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Acronym List


Acronym Definition
3ROX Three Rivers Optical Exchange
3S Small Satellite System, Suite de Systeme SPOT, SPOT Successor System
A Back to top
AAOE Airborne Antarctic Ozone Experiment
AATSR Advanced Along-Track Scanning Radiometer
ACCESS Advancing Collaborative Connections for Earth System Science program
ACR Active Cavity Radiometer
ACRIM Active Cavity Radiometer Irradiance Monitor
ACRIMSAT Active Cavity Radiometer Irradiance Monitor Satellite
ACRS/TLAS Automated Conflict Resolution System/TDRSS Look Angle System
ACSI American Customer Satisfaction Index
ACTS Advanced Communication Technology Satellite
ADC Affiliated Data Center
ADEO Advanced Earth Observing Satellite
ADEOS Advanced Earth Observing System
ADM Atmospherics Dynamics Mission
ADN ASTER Data Network
ADRG ARC-Digitized Raster Graphics
ADS40 Airborne Digital Sensor 40
ADSL Asymmetric Digital Subscriber Line
ADURD Archiving, Distribution and User Services Requirements in EOSDIS
AEB Agencia Espacial Brasileira
AEM-2 Application Explorer Mission-2
AERI Atmospheric Emitted Radiance Interferometer
AERONET Aerosol Robotic Network
AES Atmospheric Environmental Service
AESICS ASTER Emergency Scheduling Interface and Control System
AGI Advanced Global Imager
AGS Alaska Ground Station
AGU American Geophysical Union
AHAP Alaska High-Altitude aerial Photography
AIAA American Institute of Aeronautics and Astronautics
AIMs Africover Interpretation and Mapping System
AIMS Airborne Integrated Mapping System
AIR Airborne Imaging Radar
AirMISR Airborne Multi-Angle Imaging Spectroradiometer
AIRS Atmospheric Infrared Sounder
AIRSAR Aircraft Synthetic Aperture Radar
ALEXIS Array of Low Energy X-Ray Imaging Sensors
ALI Advanced Land Imager
ALOS Advanced Land Observation Satellite
ALS Aerial (Airborne) Laser Scanning
ALTM Airborne Laser Terrain Mapper
ALTMS Airborne Lidar Topographic Mapping System
AM Automated Mapping
AM/FM Automated Mapping/Facilities Management
AMI SAR Active Microwave Imager Synthetic Aperture Radar
AMPR Advanced Microwave Precipitation Radiometer
AMPS Automatic Mapping and Planning System
AMR Altimetry Microwave Radiometer
AMRIR Advanced Medium Resolution Imaging Radiometer
AMS American Meteorological Society
AMSD Adjusted Mapping Support Data
AMSR Advanced Microwave Scanning Radiometer
AMSR-CU Advanced Microwave Scanning Radiometer - Control Unit
AMSR-E Advanced Microwave Scanning Radiometer for EOS
AMSR-SU Advanced Microwave Scanning Radiometer - Sensor Unit
AMSU Advanced Microwave Sounding Unit
AMSU-A1 AMSU-A1 Module - Receives V and W Band Frequencies on Channels 3-15
AMSU-A2 AMSU-A2 Module - Receives K and Ka Band Frequencies on Channels 1 & 2
AMSU-B Advanced Microwave Sounding Unit-B (Earlier MHS, Became HSB)
AMTS Advanced Moisture and Temperature Sounder
ANGe Archive Next Generation
ANOVA Analysis of Variance
AO Announcement of Opportunity
AOIPS Atmospheric and Oceanographic Image Processing System
AOL Airborne Oceanographic Lidar
AOS ASTER Operation Segment
AOSP Advanced On-Board Signal Processor
APAN Asia Pacific Area Network
APAR Absorbed Photosynthetic Active Radiation
APCM Aerial Photography Contract Management System
API Application programming interface
APID Application Process Identifier
APT Automatic Picture Transmission
AQT Association Québecoise de Télédétection
ARA Atmospheric Radiation Analysis
ARB 48" Lidar Aerosol Reserach Branch
ARC Ames Research Center
ARESE ARM (Atmospheric Radiation Measurement) Enhanced Shortwave Experiment
ARGOS Argos Data Collection and Position Location System
ARIN American Registry of Internet Names
ARISTOTELES Applications and Research Involving Space Technologies Observing The Earths' field from Low Earth orbiting Satellite
ARMSAT Atmospheric Radiation Measurement Satellite
ARVI Atmospherically Resistant Vegetation Index
AS Access Subgroup (Part of CEOS-WGISS)
ASAR Advanced Synthetic Aperture Radar
ASAS Advanced Solid-State Array Spectrometer
ASC Agence Spatiale Canadienne
ASCA Advanced Satellite for Cosmology and Astrophysics
ASCAT Advanced Scatterometer
ASCIE American Standard Code for Information Exchange
ASCII American Standard Code for Information Interchange
ASDC Atmospheric Science Data Center (Langley Research Center)
ASF Alaska Satellite Facility
ASF SDC Alaska Satellite Facility SAR Data Center (DAAC)
ASFUWG ASF User Working Group
ASI Agenzia Spaziale Italiana (Italian Space Agency)
ASP Alaska SAR Processor
ASTER Advanced Spaceborne Thermal Emission and Reflection Radiometer
ATBD Algorithm Theoretical Basis Document
ATDRSS Advanced Tracking and Data Relay Satellite System
ATES Alcatel Espace Systems
ATLAS Advanced Thermal and Land Applications Sensor
ATLID ATmospheric LIDar
ATM Asynchronous Transfer Mode
ATMOS Atmospheric Observations Satellite (Trace Molecules Observed by Spectroscopy)
ATMS Advanced Technology Microwave Sounder
ATOST Atlantic - THORpex Observing System Test
ATR1 Automatic Target Recognition Module (Leica)
ATS Advanced Technology Satellite
ATSR Along Track Scanning Radiometer (ESA ERS)
AVHRR Advanced Very High-Resolution Radiometer
AVHRR GAC AVHRR Global Coverage Area
AVHRR LAC AVHRR Local Area Coverage
AVIRIS Airborne Visible and Infrared Imaging Spectrometer
AVIS Airborne Vegetation Index Sensor
AVNIR Advanced Visible and Near-Infrared Radiometer
A tool for monitoring and forecasting Available WAter REsource in
mountain environment
AWiFS Advanced Wide Field Sensor
AWOTS Automated Wallops Orbital Tracking Station
B Back to top
bbFTS BaBar File Transfer Protocol
BGP Boundary Gateway Protocol
BIH Bureau International de l’Heure
BIPM Bureau International des Poids et Mesures
BNSC British National Space Centre (UK)
BRDF Bi-directional Reflectance Distribution Function
BUFR Binary Universal Form for the Representation of meteorological data
BWC Bandwidth Compression
BWE Bandwidth Expansion
C Back to top
C5/6 Collection 5/6 MODIS data
C-MARE Central Mediterranean Aerosol and Radiation Experiment
C-STAR Conically Scanning Two-Look Airborne Radiometer
CADU Channel Access Data Units
CAL WG Calibration Working Group
CAL/VAL Calibration/Validation
CALIOP Cloud-Aerosol LIdar and with Orthogonal Polarization
CALIPSO Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation
CalREN California Research and Education Network
CALS Cloud and Aerosol Lidar System
CAMEX Convection and Moisture Experiment
CBERS China-Brazil Earth Resources Satellite Program
CCB Configuration Control Board
CCD Charged Coupled Device
CCRS Canada Centre for Remote Sensing
CCSDS Consultative Committee for Space Data Systems
CDAS Command and Data Acquisition Station
CDB Command Data Block
CDDIS Crustal Dynamics Data Information System
CDF Common Data Format
CDIAC Carbon Dioxide Information and Analysis Center (DOE/ORNL)
CDMS Cryospheric Data Management System (NSIDC)
CDRC CIESIN Data and Research Center
CEES Committee on Environment and Natural Resources Research
CEMSCS Central Environmental Monitoring Satellite Computer System (NOAA)
