List of Abbreviations

This is a list of the most common abbreviations used on the ROM SAF webpage. For a more complete list we refer you to Eumetsat's list of acronyms and ESA's Metop Glossary List.

Numeric | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | Z |

1D-VarOne-dimensional variational analysis
3D-VarThree-dimensional variational analysis
4D-VarFour-dimensional variational analysis
A/SAnti-Spoofing (a mode that the GPS satellites are usually in, which degrades the accuracy of pseudorange and carrier phase on the L2 signal)
AAPPATOVS and AVHRR processing package
ADDArchitectural Design Document
AFGAdministration and Finance Group (of EUMETSAT)
AIRSAtmospheric Infrared Sounder
AMSUAdvanced Microwave Sounding Unit
AMVAtmospheric motion vector (satellite wind)
ARSAssisted Raw Sampling
ASCATAdvanced Scatterometer
AVHRRAdvanced Very High Resolution Radiometer (for visible and infrared imagery, flown in polar orbit)
BUFRBinary Universal Form for the Representation of meteorological data (A WMO standard data format for weather observations)
C/NOFSCommunications/Navigation Outage Forecasting System
CACooperation Agreements
CDAACThe COSMIC Data Analysis and Archive Center
CDOPContinous Development andn Operations Phase
CGMSCoordination Group for Meteorological Satellites
CGSCore Ground Segment
CHAMPChallenging Mini--Satellite Payload
CMConfiguration Management
CM SAFClimate Monitoring SAF
CMPConfiguration Management Plan
CNESCentre National d'Etudes Spatiales (of France)
COSMICConstellation Observing System for Meteorology, Ionosphere and Climate
CTCanonical Transform
CT2Canonical Transform (of type 2)
CVSConcurrent Version System
DADFData Acquisition and Dissemination Facility
DCPData Collection Platform
DDDouble Differenceing
DD2Double Differenceing (with two fiducial stations)
DMIDanish Meteorological Institute
DMSPDefense Meteorological Satellite Program (USA)
DoDUS Department of Defense
DOPDetailed Operational Proposal
DPDDDetailed Products Description Document
DRIDelivery Readiness Inspection
DWDDeutscher Wetterdienst
E-GVAPEuropean GPS Water Vapour
ECMWFEuropean Centre for Medium-Range Weather Forecasts
EDExtended Development
EDPExtended Development Phase
EGM96Earth Gravity Model - 1996 (Lemoine et al, 1998)
EGOPSEnd-to-end GNSS Occultation Performance Simulator
ENVISATEnvironmental Satellite
EOS EarthObserving System
EphemerisA table showing a satellite's location over time
EPSEUMETSAT Polar Satellite System
EPS/PPEPS Preparatory Programme
EQUARSEquatorial Atmosphere Research Satellite
ERSEuropean Remote Sensing satellite
ESAEuropean Space Agency (Paris, France)
ESOCEuropean Space Operations Centre (Darmstadt, Germany)
ESTECEuropean Space Research and Technology Centre (Noordwijk, The Netherlands)
EUCOSEUMETNET Network of European Observing System
EUMETCastEUMETSAT's dissemination system
EUMETSATEuropean Organisation for the Exploitation of Meteorological Satellites
EUMITSEUMETSAT on-line Invitation to Tender System
EURDEnd User Requirements Document
FiducialFiducial sites are fixed GPS receivers on the ground, against which data from the satellite can be differenced
FMForward Model
FSIFull Spectrum Inversion
GALILEOEuropean GNSS constellation project (EU)
GCOSGlobal Climate Observing System
GLONASSGlobal Navigation Satellite System (Russia)
GMESGlobal Monitoring for Environment and Security
GNSSGlobal Navigation Satellite System
GOESGeostationary Operational Environmental Satellite (USA)
GOMEGlobal Ozone Monitoring Experiment
GPACGNSS RO Processing and Archiving Centre (formerly GRAS Processing and Archiving Centre)
GPSGlobal Positioning System (USA)
GPS PODGPS Precise Orbit Determination products
GPS/METGPS/Meteorology Experiment on Microlab-1 (USA)
GPSOSGPS Occultation Sensor
GPSPPGPS Processing Package
GPSWVGPS for Water Vapour
GRACEGravity Recovery and Climate Experiment
GRASGNSS Receiver for Atmospheric Sounding
GRAS GSNTerm used for the GRAS network of the fiducial ground stations
GRAS PODGRAS Precise Orbit Determination products
GRAS SAFFormer name of the ROM SAF
GSNGround Support Network
GSN SSDTerm used for the set of data from the GSN
GTSGlobal Telecommunication System
HIRLAMHigh Resolution Limited Area Model
HIRSHigh Resolution Infrared Radiation Sounder
HRHigh Rate data (used for data taken at a rate of 50 observations per second; these are used for measurement of the stratosphere and troposphere)
HRITHigh Rate Information Transmission
HRPTHigh Rate Picture Transmission
IASIInfrared Atmospheric Sounding Interferometer
ICDInterface Control Document
IEECInstitut d'Estudis Espacials de Catalunya
