AMSU	Advanced Microwave Sounding Unit
ARM	Atmospheric Radiation Measurement
ARS	Agriculture Research Service
ASOS	Automated Surface Observing System
ASTER	Advanced Spaceborne Thermal Emission and Reflectance Radiometer
AVHRR	Advanced Very High Resolution Radiometer
AWOS	Automated Weather Observing System
BOREAS	Boreal Ecosystem Atmosphere Study
BRDF	Bi-directional Reflectance Factor
CART	Clouds and Radiation Testbed
CERES	Clouds and the Earth's Radiant Energy
CSA	Continental-Scale Area
DAAC	Distributed Active Archive Center
DACOM	Data Collection and Management
DMSP	Defense Meteorological Satellite Program
DMSS	Data Management and Service
DNR	Department of Natural Resources
EAOP	Enhanced Annual Observing Period
EDC	EROS Data Center
EOP	Enhanced Observing Period
EOS	Earth Observing System
EOSDIS	Earth Observing System Data and Information System
ERBE	Earth Radiation Budget Experiment
EROS	Earth Resources Observation System
ETM	Enhanced Thermatic Mapper
FPAR	Fractional of Absorbed Photosynthetically Active Radiation
FRD	Field Research Division
GCIP	GEWEX Continental-scale International Project
GEM	Global Environment Multiscale Model
GEWEX	Global Energy and Water Cycle Experiment
GHCC	Global Hydrology and Climate Center
GIDS	GCIP Initial Data Sets
GIS	Geographic Information Systems
GOES	Geostationary Operational Environmental Satellite
GSFC	Goddard Space Flight Center (NASA)
HIRS/2	High Resolution Infrared Radiation Sounder/2
IGPO	International GEWEX Project Office
IR	Infrared
IRI	Interdisciplinary Research Initiative
ISA	Intermediate Scale Areas
ISLSCP	International Satellite Land Surface Climatology Project
LAI	Leaf Area Index
LDAS	Land Data Assimilation System
LaRC	Langley Research Center (NASA)
LSA	Large Scale Area
LSA-E	Large-Scale Area-East
LSA-NC	Large-Scale Area-Northcentral
LSA-NW	Large-Scale Area-Northwest
LSA-SW	Large-Scale Area-Southwest
LTER	Long Term Environmental Research
MAPS	Mesoscale Analysis and Prediction System
MBRFC	Missouri Basin River Forecast Center
MISR	Multi-Angle Imaging Spectroradiometer
MLRA	Major Land Resource Area
MODIS	Moderate-Resolution Imaging Spectroradiometer
MOLTS	Model Locations Time Series
MOPITT	Measurement of Pollution in the Troposphere
MORDS	Model Output Reduced Data Set
MSEA	Management Systems Evaluation Areas
MSFC	Marshall Space Flight Center (NASA)
MSU	Microwave Sounding Unit
MTPE	Mission To Planet Earth
NASA	National Aeronautics and Space Administration
NASS	National Agricultural Statistics Service
NCDC	National Climatic Data Center
NCEP	National Centers for Environmental Prediction
NDVI	Normalized Difference Vegetation Index
NESDIS	National Environmental Satellite, Data, and Information Service
NGDC	National Geophysical Data Center
NOAA	National Oceanic and Atmospheric Administration
NOHRSC	National Operational Hydrologic Remote Sensing Center
NRCS	Natural Resources Conservation Service
NSF	National Science Foundation
NSIDC	National Snow and Ice Data Center
NSTL	National Soil Tilth Laboratory
NWS	National Weather Service
OH	Office of Hydrology
RFC	River Forecast Centers
RFE	Regional Finite Element
SAST	Scientific Assessment and Strategy Team
SAO	Special Observations
SOWATT	Soil Water and Temperature Transect
SSA	Small Scale Areas
SSM/I	Special Sensor Microwave/Imager
SSU	Stratospheric Sounding Unit
SURFRAD	Surface Radiation
TIROS	Television InfraRed Observation Satellite
TOA	Top of the Atmosphere
TOVS	TIROS Operational Vertical Sounder
UCAR	University Corporation for Atmospheric Research
UMD	University of Maryland
USACE	U.S. Army Corps of Engineers
USDA	U.S. Department of Agriculture
USGS	United States Geological Survey
USWRP	U.S. Weather Research Program
WMO	World Meteorological Organization
WRD	Water Resource Division
WSR-88D	Weather Service Radar 88-Doppler