CEMSDS Central Environmental Satellite Data System
CEO European Centre for Earth Observation
CEOS Committee on Earth Observation Satellites
CEOSWGD/CS CEOS Working Group on Data, Catalog Subgroup
CERES Clouds and the Earth's Radiant Energy System
CESA Conical Earth Sensor Assembly
CESBIO Centre d’ Études Spatiales de la Biosphère (France)
CESDIS Center for Excellence in Space Data and Information Sciences (GSFC)
CFC Chlorofluorocarbon
CFI Claes Fornell International
CIESIN Consortium for International Earth Science Information Network
CINTEX CEOS Catalogue Interoperability Experiment
CIR Color Infrared
CIRS Composition Infrared Spectrometer
CIS Cryogenic Interferometer Spectrometer
CIWG Catalog Interoperability Working Group
CL Command Language
CLAES Cryogenic Limb Array Etalon Spectrometer
CLAMS Cheasapeake Lighthouse and Aircraft Measurements for Satellites
CLCW Command Link Control Word
CM Configuration Management
CMG Climate modeling grid
CMIS Conical Scanning Microwave Imager/Sounder
CMO Configuration Management Office
CMR Common Metadata Repository
CNES Centre National d’Études Spatiales (France)
CNR Consiglio Nazionale delle Ricerche (Italy)
CNRS Centre National de la Recherche Scientifique (France)
CO Contracting Officer
COARE Continental Ocean-Atmosphere Regional Experiment
CODMAC Committee on Data Management, Archiving, and Computing
COMMGR Communications Manager
CONAE Comision National de Actividades Espaciales
CONUS Conterminous United States
CORINE Coordination of Information on Environment
COS Constellation Operations System
COSMIC Computer Software Management and Information Center (NASA)
COSMO/SkyMed Constellation of Small satellites for the Mediterranean basin Observation
COSPAR Congress for Space Research
COTR Contracting Officer’s Technical Representative
COTS Commercial Off-The Shelf
CPP Cloud Photopolarimeter
CPR Cloud Profiling Radar
CR Correlation Radiometer
CrIMSS Cross-track Infrared and Advanced Technology Microwave Sounders
CrIS Cross-track Infrared Sounder
CRISTA/SPAS Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere/ Shuttle Pallet Satellite
CRP Command Relay Processor
CRSS Canadian Remote Sensing Society
CRYSYS Cryospheric System
CSA Canadian Space Agency
CSIRO Commonwealth Scientific and Industrial Research Organization (Australia)
CSLC California Space Launch Complex
CSMA/CD Carrier-Sense Multiple-Access With Collision Detection
CTGNSS Cyclone Global Navigation Satellite System
CV Cube Visualization
CVA Change Vector Analysis
CZCS Coastal Zone Color Scanner (Nimbus-7)
D Back to top
DAAC Distributed Active Archive Center
DADS Data Archive and Distribution System
DAF Data Archive Facility
DAIS-1 Digital Airborne Imagery System
DAR Data Acquisition Request
DAS Data Analysis Subsystem
DAS Detailed Activity Schedule
DCN Document Change Notice
DCS Data Collection System
DDL Direct Downlink
DEL Data Evaluation Laboratory (GSFC)
DEM Digital Elevation Model
DEM-G Digital Elevation Model - Graphic (coordinates)
DEM-P Digital Elevation Model - Planar (coordinates)
DEMEX Alternate name for the ASTER GDEM Explorer
DGDF Digital Geospatial Data Files
DGPS Differential Global Positioning System; Differential Global Positioning Satellite
DHCP Dynamic Host Configuration Protocol
DHF Data Handling Facility
DIAL Differential Absorption Lidar
DIF Directory Interchange Format
difSAR Differential SAR
DIGCAT Digital Catalogue
DIGEST Digital Geographic Information Exchange Standard
DISC Data and Information Services Center
DLG Digital Line Graph
DLR Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Agency)
DLS Dynamic Limb Sounder
DMO DEM and Orthorectified
DMSP Defense Meteorological Satellite Program
DMZ Demilitarized Zone
DNS Domain Name Service
DOC Department of Commerce
DoD Department of Defense
DOE Department of Energy
DOI Digital Object Identifier
DOPLID Doppler Lidar
DOQ Digital Orthophoto Quadrangle
DORIS Doppler Orbitography and Radiopositioning Integrated By Satellite
DOS Department of State
DPR Dual Precipitation Radar
DRG Digital Raster Graphic
DRSS Data Relay Satellite System
DSCOVR Deep Change Observation Mission
DTED Digital Terrain Elevation Data
DTM Digital Terrain Model
DUE DAAC Unique Extension
DWL Doppler Wind Lidar
DWS Doppler Wind Sensor
E Back to top
E-ISAT EOSDIS Internet Security Assessment Team
E-LIDAR Experimental Lidar
EARLSeL European Association of Remote Sensing Laboratories
EarthCARE Earth Clouds Aerosols and Radiation Explorer
EAS Electrical Accommodation Subsystem (Terra AM-1)
EBnet EOSDIS Backbone network
EBS EOS Broadcast Stations
EC European Community
ECA Earth Central Angle
ECC Earthdata Code Collaborative
ECE Earthdata Collaboration Environment
ECHO EOS Clearing House
ECMP ECS Configuration Management Plan
ECMWF European Center for Medium-range Weather Forecasting
ECOM EOSDIS Communications System
ECRB EOS Configuration Review Board
ECRB EMOS Configuration Review Board
ECRS ESDIS Consolidated Requirements System
ECS EOSDIS Core System
ECSS EOS Common Spacecraft Specification
ECSTVP ECS Test and Verification Procedures
ECSVDB ECS Verification Database
ECT EOS Compatibility Test
ED50 European Datum 1950
EDC Earth Resources Observation and Science (EROS) Data Center (USGS)
EDF ECS Development Facility
EDG EOS Data Gateway (V0 Client – Replacement of B0SOT)
EDGRS Earth Data Gathering and Reporting System
EDHS ECS Data Handling System
EDMA ESDIS Data Model Analysis
EDOCS EOS Data Operations and Communications System
EDOS EOS Data and Operations System
EDS Expedited Data Sets
EDU EDOS Data Unit
EE Earth Explorer
EECF Earthnet ERS-1 Central Facility
EEID EOSDIS External Interface Document
EER External Engineering Review
EETS EOS Electronic Transfer System
EGS EOS Ground Station
EGT EOSDIS Ground Terminal
EGTS EOS Ground Test System
EIN ECS Identification Number
EIONET European Environment Information and Observation Network
EIT EOSDIS Integration Team
EITSO ESDIS Information Technology Security Official
ELANOR Earth Limb And Nadir Operational Retrieval
ELV Expendable Launch Vehicle
EMACC EOS Multiple Applications Control Center
EMD EOSDIS Core System Maintenance and Development
EME ECS Maintenance Environment
EMIS EDOS Management Information System
EMLS EOS Microwave Limb Sounder
EMOC EOSDIS Mission Operations Center
EMOS EOS Mission Operations System
EMOWG EOS Mission Operations Working Group
EMS ESDIS Metrics System
EMSn EOS Mission Support network
ENMC Enterprise Network Management Center
ENSO El Nino Southern Oscillation
ENVISAT Environmental Satellite
EO Earth Observation
EO-1 Earth Orbiter-1
EO-ICWG Earth Observations International Coordination Working Group
EOC EOS Operations Center
EOCC EOS Operations and Control Center
EOIS Earth Observation Information System
EOP EDOS Operation Protocol
EOPS ERBE Operational Processing System (LaRC)
EORC Earth Observation Research Center
EOS Earth Observing System
EOS AERO EOS Aerosol Mission
EOS ALT EOS Altimetry Mission
EOS AM Earth Observing System AM or morning crossing (Terra satellite)