IGOSIntegrated Global Observation Strategy
IGSInternational Geodynamics Service
IJPSInitial Joint Polar System
IOPInitial Operational Proposal
ISOInternational Organization for Standardization
IUInteraction with Users
JOPJoint Operation Procedure
JPLJet Propulsion Laboratory
KNMIKoninklijk Nederlands Meteorologisch Instituut
L1GPS carrier frequency, 1575.42 MHz
L2GPS carrier frequency, 1227.60 MHz
LEOLow Earth Orbit
LEOPLaunch and Early Orbit Phase
LRLow Rate data (observations taken once every ten seconds, used to calculate the satellite's orbit)
LRITLow Rate Information Transmission
LRPTLow Rate Picture Transmission
M&CManagement and Coordination
MARFMeteorological Archive and Retrieval Facility
MeteosatEUMETSAT geostationary meteorological satellite
MetOUnited Kingdom Meteorological Office (aka Met Office)
MetopMeteorological Operational Polar satellite (EUMETSAT Polar System spacecraft)
Metop PODMetop Precise Orbit Determination products
MHSMicrowave Humidity Sounder
MPEFMeteorological Products Extraction Facility (EUMETSAT)
MSCMeteorological Service of Canada
MSGMeteosat Second Generation
MTPMeteosat Transition Programme
NASANational Aeronautics and Space Administration (USA)
NCARNational Center for Atmospheric Research, a division of UCAR
NESDISNational Environmental Satellite Data and Information Service (of NOAA)
NMC/NCEPNational Meteorological Center / National Center for Environmental Prediction
NMSNational Meteorological Service
NOAANational Oceanic and Atmospheric Administration (USA)
NPOESSNational Polar-Orbiting Operational Environmental SAtellite System (NOAA)
NRTNear real time
NSPOTaiwan National Space Program Office
NWPNumerical Weather Prediction
OGSOverall Ground Segment
OICDOperational Interface Control Document
OLOpen Loop
OROperations Review
ORROperations Readiness Review
OSI SAFOcean & Sea-Ice SAF
PACPolicy Advisory Committee (of EUMETSAT)
PCRProducts Consolidation Review
PFSProduct Format Specification (EUMETSAT)
PGSPrimary Ground Station
PODPrecise Orbit Determination
PPProjects Plan
PPFProduct Processing Facility
PRNPseudo-Random Noise (one of 32 possible "gold codes" assigned to each GPS satellite; the PRN number is used in this database to identify different GPS satellites)
PTProject Team
PVRProduct Validation Report
QCQuality Control
QIQuality Indicator
RINEXReceiver Independent Exchange Format (a standard file format for storing the observations of GPS receivers)
RMDCNRegional Meteorological Data Communication Network
RMSRoot Mean Square
RORadio Occultation
ROM SAFRadio Occultation Meteorology SAF (former GRAS SAF)
ROPPRadio Occultation Processing Package
RRRequirements Review
RTMRadiative Transfer Model
RTTOVRadiative Transfer model for TOVS
S/ASelective Availability (a mode that the GPS satellites are usually in, which degrades the accuracy of their signal for non-military users)
S/CAbbreviation for "spacecraft"
SAC-CSatelite de Aplicaciones Cientificas - C
SAFSatellite Application Facility (EUMETSAT)
SAGScience Advisory Group
SARSynthetic Aperture Radar
SCIAMACHYScanning Imaging Absorption Spectrometer for Atmospheric Cartography
SDSingle Differencing
SEVIRISpinning Enhanced Visible and Infrared Imager
SGSteering Group
SNRSignal to Noise Ratio
SPScience Plan
SRDSystem Requirements Document
SRNSystem/software Release Note
SSDSounding Support Data
SSTSea-surface temperature
State VectorA collection of variables that can be uploaded to the satellite to set its state
STGScientific and Technical Group (of EUMETSAT)
STRRSystem Test Results Review
SVNIdentification number assigned to each GPS satellite
SVTRRSystem Validation Test Results Review
TBATo Be Added
TBCTo Be Confirmed
TBDTo Be Determined
TIROSTelevision and Infrared Observation Satellite
TLAThree Letter Acronym
TOATop of the atmosphere
TOUGHTargeting Optimal Use of GPS Humidity Measurements in Meteorology
TOVSTIROS Operational Vertical Sounder
TZDTropospheric (Total) Zenith Delay
U-MARFUnified Meteorological Archive and Retrieval Facility. Former name of the EUMETSAT Data Centre.
UCARUniversity Corporation for Atmospheric Research
UNAVCOUniversity Navstar Consortium
URUser requirements
URDUser Requirements Document
UTCUniversal Time Coordinated (in practice the same as Greenwich Mean Time)
VARVariational analysis: 1D, 2D, 3D, or 4D variants (NWP assimilation technique)
VSVisiting Scientist
VSAVisiting Scientist Activity
WBSWork Breakdown Structure
WMOWorld Meteorological Organization
WPWork Package
WVWater vapour
ZDZero Differencing
ZTDZenith Tropospheric (Total) Delay

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