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FCDR 
Fundamental Climate Data Record (from satellites) 
GAW 
Global Atmosphere Watch 
G AWT EC 
GAW Training and Education Centre 
GCMP 
GCOS Climate Monitoring Principles 
GCOS 
Global Climate Observing System (co-sponsored by WMO, UNEP, 
IOC and ICSU) 
GDI-DE 
Geodateninfrastruktur Deutschland 
GEO 
Group on Earth Observations 
GEOSS 
Global Earth Observation System of Systems 
GEW EX 
Global Energy and Water Cycle Experiment 
GLOSS 
Global Sea Level Observing System 
GMES 
Global Monitoring for Environment and Security 
GOFC-GOLD 
Global Observation of Forest Cover and Land Dynamics 
GOME 
Global Ozone Monitoring Experiment (instrument to measure ozone 
profiles, ERS-2 and EPS satellites) 
GOOS 
Global Ocean Observing System 
GOS 
WMO Global Observing System 
GPCC 
Global Precipitation Climatology Centre 
GPS 
Global Positioning System 
GRDC 
WMO Global Runoff Data Centre 
GRUAN 
GCOS Reference Upper-air Network 
GSN 
GCOS Surface Network 
GTN-G 
Global Terrestrial Network for Glaciers 
GTN-H 
Global Terrestrial Network for Hydrology 
GTN-L 
Global Terrestrial Network - Lakes 
GTN-P 
Global Terrestrial Network for Permafrost 
GTN-R 
Global Terrestrial Network for River Discharge 
GTOS 
Global Terrestrial Observing System (co-sponsored by WMO, 
UNESCO, ICSU, UNEP and FAO) 
GTS 
WMO Global Telecommunication System 
GTZ 
Gesellschaft für Technische Zusammenarbeit GmbH (German 
Agency for Technical Co-operation) 
GUAN 
GCOS Upper Air Network 
GVaP 
GEWEX Global water Vapor Project 
IASI 
Infrared Atmospheric Sounding Interferometer 
ICSU 
International Council for Science 
IFM-GEOMAR 
Leibniz-lnstitut für Meereswissenschaften (Leibniz Institute of Marine 
Sciences) at the University of Kiel 
IMAGI 
Interministerieller Ausschuss für Geoinformation (Interministerial 
Committee for Geoinformation) 
INSPIRE 
Infrastructure for Spatial Information in Europe 
ISO 
International Organization for Standardization 
MACC 
Monitoring Atmospheric Composition and Climate 
MERIS 
Medium Resolution Imaging Spectrometer 
MetOp 
EUMETSAT Meteorological Operational Satellite programme 
MOL-RAO 
Lindenberg Meteorological Observatory - Richard Assmann Obser 
vatory 
MSG 
Meteosat Second Generation 
MTG 
Meteosat Third Generation 
NABAM 
Nationales Basismessnetz (National Base Observing Network) 
NASA 
National Aeronautics and Space Administration 
NDACC 
Network for the Detection of Atmospheric Composition Change 
NDMC 
Network for the Detection of Mesopause Change 
NKDZ 
Nationales Klimadatenzentrum (National Climate Data Centre)