EOS CHEM EOS Chemistry Mission
EOS COLOR EOS Color Mission
EOS PM Earth Observing System PM or afternoon crossing (Aqua satellite)
EOS-G Earth Observing System - Goddard
EOSAT Earth Observing Satellite Company
EOSC EOS Operations Support Capability
EOSDIS Earth Observation System Data and Information System
EOSFDS EOS Flight Data System
EOSIWG EOS Investigator Working Group
EOSP Earth Observing Scanning Polarimeter
EOSPSO EOS Project Science Office
EOSSALT Earth Observing Solid-State Radar Altimeter
EOSSMS EOS Space Measurement System
EOSSRP EOS Scientific Research Program
EOT EDOS Operational Timeline
EOWG ESDIS Operations Working Group
EP Earth Probe
EPDS EMOS Production Data Set
EPG ECS Process Improvement Group
EPGN EOS Polar Ground Network
EPGS EOS Polar Ground Station
EPGSS Earth Observing Polar Ground Station Services
EPOP European Polar-Orbiting Platform
EPTOMS Earth Probe Total Ozone Mapping Spectrometer
ER-2 Earth Resources NASA research aircraft
ERAST Experimental Research Aircraft Sensor Technology Program
ERBE Earth Radiation Budget Experiment
ERBS Earth Radiation Budget Satellite
ERDAS Earth Resources Data Analysis System
ERDET ESDIS Requirements Database Engineering Team
ERG EOSDIS Review Group
EROS Earth Resources Observation System
ERPS EOS Real-Time Processing System
ERS-1 Earth Remote-sensing Satellite-1
ERSAR Earth Resources Synthetic Aperture Radar
ERSDAC Earth Remote Sensing Data Analysis Center
ERTS-1 Earth Resources Technology Satellite –1
ESA European Space Agency
ESAD Earth Science and Applications Data System
ESDD Earth Science Data Directory
ESDIS Earth Science Data and Information System
ESDR Earth Science Data Record
ESDSWG Earth Science Data System Working Group
ESDT Earth Science Data Type
ESE Earth Sciences Enterprise
ESH EDOS Service Header
ESIC Earth Science Information Center
ESID EOSDIS Systems Interface Document
ESIP Federation of Earth Science Information Partners
ESIPS EOSDIS Science Investigator-Led Processing System
ESMES EOS System Management and Engineering Site
ESMO Earth Science Mission Operations
ESMOS Earth Science Mission Operation System
ESMP ECS Schedule Management Plan
ESMR Electronically Scanning Microwave Radiometer
ESN EOSDIS Science Network (ECS) (Replaced By Ebnet)
ESO ESDIS Standards Office
ESOC EOSDIS System and Operations Concept (Document)
ESOD Earth Science On-Line Directory
ESOO ESDIS Science Operations Office
ESQL Earth Science Query Language
ESRIN European Space Research Institute (ESA)
ESSAAC Earth System Science and Applications Advisory Committee
ESSC Earth System Sciences Committee
ESSE EDOS System Support Environment
ESSI Earth and Space Science Informatics
ESSn EOS Science Support network
ESSO Earth Science Support Office
ESSP Earth Science Systems Program
ESST Earth Science Search Tool
ESTB EGNOS System Test Bed
ESTEC European Space Research and Space Technology Centre (ESA)
ESTOL EOS Standard Text and Operation Language
ETM+ Enhanced Thematic Mapper Plus (Landsat 7)
ETRS89 European Terrestrial Reference System 1989
ETS EOS Test System
ETSF EOSDIS Test System Facility
ETTS ECS Trouble Ticketing System
EUMETSAT European Organization for the Exploitation of Meteorological Satellites
EUMS ESDIS User Model Scenario
EVR ECS Verification Report
F Back to top
FAQ Frequently Asked Questions
FCCSET Federal Coordinating Council for Science, Engineering and Technology
FCDAS Fairbanks Command and Data Acquisition Station
FDF Flight Dynamics Facility
FDS Flight Dynamics System
FE Fast Ethernet
FEMA Federal Emergency Management Agency
FEWS Famine Early Warning System
FGDC Federal Geographic Data Committee
FIFE First ISLSCP Field Experiment
FIRE First ISCCP (International Satellite Cloud Climatology Project) Regional Experiment
FIRMS Fire Information for Resource Management System
FM-1 Flight Model 1 (NASA EOS MODIS)
FOIA Freedom Of Information Act
FORTE Fast On-Orbit Recording of Transient Events
FORTRAN FORmula TRANslation 
FOS Flight Operations Segment (ECS)
FOT Flight Operations Team (ECS)
FOV Field of View
FPAR Fraction of photosynthetically active radiation
FRGP Front Range GigaPOP
FSA Federal Space Agency (Russia)
FST Field Support Terminal
FTP File Transfer Protocol
FY Fiscal Year
G Back to top
G3OS Global Terrestrial Observing System
GAC Global Area Coverage (AVHRR)
GALILEO Informal name of GNSS
GATES Geostationary Advanced Technology Environmental System
GB gigabyte (109)
GBAD Ground Based Attitude Determination
gbps Giga bits per second
GCC Goddard Communications Control
GCDC Global Change Data Center
GCDIS Global Change Data and Information System
GCLDC Global Change Landsat Data Collection
GCMD Global Change Master Directory
GCOM Global Change Observation Mission
GCPs Ground Control Points
GDAAC Goddard Distributed Active Archive Center
GDAO Goddard [Space Flight Center] Data Assimilation Office
GDAS NCEP 1-Degree Global Data Assimilation Model
GDEM Global Digital Elevation Model
GDEx Global Data Explorer
GDR Geophysical Data Record (JPL)
GDS Ground Data System
GDS IMS Ground Data System Information Management System
GDT Global DIgital Topography
GEBA Global Energy Budget Archive
GEMI Global Environment Monitoring MSAVI
GENESIS Global Environmental and Ecological Simulation of Interactive Systems
GEO Geosynchronous Earth Orbit
GEOS Goddard Earth Observing System
GEOSS Global Earth Observation System of Systems
Geosat Naval Geodetic Satellite
GeoTIFF Geographic Tagged Image File Format
GeoVIS Geographic Vector Interpretation System (Africover)
GERIS Geophysical Environmental Research Imaging Spectrometer
GES Goddard Earth Sciences
GES DISC GSFC Earth Sciences Data and Information Services Center
GESSEP GSFC Earth Space Science Education Project
GEWEX Global Energy and Water cycle Experiment
GFCC Global Forest Cover Change
GFS Global Forecast System
GGI GPS Geoscience Instrument
GHRC Global Hydrology Resource Center
GIBS Global Imagery Browse Services
GIS Geographical Information System
GISIG Geographical Information Systems International Group
GISS Goddard Institute for Space Studies
GLA Goddard Laboratory for Atmospheres
GLAS Geoscience Laser Altimeter System
GLAST Gamma Ray Large-Area Space Telescope
GLCC Global Land Cover Characterization
GLCN Global Land Cover Network
GLCTS Global Land Cover Test Sites
GLI Global Imager (Japan, ADEOS)
GLIS Global Land Information System
GLL Galileo
GLM Geostationary Meteorological Satellite
GLOBE Global Change Observing Mission
GLONASS Global'naya Navigatsionnaya Sputnikovaya Sistema, Global Orbiting Navigation Satellite System (Russia)
GLOSS Global Observation Surveillance System
GloVIS Global Visualizer
GLRS Geoscience Laser Ranging System
GLRS-A Geoscience Laser Ranging System Altimeter
GLRS-R Geoscience Laser Ranging System Ranger
GMAO Global Modeling and Assimilation Office
GML Geography Markup Language
GMS Geostationary Meteorological Satellite
GMST Greenwich Mean Sidereal Time
GMT Greenwich Mean Time
GMU George Mason University
GN Ground Network
GN&C Guidance, Navigation and Control
