Centre for Medium-Range Weather Forecasting |
| EDIS | Environmental Data and Information Service |
| EDS | Environmental Data Service |
| EM | Electromagnetic Radiation |
| ENSO | El Nino Oscillation |
| EOF | Empirical Orthogonal Functions (Principal Components) |
| EOS | Earth Observing System |
| EOSDIS | EOS Data and Information System |
| EPA | U.S. Environmental Protection Agency |
| ERB | Earth Radiation Budget |
| ERS | European Remote Sensing |
| ERBE | Earth Radiation Budget Experiment |
| ERL | Environmental Research Laboratory (NOAA) |
| ESA | European Space Agency |
| ESSA | U.S. Environmental Science Services Agency (forerunner of NOAA |
)
| ESAER | European Space Agency's Earth Resources Satellite |
| ESMR | Electronically Scanning Microwave Radiometer |
| ESSA | Environmental Science Service Administration |
| ETAC | U.S. Air Force Environmental Technical Applications Center |
| FAA | U.S. Federal Aviation Administration |
| FAQ | Frequently Asked Question |
| FCDS | U.S. Navy Fleet Consolidated Data Set |
| FGGE | First GARP Global Experiment |
| FGGE SOP | FGGE Special Observing Period |
| FNOC | U.S. Navy Fleet Numerical Oceanographic Center |
| FNWC | U.S. Navy Fleet Numerical Weather Center |
| FORTRAN | FORmula TRANslation (a computer language) |
| FSL | Forecast Systems Laboratory of ERL (NOAA) |
| FTP | File Transfer Protocol |
| GARP | Global Atmospheric Research Program |
| GATE | GARP Atlantic Tropical Experiment |
| GCDIS | Global Change Data Information System |
| GISS | GSFC Institute for Space Studies |
| GCIP | GEWEX Continental--Scale International Project |
| GCOS | Global Climate Observing System |
| GRIB | Gridded Binary |
| GCM | General (or Global) Circulation Model |
| GCRP | Global Change Research Program |
| CGSS | GEWEX Cloud System Study |
| GCTE | Global Change and Terrestrial Ecosystems |
| GDAAC | Goddard Distributed Active Archive Center |
| GEOS | Geodynamics Experimental Ocean Satellite (launched 9 Apr 1975) |
| GEWEX | Global Energy and Water Cycle Experiment |
| GFDL | Geophysical Fluid Dynamics Laboratory |
| GOALS | Global Ocean Atmosphere Land System |
| GMS | Geostationary Meteorological Satellite |
| GMT | Grenwich Mean Time |
| GOES | Geostationary Operational Environmental Satellite |
| GOF | Global Ocean Flux |
| GORDA | Global Oceanographic Data Archaeology and Rescue |
| GPI | GOES Precipitation Index |
| GPS | Global Positioning System |
| GSFC | Goddard Space Flight Center |
| GTS | Global Telecommunications System |
| GWE | Global Weather Experiment |
| IBM | International Business Machines |
| IDCS | Image Dissector Camera System |
| IEEE | The Institute of Electrical and Electronics Engineers |
| IEOS | International Earth Observing System |
| IGBP | International Geosphere-Biosphere Program |
| IGY | International Geophysical Year (1 July 1957 - 31 December
1958) |
| INSAT | Indian Satellite |
| IO | Input/Output |
| IP | Internet Protocol |
| IPCC | Intergovernmental Panel on Climate Change |
| IR | Infrared Radiation |
| IRIS | Infrared Interferometer Spectrometer |
| IRTM | Infrared Thermal Mapper |
| ISAMS | Improved Stratospheric and Mesospheric Sounder |
| ISCCP | International Satellite Cloud Climatology Project |
| ISIS | Integrated Surface Irradiance Study (NOAA) |
| ISLSCP | International Satellite Land Surface Climatology Project |
| ISWS | Illinois State Water Survey |
| ITCZ | Intertropical Convergence Zone |
| ITOS | Improved TIROS Operational System |
| ITPR | Infrared Temperature Profile Radiometer |
| NASA | U.S. National Aeronautics and Space Administration |
| NBS | U.S. National Bureau of Standards |