GN&CS Guidance, Navigation, and Control Subsystem (Terra AM-1)
GNS GEOnet Names Server
GNSS Globa Navigation Satellite System
GOCE Gravity field and steady-state Ocean Circulation Explorer
GOES Geostationary Operational Environmental Satellite
GOFC Global Observations of Forest Cover (IGOS)
GOLD Global Observation of Land Cover Dynamics
GOME Global Ozone Monitoring Experiment
GOMI Global Ozone Monitoring Instrument
GOMOS Global Ozone Monitoring by Occultation of Stars
GOMR Global Ozone Monitoring Radiometer
GOMS Geostationary Operational Meteorological Satellites
GOPM Goddard Orbital Parameters Message
GOS Geomagnetic Observing System
GPD Goddard Policy Directive (formerly called GMI)
GPG Goddard Procedures and Guidelines
GPI Global Precipitation Index
GPM Global Precipitation Measurement
GPP Gross Primary Productivity
GPR Ground Penetrating Radar
GPROF Goddard PRO Filing algorithm for instantaneous rain retrieval
GPS Global Positioning System
GPSDIS Global Positioning System Data Information System (JPL)
GPSDR Global Positioning System Demonstration Receiver
GPSOS Global Positioning Sensor Occultation System
GPSR Global Positioning Satellite Receiver
GPSSS Global Positioning System Sustaining Support
GRACE Gravity Recovery And Climate Experiment
GRASS Geographic Resource Analysis Support System
GRDC Global Runoff Data Center
GRE Generic Routing Encapsulation
GridFTP Grid File Transfer Protocol
GRS 80 Geodetic Reference System of 1980
GRT Ground Receipt Time
GS [EOS] Ground System
GSDI Global Spatial Data Infrastructure
GSDM Global Spatial Data Model
GSDS Global Spatial Data System
GSFC Goddard Space Flight Center
GSIF Ground Station Interface Facility
GSIP Ground Station Interface Processor
GSLV Geosynchronous Satellite Launch Vehicle
GSM Global System for Mobile Communication
GTDS Goddard Trajectory Determination System
GTE Global Tropospheric Experiment
GTOPO30 A global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds
GTWAY Gateway [for Version 0 interoperability]
GUI Graphical User Interface
GURP Goddard Uncosted Reduction Project
GV Ground Validation
GW Gateway
H Back to top
HALOE Halogen Occultation Experiment
HCR HDF EOS Configuration Record
HDF Hierarchical Data Format
HDF-EOS Hierarchical Data Format - Earth Observing System
HDDS Hazards Data Distribution System
HEG HDF-EOS to GeoTIFF Conversion Tool
HEO High Earth Orbit
HEW HDF-EOS WEB-based subsetter
HGML Hyper Graphics Markup Language (Graphical Alternative to HTML)
HIMSS High-Resolution Microwave Spectrometer Sounder (Replaced By MIMR)
HIRDLS High Resolution Dynamics Limb Sounder
HIRIS High-Resolution Imaging Spectrometer
HIRRLS High-Resolution Research Limb Sounder
HIRS High-Resolution Infrared Sounder
HIS High-Resolution Interferometer Sounder
HPGN High-Precision Geodetic Network
HRDFEP High Rate Demodulator Front End Processor
HRG High-Resolution Geometry (SPOT)
HRPT High-Resolution Picture Transmission (AVHRR)
HRV Haute Résolution dans le Visible (SPOT)
HRVIR High Resolution Visible Infrared (scanner)
HSB Humidity Sounder - Brazil (Derivative of AMSU-B, Replacing MHS)
HSI Hue, Saturation, Intensity – Hyperspectral Imaging Instrument
HTML Hypertext Markup Language
HTTP Hypertext Transport Protocol
HYDICE Hyperspectral Digital Imagery Collection Experiment
HYMAP Airborne Hyperspectral Imaging
I Back to top
I&CLC2000 Image and CORINE Land Cover 2000
I-SIPS ICESat Science Investigator-led Processing System
IASI Infrared Atmospheric Sounding Interferometer
IAU International Astronomical Union
IBM International Business Machines
ICARTT International Consortium for Atmospheric Research on Transport and Transformation
ICC Instrument Control Center
ICD Interface Control Document
ICESat Ice, Cloud and Land Elevation Satellite
ICF Instrument Control Facility (ECS)
ICMP Internet Control Message Protocol
ICSU International Council of Scientific Unions
IDL Interactive Data Language
IEEE Institute of Electrical and Electronics Engineers
IELV Intermediate Expendable Launch Vehicle
IEOS International Earth Observing System
IERS International Earth Rotation Service
IFOV Instantaneous Field of View
IFREMER Instiut Francais de Recherche pour l'Exploration de la Mer
IFSARE Inter-ferometric Synthetic Aperture Radar for Elevation
IGAC International Global Atmospheric Chemistry Program of the IGBP
IGAP International Global Aerosol Program
IGARSS IEEE International Geoscience and Remote Sensing Symposium
IGBP International Geosphere - Biosphere Programme
International Geosphere–Biosphere Programme – Data and
Information System
IGMP Internet Group Multicast Protocol
IGN International Geodetic Network
IGOS Integrated Global Observing Strategy
IGS ICEsat Ground System
IGST ICESat Ground System Test
IKAR-N scanning microwave radiometer system
IKAR-P nadir microwave radiometer
ILAS Improved Limb Atmospheric Spectrometer
IMG Interferometric Monitor for Greenhouse Gases
IMOC ICESat Mission Operations Center
IMS Information Management System
INPE Instituto Nacional de Pesquisas Espaciais (Brasil)
InSAR Interferometric Synthetic Aperture Radar
INSAT Indian National Satellite
INSPIRE Infrastructure of Spatial Information in the European Community
Intelsat International Telecommunications Satellite
IOC ICESat Orbit Control Software
IONET Internet Protocol Operational Network
IOT Instrument Operations Team
IP Internet Protocol
IPCC Intergovernmental Panel on Climate Change
IPD Information Processing Division (GSFC)
IPNOC Internet Protocol Network Operations Center
IPOC International Partner Operations Center
IPOMS International Polar Orbiting Meteorological Satellite Committee
IR Infrared 
IR Interim Release
IR&D Independent Research and Development
IR-RAD Infrared Radiometer
IRAD Independent Research And Development
IRCD Interface Requirements Control Document
IRD Interface Requirements Document
IRTS Infrared Temperature Sounder
ISAMS Improved Stratospheric And Mesospheric Sounder
ISAS Institute of Space and Astronautical Science
ISCCP International Satellite Cloud Climatology Project
ISDN Integrated Systems Digital Network
ISF Instrument Support Facility
ISIPS ICEsat Science Investigator-Led Processing System
ISIR Infrared Spectral Imaging Radiometer
ISLSCP International Satellite Land Surface Climatology Project
ISO International Organization for Standardization
ISP Internet Service Provider
ISPRS International Society for Photogrammetry and Remote Sensing
ISRO Indian Space Research Organisation
ISS International Space Station
ISSN International Standard Serial Number
IST Instrument Support Terminal
ITIR Intermediate Thermal Infrared Radiometer
ITRF International Terrestrial Reference Frame
ITRS International Terrestrial Rotation Service
IWG Investigator Working Group
IWGDD Interagency Working Group on Digital Data
IWGDMGC Interagency Working Group on Data Management for Global Change
J Back to top
JAVA Joint Academic Virtual Application
JAXA Japan Aerospace Exploration Agency
JEOC Japan's Earth Observation Center
JEOS Japanese Earth Observing System
JERS-1 Japanese Earth Remote-sensing Satellite-1
JGOFS Joint Global Ocean Flux Study
JMA Japan Meteorological Agency
JPL Jet Propulsion Laboratory
JPLAIRSAR JPL Airborne Synthetic Aperture Radar
JPOP Japanese Polar-Orbiting Platform
JPSS Joint Polar Satellite System
JRC Joint Research Centre (Italy)
JRC CEO European Commission Joint Research Centre
JSC Johnson Space Center
K Back to top
K Kelvin
KARI Korea Aerospace Research Institute
KB kilobyte (103)
KML Keyhole Markup Language
KNMI Royal Netherlands Meteorological Institute
KOMPSAT Korea Multipurpose Satellite
KSC Kennedy Space Center
L Back to top
L0 Level 0 (zero)
L0R Level 0 Release
L1 Level 1
L1G Level 1 Geometrically Corrected
L1R Level 1 Radiometrically Corrected
L2 Level 2
L3 Level 3
L4 Level 4
LAADS Level 1 and Atmosphere Archive and Distribution System
LAC Local Area Coverage
LADAR Laser Detection and Ranging
LAGEOS Laser Geodynamics Satellite
LAI Leaf area index
LAMP Low Altitude Mapping Photogrammetry
LAMPS Laser-scan Automated Map Production System
LAN Local Area Network
LANCE Land, Atmosphere Near real-time Capability for EOS (Earth Observing System)
LANL Los Alamos National Lab
Landsat Land Remote-Sensing Satellite
LaRC ASDC Langley Research Center Atmospheric Science Data Center
LaRCNET Langley Research Center Network
LARSE Laboratory for Applications of Remote Sensing in Ecology
LASE Lidar Atmospheric Sensing Experiment
Laser Light Amplification by Stimulated Emission of Radiation
LaTIS Langley Research Center's TRMM Information System
LBS Location-Based Services
LCCS Land Cover Classification System
LDHF Landsat-7 Data Handling Facility
LDOPE Land Data Operational Product Evaluation
LDOS Landsat Data and Operations System
LEO Low Earth Orbit
LERTS Laboratoire d'Etudes et de Recherches en Teledetedion Spatiale
LIDAR LIght Detection And Ranging instrument
LIDQA Landsat Image Data Quality and Analysis
LIGHTSAR Lightweight Synthetic Aperture Radar
LIMS Limb Infrared Monitor of the Stratosphere
LIS Lightning Imaging Sensor
LITE Lidar-in-space Technology Experiment
LLC Logical Link Control
LMD Laboratoire de Meteorologie Dynamique
LOGSWG Landsat Operations Ground Segment Working Group
LOS Loss Of Signal
LP DAAC Land Processes DAAC
LR Laser Retroreflector
LRPT Low-Resolution Picture Transmission
LRRL Low Rate Return Link
LRS Landsat Recorder System
LSPIM Land-Surface Processes and Interactions Mission
LSR Land Surface Reflectance
LTA Long Term Archive
LUT Look Up Table
LW Longwave radiation
LWIR Long-Wave Infrared (spectral region)
LZP Level Zero Processing
LZPF Level Zero Processing Facility
LZPS Level Zero Processing System
LZW Lempel Ziv Welch
M Back to top
MAGSAT Magnetic Field (Magnetometer) Satellite
ManLan Manhattan Landing (high performance exchange point in New York City)
MAP Map Accuracy Programme (Africover)
MAPS Measurement of Atmospheric Pollution from Satellites
MAPSAT Mapping Satellite
MAS MODIS Airborne Simulator
MASTER MODIS/ASTER Airborne Simulator
Matlab Matrix laboratory
MAX Mid-Atlantic Crossroads
MB megabyte
mb millibar
MBLA Multi-Beam Laser Altimeter
MCIP Mission Critical IP
MCP Meteorological Communications Package
MCST MODIS Characterization Support Team (EOS)
MEaSUREs Making Earth System data records for Use in Research Environments
MEBS MODIS Emergency Backup System (EOS)
MEIS Multispectral Electrooptical Imaging Sensor
MELV Medium Expendable Launch Vehicle
MEO Middle Earth Orbit (Satellite)
MERES Mineral and Energy Resources Exploration Satellite (Japan)
MERIS Medium-Resolution Imaging Spectrometer (ESA Envisat)
MESSR Multispectrum Electronic Self-Scanning Radiometer
METEOSAT Geosynchronous Meteorology Satellite (ESA)
METI Ministry of Economy Trade and Industry (Formerly Known As MITI)
METOP Meteorological Operational Weather Satellite
METSAT Meteorological Satellite
METSOAT European Weather Satellite
MFOV Medium Field of View
MGRS Military Grid Reference System
MHS Microwave Humidity Sounder (EOS)
MHz MegaHertz
MIAS Multispectral Image Analysis System
MIDAS Multispectral Interactive Data Analysis System
MIMR Multifrequency Imaging Microwave Radiometer
MIPAS Michelson Interferometer for Passive Atmospheric Sounding
MIR Multispectral Imaging Radiometer
MIRAS Microwave Imaging Radiometer with Aperture Synthesis (ESA)
MIRIAM/DOPI Mir Infrared Atmospheric Measurements/Double Pendulum Interferometer
MISR Multi-angle Imaging SpectroRadiometer (EOS)
MITI Ministry of International Trade and Industry
MIVIS Multispectral Infrared and Visible Imaging Spectrometer
MLS Microwave Limb Sounder
MMR Modular Multi-Band Radiometer
MO&DSD Mission Operations and Data Systems Directorate (GSFC Code 500)
MOA Memorandum Of Agreement
MOC Mission Operations Center
MODAPS MODIS Adaptive Processing System
MODExtract MODIS Data Pool Extraction Tool
MODIS Moderate Resolution Imaging Spectroradiometer (EOS)
MODIS-N Moderate Resolution Imaging Spectroradiometer - Nadir
MODLAND MODIS Land Discipline Group (EOS)
MODS Moderate Resolution Imaging Spectrometer
MOMS Modular Optoelectric Multispectral Scanner
MOP Meteosat Operational Programme
MOPITT Measurements of Pollution in the Troposphere
MOS Marine Observation Satellite
MOSPF Multicast Open Shortest Path First
MOU Memorandum of Understanding
MP-MP Multipoint-Multipoint Systems
MPPP Multi-Link Point-to-Point Protocol
MPRD Modified Proportional Radial Displacement
MPS Mission Planning System (ASF)
mrad microradians
MRIR Medium Resolution Infrared Radiometer (Nimbus)
MrSID Multiresolution Seamless Image Database
MRT MODIS Reprojection Tool
MRTSwatch MODIS Reprojection Tool for Swath
MRTWeb MODIS Reprojection Tool for the Web
ms millisecond
MSAS MTSAT Satellite-Based Augmentation Satellite
MSAVI Modified Soil Adjusted Vegetation Index
MSC Multispectral Camera
MSFC Marshall Space Flight Center
MSG Meteosat Second Generation (ESA)
MSL Mean Sea Level
MSMR Multi-frequency Scanning Microwave Radiometer
MSR Microwave Scanning Radiometer
MSS Multi-Spectral Scanner (Landsat 1-5)
MSU Microwave Sounding Unit
MSU-SK Multispectral Optical Scanner
MTF Modulation Transfer Function
MTS Meteoroid Technology Satellite (NASA)
MTSAT Multi-functional Transport Satellite (Japan)
MTTR Mean Time To Recover
MTTRS Mean Time To Restore Service
N Back to top
NAALSED North American ASTER Land Surface Emissivity Database
NACP North American Carbon Program
NAD North American Datum
NAL National Aerospace Laboratory of Japan
NALC North American Land Characterization
NAM NASA Advisory Manager
NAPP National Aerial Photography Program
NARA National Archives and Records Administration
NARSA National Advanced Remote Sensing Applications Program
NARSTO North American Research Strategy for Tropospheric Ozone
NAS National Academy of Sciences
NAS NASA Advisory Council
NASA National Aeronautics and Space Administration
NASCOM NASA Communications Network
NASCOP NASA Communications Operating Procedures
NASDA National Space Development Agency (Japan)
NASIRC NASA Automated Systems Incident Response Capabilities