| NCAR | U.S. National Center for Atmospheric Research |
| NCC | U.S. National Climatic Center (now NCDC) |
| NCDC | U.S. National Climatic Data Center |
| NCDS | NASA Climate Data System |
| NCEP | National Centers for Environmental Prediction (formerly NMC) |
| NCL | NCAR Command Language |
| NCSA | National Center for Supercomputing Applications |
| NDBC | National Data Bouy Center |
| NESDIS | U.S. National Environmental Satellite, Data, and Information Service |
| NESS | U.S. National Environmental Satellite Service |
| NEXRAD | Next Generation Radar (WSR-88D) |
| NGDC | U.S. National Geophysical Data Center |
| NGSDC | U.S. National Geophysical and Solar-Terrestrial Data Center |
| netCDF | Network Common Data Format |
| NH | Northern Hemisphere |
| NHC | U.S. National Hurricane Center |
| NHEML | U.S. National Hurricane Experimental Meteorological Laboratory |
| NHRE | U.S. National Hail Research Experiment |
| NMC | U.S. National Meteorological Center (now NCEP) |
| NNMI | Nonlinear Normal Mode Initialization |
| NOAA | U.S. National Oceanic and Atmospheric Administration |
| NODC | U.S. National Oceanographic Data Center |
| NOO | U.S. National Oceanographic Office |
| NORDA | U.S. Naval Ocean Research and Development Activity |
| NOS | U.S. National Ocean Survey |
| NRL | U.S. Naval Research Laboratory |
| NSBF | U.S. National Scientific Balloon Facility (NCAR-ATD) |
| NSF | U.S. National Science Foundation |
| NSFNET | National Science Foundation Network |
| NSIDC | U.S. National Snow and Ice Data Center |
| NSSDC | U.S. National Space Science Data Center |
| NSSFC | U.S. National Severe Storms Forecast Center |
| NSSL | U.S. National Severe Storms Laboratory |
| NTIS | U.S. National Technical Information Service |
| NUC | U.S. National Underseas Research Center |
| NVAP | NASA Water Vapor Project |
| NWP | Numerical Weather Experiment |
| NWRC | U.S. National Weather Records Center |
| NWS | U.S. National Weather Service |
| SAGE | Stratospheric Aerosol and Gas Experiment |
| SAM | Stratospheric Aerosol Measurement |
| SAR | Synthetic Aperture Radar |
| SASS | Seasat A Scatterometer System |
| SATOBS | Satellite Observations |
| SCD | Scientific Computing Division (of NCAR) |
| SCRIPPS | Scripps Oceanographic Institute (University of California at San Diego) |
| SEDAC | Socioeconomic Data and Applications Center |
| SFC | Surface |
| SH | Southern Hemisphere |
| SIRS | Satellite Infrared Spectrometer |
| SLP | Pressure at (what would be) Sea Level |
| SMM | Solar Maximum Mission |
| SMMR | Scanning Multichannel Microwave Radiometer |
| SO | Southern Oscillation |
| SOI | Southern Oscillation Index |
| SOLRAD | Solar Radiation Network (now defunct; NOAA) |
| SPARC | Stratospheric Processes and their Role in Climate |
| SR | Scanning Radiometer |
| SSHT | Sea Surface Height (above some reference ellipsoid) |
| SSI | Spectral Statistical Interpolation |
| SSM/I | Special Sensor Microwave/Imager |
| SST | Sea Surface Temperature |
| SSU | Stratospheric Sounding Unit |
| STP | Station Pressure |
| SW | Short Wave |
| SWRP | Space Weather Research Program |
| TAO | Tropical Atmosphere Ocean |
| TCP/IP | Transmission Control Protocol/Internet Protoco |
l
| TDL | Techniques Development Laboratory |
| TIROS | Television Infrared Observing Satellite |
| TOGA | Tropical Oceans Global Atmosphere |
| TOMS | Total Ozone Mapping Spectrometer |
| TOPEX | Ocean Topography Experiment |
| TOS | TIROS Observational System |
| TOVS | Tiros Operational Vertical Sounder |
| TRMM | Tropical Rainfall Measuring Mission |
| Tsfc | Surface Temperature |
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