NASTRAN NASA Structural Analysis (Program)
NAVSTAR Navigation Satellite Timing and Ranging Global Positioning System
NBAR Nadir BRDF Adjusted Reflectance
NBIS Northern Biosphere Information System
NBSM National Bureau of Surveying and Mapping (China)
NCAR National Center for Atmospheric Research
NCC National Cartographic Centre (Iran)
NCDC National Climatic Data Center (NOAA)
NCDS NASA Climate Data System
NCEP National Center for Environmental Prediction (NOAA)
NCEP AWC National Center for Environmental Prediction Air Weather Center
NCF NSSDC Computer Facility
NCGIA National Center for Geographic Information and Analysis
NCSA National Center for Supercomputer Applications
NCSC National Computer Security Center
NCSL National Computer Systems Laboratory
NDCS National Digital Cartographic Standards
NDMC National Drought Mitigation Center
NDPR NASA Defense Purchase Request
NDVI Normalized Difference Vegetation Index
NED National Elevation Dataset
NEPP NASA Electronic Parts and Packaging
NERC National Environmental Research Centre (UK)
NESDD NOAA Earth Science Data Directory
NESDIS National Environmental Satellite, Data, and Information Service (NOAA)
NET National Environmental Satellite, Data, and Information Service
netCDF Network Common Data Format
NewDISS New Data and Information Systems and Services
NEWS NOAA’s Earth Watch Service
NEXRAD Next Generation Weather Radar
NGDC National Geophysical Data Center (NOAA); National Geospatial Data Clearinghouse
NGDF National Geospatial Data Files
NGIX Next Generation Internet Exchange
NGMA National Geoscience Mapping Agency (Australia)
NGMBD National Geologic Map Database (USGS)
NGT NASA Ground Terminal
NGWIC National Ground Water Information Center
NHAP National High Altitude Photography
NIAC NASA Institute for Advanced Concepts
NIC NASA Information Center
NICMOS Near-Infrared Camera and Multi-Object Spectrometer
NIMBUS NASA Meteorological Satellites (1 through 7)
NIR Near Infrared (spectral region)
NISE Near Real-Time SSM/I EASE-Grid Daily Global Ice Concentration and Snow Extent
NISN NASA Integrated Services Network
NISS NASA Institutional Support Systems
NITRD Networking and Information Technology Research and Development
NIX NASA Image Exchange
NLAPS National Landsat Archive Production System (USGS)
NLCD National Land Cover Dataset (USGS)
NLDC NASA Landsat Data Collection
NLOS Not Line of Sight
NMAS National Map Accuracy Standards
NMC National Meteorological Center (NOAA)
NMD NASA Master Directory
NMI NASA Management Instruction
NMOS Network and Mission Operations Support (NASA Program)
NMOS NASA Management and Operations Support
NMP New Millenium Program
NNSS Navy Navigational Satellite System
NO2 Nitrogen Dioxide
NOAA National Oceanic and Atmospheric Administration
NOAA SAA NOAA Satellite Active Archive
NOARL Naval Oceanographic and Atmospheric Research Lab
NOC Network Operations Center
NODC National Oceanographic Data Center (NOAA)
NODS NASA Ocean Data System
NODIS NSSDC Online Data and Information Service
NOMC Network Operations Management Center
NOSIE NODC Ocean Science Information Exchange
NOSS National Oceanic Satellite System
NOX Northern Crossroads
NPAS Network Planning and Analysis System
NPG NASA Procedure and Guidelines
NPOESS National Polar-orbiting Operational Environmental Satellite System
NPOP-1 NASA Polar Orbiting Platform (One)
NPP NPOESS Preparatory Project
NPR NASA Procedural Requirements
NRA NASA Research Announcement
NRC National Research Council
NRDN NOAA Radar Data Network
NREN National Research and Education Network
NRL Naval Research Laboratory
NRSA National Remote Sensing Agency (India)
NRSC National Remote Sensing Centre (UK)
NRSCC National Remote Sensing Centre of China
NRT Near Real-Time
NRTP Near Real-Time Processor
NRTPE Near Real-Time Processing Effort
NRTS Near Real-Time System
NSAP Network Services Access Point
NSAU National Space Agency of Ukraine
NSC Norwegian Space Centre
NSCAT NASA Scatterometer
NSDS NASA Software Documentation Standard
NSF National Science Foundation
NSIDC National Snow and Ice Data Center 
NSM Network Service Manager
NSN NASA Science Network
NSP Korean National Space Development Plan
NSpC National Space Council
NSPD National Space Policy Directive
NSR NISN Service Request
NSRS National Spatial Reference System (NOAA)
NSSDC National Space Science Data Center
NSTC National Space and Technology Council
NSTR NASA Standard Tape Recorder
NTIS National Technical Information Service
NTS National Topographic Series (Canada); National Topographic System (Canada); Navigation Technology Satellite
NTTF NASA Test and Training Facility
NVAP NASA Water Vapor Project
NVCS National Vegetation Classification Standard
NWP Numerical Weather Prediction
NWS National Weather Service (NOAA)
NWS-HRL NWS - Hydrologic Research Laboratory
NWS-RFC NWS - Regional Forecast Center
NWS-RFO NWS - River Forecast Office
O Back to top
O3 Ozone
OBPG Ocean Biology Processing Group 
OCDPS Ocean Color Data Processing System
OCM Ocean Colour Monitor
OCO Orbiting Carbon Observatory
OCR Optical Character Recognition; Optical Character Reader
OCTS Ocean Color and Temperature Scanner (Japan, ADEOS)
ODB Orbit Determination Beacon
ODL Object Description Language
ODS One Day Schedule
OEC Optical-Electronic Camera
OGC Open Geospatial Consortium
OLS Optical Line Scanner
OMB Office of Management and Budget
OMI Ozone Monitoring Instrument
OMIS Optical Multichannel Imaging Sensor (NPOESS)
OMPS Ozone Mapper/Profiler Suite
ONVS Ozone Near-real-time and Very-fast-delivery System
ORFEO Optical and Radar Federated Earth Observation
ORNL Oak Ridge National Laboratory
ORR Operational Readiness Review
OSC Orbital Sciences Corporation
OSCAR Online Satellite Catalogue and Request System (NOAA)
OSDPD Office of Space Data Processing and Distribution (NOAA)
OSF Observation Schedule File
OSMI Ocean Scanning Multispectral Imager
OSPF Open Shortest Path First (Routing Protocol)
OSTA Office of Space and Terrestrial Applications
OSTM Ocean Surface Topography Mission
OSTP Office of Science and Technology Policy
<strong id="ed-acronym-p" "="">P Back to top
PACOR Packet Processor
PALSAR Phased-Array L-band SAR (Japan)
PB petabyte (1015)
PDR Product Delivery Record
PDS Production Data Set
PE&RS Photogrammetric Engineering & Remote Sensing (journal)
PFM Proto-Flight Model
PGE Product Generation Exectuable
PGS Product Generation System
PGS Polar Ground System
PGS Product Generation System
PHD Polar HDF-EOS Data Imaging and Subsetting
PI Principal Investigator
PIM Protocol Independent Multicast
PIP Premium Internet Protocol
PL Public Law
PLDS Pilot Land Data System
P-MP Point-MultiPoint systems
PMR Pressure-Modulated Radiometer
PNNL Pacific Northwest National Laboratory
POAM Polar Ozone and Aerosols Mission
POC Point Of Contact
PO DAAC Physical Oceanography Distribution Active Archive Center 
POEM Polar-Orbit Earth Observation Mission
POEMS Positron Electron Magnet Spectrometer
POES Polar-Orbiting Operational Environmental Satellite
POGO Polar-Orbiting Geophysical Observatory
POLARIS Photochemistry of Ozone Loss in the Arctic Region In Summer
POLDER Polarization and Directionality of Earth's Reflectances (CNES, ADEOS)
POLES Polar Exchange at the Sea Surface
POP Program Operating Plan
POS Product Order Status
PP Principal Point
PPR Photopolarimeter Radiometer
PPS Precipitation Processing System
PR Precipitation Radar (TRMM)
PRARE Precise Range and Range Rate Equipment
PRAREE Precise Range and Range Rate Equipment - Extended
PRIRODA Nature Instrument Model on Russian MIR Station
PRISM Panchromatic Remote Sensing Instrument for Stereo Mapping (Japan); Processes Research by an Imaging Space Mission
PSA Product Specific Attributes
PSAT Predicted Site Acquisition Table
PSLA Project Service Level Agreement
PSLV Polar Satellite Launch Vehicle
PTH Performance Test Host
PU Processing Unit
PV Precision Visuals
PVI Perpendicular Vegetation Index
Q Back to top
QA Quality Assurance
QC Quality Control
QOS Quality of Service
QUASAR Quality Assurance and Stability Reference
R Back to top
RA Radar Altimeter
RADAR RAdio Direction And Ranging
RADARSAT Radar Satellite
RAMP Radarsat Antarctic Mapping Program
RAR Real Aperture Radar
RASA Russia Aviation-Space Agency
RASCAL Raster Scanning Airborne Laser
RBD Rate Buffered Data
RCIP Real-Time Critical IP
RCSSMRS Regional Center for Services in Surveying, Mapping and Remote Sensing
REYNSST NCEP Reynolds Blended SST Weekly Product
RF Radio Frequency
RFC Request For Comment
RGB Red-Green-Blue
RGS Receiving Ground Station (ASF)
RINEX Receiver Independent Exchange (GPS data format)
RIP Router Information Protocol
RIS Raster Image Set
RMS Requirements Management System
RMSE Root-Mean-Square Error
RNSS Radio Navigation Satellite Service
ROA Remotely Operated Aircraft
ROM Rough Order of Magnitude
ROM Read-Only Memory
ROSA Radio Occultation for Sounding the Atmosphere
ROSHYDROMET Russian Federal Service for Hydrometeorology and Environmental Monitoring
ROSIS Reflective Optics System Imaging Spectrometer
rpm revolutions per minute
RSA Russian Space Agency Rosaviakosmos
RSAC Remote Sensing Applications Center
RSG Remote Sensing Group (UAZ)
RSI RADARSAT International
RSMAS Rosenstiel School of Marine and Atmospheric Sciences
RSS Remote Sensing Society (UK)
RST Remote Science Terminal
RT Real-Time
RTADS Real-Time Attitude Determination System
RTCM Radio Technical Commission for Maritime (format)
RTCP Real-Time Control Protocol
RTCS Real-Time Command Sequence
RTP Real-Time Positioning
RTS Real-Time System
RTSP Real-Time Streaming Protocol
RTSS Real-Time System Simulator
RTSW Real Time Solar Wind
S Back to top
S&R Search and Rescue
S4PM Simple, Scalable, Script-based, Science Processor for Measurements
S-GCOS Space-Based Global Change Observation System
S-PDS Session-based Production Data Sets
SAFIRE Spectroscopy of the Atmosphere using Far Infrared Emission
SAGE Stratospheric Aerosol and Gas Experiment
SAM Stratospheric Aerosol Measurement
SAMS Stratospheric And Mesospheric Sounder
SAP Service Access Point
SAR Synthetic Aperture Radar
SARSAT SAR Satellite
SAS-C Scientific Applications Satellite - C
SASS Seasat-A Satellite Scatterometer System
SATC Software Assurance Technology Center (GSFC)
SAVE Southern African Validation of EOS
SAVI Soil-Adjusted Vegetation Index
SB-PDS Session-Based Production Data Sets
SBUV Solar Backscatter Ultraviolet
ScaLARS Scanning Laser Altitude and Reflectance Sensor (Germany)
SCANSAR Scanning Synthetic Aperture Radar
SCANSCAT Scatterometer (Dual Pencil-Beam), Advanced Scatterometer for Studies in Meteorology and Oceanography
SCAR-A Smoke/Sulfates, Clouds and Radiation - America
SCAR-B Smoke/Sulfates, Clouds and Radiation - Brazil
SCARAB Scanner for the Radiation Budget
SCF Science Computing Facility
SCIAMACHY Scanning Imaging Absorption Spectrometer for Atmospheric Cartography
SCP Secure Copy
SDAC Satellite Data Analysis Center
SDCS SAR Data Catalog System
SDOC Science Data Operations Center
SDPF Science Data Processing Facility
SDPS Science Data Processing Segment (ECS)
SDPS Science Data Processing System
SDS Scientific Data Set
SDSC San Diego Supercomputer Center
SDSD Satellite Data Services Division
SE&I System Engineering and Integration
SE/RC System Evolution/Release C (ECS)
SeaPAC SeaWinds Project (JPL)
SEASAR Sea Synthetic Aperture Radar
SEASAT Sea Satellite
SEASTAR Spacecraft Flying SeaWiFS
SeaWiFS Sea-Viewing Wide-Field Sensor
SeaWinds Seawinds Scatterometer (for Flight on ADEOS II)
SEDAC Socio-Economic Data and Applications Center 
SEE Sustaining Engineering Facility (EDOS Component)
SEEDS Strategic Evolution of ESE Data Systems (formerly NewDISS)
SEF Sustaining Engineering Facility (EDOS)
SELV Small Expendable Launch Vehicle
SEM Space Environment Monitor
SESPD Space and Earth Science Programs Directorate 
SEVIRI Spinning Enhanced Visible and Infrared Imager (ESA)
SFE Science Formatting Equipment (Terra AM-1)
SFSI Shortwave-Infrared Full Spectrum Imager (Canada)
SFTP Secure Shell File Transfer Protocol
SGI Silicon Graphics - Iris
SGML Standard Generalized Markup Language
SGS Svalbard Ground Station (Norway)
SI Spatial Information
SIASGE Sistema Italo-Argentino de Satélites protects Gestión de Emergencias
SIG Special Interest Group
SIM Spectral Irradiance Monitor
SIMBIOS Sensor Intercomparison and Merger for Biological and Interdisciplinary Oceanic Studies
SIMIP Sea Ice Model Intercomparison Project
SIMMS Scalable Integrated Multi-Mission Simulator
SIN Sinusoidal
SIP Standard Internet Protocol
SIPS Science Investigator-led Processing System
SIR-C Shuttle Imaging Radar-C
SIR-C/X-SAR Spaceborne Imaging Radar-C/X-Band SAR
SIRS Satellite Infrared Spectrometer
SIS Spatial Information System
SISS Software Implementation Support System
SIT System Integration Test
SKS Svalbard Kongsberg Ground Station
SLA Service Level Agreement
SLAR Side-Looking Airborne Radar
SLR Satellite Laser Ranging
SMAP Soil Moisture Active Passive
SMC System Management Center
SMD Science Mission Directorate
SMIL Synchronized Multimedia Integration Language
SMM Solar Maximum Mission
SMMR Scanning Multispectral Microwave Radiometer
SMOS Soil Moisture and Ocean Salinity
SMS Structures and Mechanisms Subsystem (Terra AM-1)
SMS Synchronous Meteorological Satellite
SMS/GOES Synchronous Meteorological Satellite/Geostationary
SMTP Simple Mail Transport Protocol
SN Space Network
SNMP Simple Network Management Protocol
SNOW-I Search 'N Order Web Interface
SNPP Suomi National Polar-orbiting Partnership
SNR Signal-to-Noise Ratio
SNSB Swedish National Space Board
SOCC Science Operations Control Center
SOLSPEC Solar Spectrum (Space Shuttle instrument from Europe)
SOLSTICE Solar Stellar Irradiance Comparison Experiment
SOM Space Oblique Mercator (projection); Spatial Object Manager
SONAR Sound Navigation and Ranging
SONET Synchronous Optical Network
SOP Standard Operating Procedure
SORCE Solar Radiation and Climate Experiment
SOX Southern Crossroads
SOW Statement of Work
SPANS Simple Protocol for Asynchronous Transfer Mode Network Signaling
SPDB Science Processing Database
SPIE Society of Photo-optical Instrumentation Engineers
SPIN-2 Space Information-2 Meter Data (Russian Space Agency)
SPOT Systeme Pour l'Observation de la Terre
SPoRT Short-term Prediction Research and Transition Center
SPS SAR Processing System (ASF)
SPS Science Processing System
SRB Surface Radiation Budget
SRL Shuttle Research Laboratory
SROM Spectro-radiometer for Ocean Monitoring
SRS/GPS Stellar Reference System/Global Positioning System
SRTM Shuttle Radar Topology Mission
SSA Solid State Altimeter (See EOS ALT)
SSALT Solid-State Altimeter
SSB Space Studies Board
SSBUV Shuttle Solar Backscatter Ultraviolet
SSC Stennis Space Center
SSE Science System Element
SSE Surface Solar Energy
SSEC Space Science and Engineering Center (University of Wisconsin)
SSM/I Special Sensor Microwave/Imager
SSI&T Science Software Integration and Test
SSL Secure Sockets Layer
SSM/I Special Sensor Microwave/Imager
SSM/T Special Sensor Microwave/Temperature Sounder
SSO Single Sign-On
SST Sea Surface Temperature
SSU Stratospheric Sounding Unit
STA Science and Technology Agency
STDM Spacecraft Tracking and Data Network
STGT Second TDRSS Ground Terminal
STIKSCAT Stick Scatterometer
STS Short Term Schedule
STS Space Transport System
SUCCESS SUbsonic aircraft Contrail and Clouds Effects Special Study
SUDS Science, User and Data Services
SW Shortwave radiation
SWBD Shuttle Radar Topography Mission (SRTM) Water Body Dataset
SWG Science Working Group
SWIR Shortwave infrared (TM5 and TM7 spectral region)
SWIRLS Stratospheric Wind Infrared Limb Sounder
T Back to top
T&C Telemetry and Command
TT&C Tracking, Telemetry and Command
TARFOX Tropospheric Aerosol Radiative Forcing Observational Experiment
TB terabyte (1012)
TBD To Be Determined
TCP Transport Control Protocol
TCP/IP Transmission Control Protocol/Internet Protocol
TDOPF Time Dependent Operational Parameter Fire
TDRS Tracking and Data Relay Satellite
TDRSS Tracking and Data Relay Satellite System
TEDA Technical Data Acquisition Equipment (ADEOS)
TES Tropospheric Emission Spectrometer
TGD Thermal Infrared
TGDDIS Trace Gas Dynamics Data Information System
THORpex THe Observing-system Research and predictability experiment
THREDDS THematic Realtime Environmental Distributed Data Services
TIGER Thermal Infrared Ground Emission Radiometer
TIM TRMM Microwave Imager
TIMS Therms Infrared Multispectral Scanner
TIN Triangular Irregular Network
TIR Thermal Infrared
TIROS Television and Infrared Operational Satellite
TIRS Thermal Infrared Scanner
TIS Topographic Information Systems
TISF Tape Inventory Sequential Files (GSFC)
TLS Terrestrial Laser Scanning
TLSCF Team Led Science Computing Facility
TM Thematic Mapper (Landsat 5)
TMI TRMM Microwave Instrument (Japan)
TWMS Tile Web Map Service
TMR TOPEX Microwave Radiometer
TOAST Total Ozone Analysis using SBUV/2 and TOVS
TOGA Tropical Ocean Global Atmosphere
TOMS Total Ozone Mapping Spectrometer
TOPEX Ocean Topography Experiment
TOPSAR Topographic Synthetic Aperture Radar
TOVS TIROS Operational Vertical Sounder
TRACER Tropospheric Radiometer for Atmospheric Chemistry and Environmental Research
TRMM Tropical Rainfall Measuring Mission
TRUST TDRSS Resource User Support Terminal
TSAVI Transformed Soil Adjusted Vegetation Index
TSDIS TRMM Science Data and Information System
TSS TRMM Support System
TSTOL TRMM System Test and Operations Language
TSU TRMM Science User
TURFTS TDRSS User Radio Frequency Test Set
U Back to top
UAF University of Alaska-Fairbanks
UARP Upper Atmosphere Research Program
UARS Upper Atmosphere Research Satellite
UAV Unmanned Aerial Vehicle
UCAR University Corporation for Atmospheric Research
UCL University College, London
UDP User Datagram Protocol
UDP/IP User Datagram Protocol/Internet Protocol
UHF Ultra High Frequency
UIUC University of Illinois at Urbana-Champaign
um micrometer
UMBC University of Maryland, Baltimore County
UNOOSA United Nations Office of Outer Space Affairs
URI Uniform Resource Identifier
URL Uniform Resource Locator
URS User Registration System (EOSDIS)
UserDIS User Data Information System
USDA United State Department of Agriculture
USGCRP United States Global Change Research Program
USGS United States Geological Survey
USNO United States Naval Observatory
USNVC United States National Vegetation Classification
USO Ultra-Stable Oscillator
UTC Universal Time, Coordinated
UTCF Universal Time Correlation Factor
UTDF Universal Tracking Data Format
UTM Universal Transverse Mercator
UV Ultraviolet
UWG User Working Group
V Back to top
V0 Version 0
VAS VISSR Atmospheric Sounder
VCF Vegetation Continuous Fields
VCL Vegetation Canopy Lidar
VGT SPOT-4 VEGETATION instrument (France)
VHRPC Very High Resolution Panchromatic Camera
VHRR Very High Resolution Radiometer
VI Vegetation Index
VID Vegetation Index Differencing
VIIRS Visible Infrared Imaging Radiometer Suite
VIP Vegetation Index Products
VIRGO Variability of Solar Irradiance and Gravity Oscillations
VIRR Visible and Infrared Radiometer
VIRS Visible Infrared Scanner
VIRSR Visible Infrared Scanning Radiometer
VIS Visible (spectral region)
VIS-UV Visible/Ultraviolet Spectrometer
VIS/IR Visible/Infrared
VISSR Visible/Infrared Spin-Scan Radiometer (GOES)
VML Vector Markup Language
VMM VISSR Multiplexor/Modulator
VNIR Visible and Near-infrared (spectral region)
VOLCAM Volcanic Ash Mission
VPN Virtual Private Network
VRML Virtual Reality Modeling Language
VSAR Variable Synthetic Aperture Radar
VTIR Visible and Thermal Infrared Radiometer
W Back to top
WAN Wide Area Network
WCRP World Climate Research Program
WCS Web Coverage Service
WDVI Weighted Difference Vegetation Index
WELD Web Enabled Landsat Data
Wetnet Network for Distribution and Joint Analysis of SSM/I (MSFC)
WFF Wallops Flight Facility
WFOV Wide Field Of View
WG Working Group
WGCV Working Group on Calibration and Validation (CEOS)
WGD Working Group on Data (CEOS)
WGISS Working Group on Information Systems and Services
WGS Wallops Ground System
WGS 84 World Geodetic System 1984
WHOI Woods Hole Oceanographic Institution
WiFS Wide Field-of-view-Sensor
WiMAX Worldwide Interoperability for Microwave Access 
WIST Warehouse Inventory Search Tool
WMO World Meteorological Organization
WMS Web Map Service
WMTS Web Map Tile Service
WOCE World Ocean Circulation Experiment
WOTIS Wallops Orbital Tracking Information System
WSC White Sands Complex
WSGT White Sands Ground Terminal
WSMC Western Space and Missile Center
WTS Wallops Tracking Station
WWW World Wide Web
WYSIWYG What You See Is What You Get
X Back to top
X-SAR X-Band Synthetic Aperture Radar
xDLS eXtensible Distance Learning System
XHTML eXtensible Hyper Text Markup Language
XML eXtensible Markup Language
XP Exchange Point
XPS XUV Photometer System
XSL eXtensible Stylesheet Language
XSLT eXtensible Stylesheet Language Transformation
Y Back to top
YIBS-CEO Yale Institute of Biospheric Studies - Center of Earth Observation
YTD Year To Date
Z Back to top

Page Last Updated: Apr 25, 2019 at 2:08 PM EDT