CEOS Interface

The CEOS Interface allows those systems that support the WGISS common search and access mechanism to access metadata from CEOS agency systems that connect their data through this CEOS Interface. Both CWIC and FedEO federations support the CEOS Interface and data collections and data granules from many mission-instrument combinations are accessible through the CEOS Interface.

Client Portal

This is a search and discovery portal that directly connects to a data center and provides data viewing or downloading capability. This portal often contains content from multiple missions and allows searches by geographical region and time. Examples are: Reverb, CLASS, Eoli, GENESI-DEC, EuroGEOSS-Broker, PODAAC, GloVIS, CEOCat, SIRIUS, ESDI, Earth Explorers, CDSR, MVOS2.


This is the CEOS WGISS Integrated Catalog (CWIC) which provides an interface between client portals and partner data servers. WGISS is working with many CEOS agencies to utilize CWIC as an http-based query service between any search and discovery tool and a partner data catalog system.

Data Access Categories

Data Access Data access refers to being able to obtain an instrument's Earth science data. NOTE: This study did not consider data products from non-science instruments (i.e., star trackers, laser ranging, search and rescue, and data collection systems).


GEOSS Data Collection of Open Resources for Everyone (GEOSS Data-CORE) is a distributed pool of documented data sets, contributed by the GEO community on the basis of full and open exchange (at no more than the cost of reproduction and distribution) and unrestricted access.

IDN Portal

This is the high-level CEOS International Directory Network (IDN) Portal. This high-level portal provides information on missions, instruments and data products and provides a pathway to client portals. It is not possible to directly access data from the IDN.


No restrictions of any kind. Data is available anonymously on the internet.

Open -AP

Open-Advanced Protocol (Open-AR): Additional steps are required to receive access to the data. There are no specific restrictions on data access, but the approval process may require human interaction or approval and justification (or a specific proposal) may be requested for access to the data. Data that kept in non-public archives from which data can be requested free of charge fall into this category.


Open-Simple Registration (Open-SR): Simple registration is required to access data on the internet. Simple registration is defined as access being granted immediately or with a small delay. (< 2 days)


This data is tightly controlled and has specific conditions for access. This category includes all commercial data which requires payment for services or data that is limited specific user groups.
AcronymFull NameCountry
Airbus Defense and SpaceAirbus Defense and SpaceEurope
ASIItalian Space AgencieItaly
BNISSBNISSUnknown or Not Applicable
CASTChina Academy of Space TechnologyChina
CDTICentre for the Development of Industrial TechnologySpain
CEA-LETIFrench Atomic Energy Commission - Laboratoire d'Electronique de Technologie et d'InstrumentationFrance
CNESNational Centre for Space StudiesFrance
CNSAChina National Space AdministrationChina
CONAENational Space Activities CommissionArgentina
CRESDAChina Centre for Resources Satellite Data and ApplicationChina
CSACanadian Space AgencyCanada
CSIROCommonwealth Scientific and Industrial Research OrganisationAustralia
DigitalGlobeDigitalGlobeUnited States of America
DLRGerman Aerospace CentreGermany
DoD (USA)US Department of DefenseUnited States of America
DTU SpaceDTU SpaceDenmark
EADS AstriumEADS AstriumEurope
ECECUnknown or Not Applicable
ESAEuropean Space AgencyEurope
FMIFinnish Meteorological InstituteFinland
GISTDAGeo-Informatics and Space Technology Development AgencyThailand
ImageSatImageSat InternationalIsrael
INPENational Institute for Space Research (Brazil)Brazil
ISAIsrael Space AgencyIsrael
ISROIndian Space Research OrganisationIndia
ITTITT Industries Inc.United States of America
JAXAJapan Aerospace Exploration AgencyJapan
JMAJapan Meteorological AgencyJapan
KARIKARIRepublic of Korea
KASIKorea Astronomy and Space Science InstituteRepublic of Korea
KMAKMARepublic of Korea
KORDIKORDIRepublic of Korea
KSATKongsberg Satellite Services ASNorway
MDAMissile Defense Agency (US DoD)United States of America
METIMinistry of Economy, Trade and IndustryJapan
MiD (Italy)MiD (Italy)Italy
MITIMinistry of International Trade and IndustryJapan
MOE (Japan)MOE (Japan)Japan
NASANational Aeronautics and Space AdministrationUnited States of America
NASDANational Space Development Agency of JapanJapan
NIES (Japan)NIES (Japan)Japan
NIIRINIIRIUnknown or Not Applicable
NOAANational Oceanic and Atmospheric AdministrationUnited States of America
RALRALUnited Kingdom
SANSASouth Africa National Space AgencySouth Africa
Stellenbosch UniversityStellenbosch UniversitySouth Africa
STI-VASTSpace Technology Institute-Vietnam Academy of Science and TechnologySocialist Republic of Vietnam
UCARUniversity Corporation for Atmospheric ResearchUnited States of America
UKSAUnited Kingdom Space AgencyUnited Kingdom
USAFUS Air ForceUnited States of America
USGSUnited States Geological SurveyUnited States of America
VMOSTVietnamese Ministry of Science and TechnologySocialist Republic of Vietnam
VZLUCzech Aerospace Research and Test EstablishmentCzech Republic
AtmosphericAerosolAerosol Absorption Optical Depth (column/profile)
AtmosphericAerosolAerosol Effective Radius (column/profile)
AtmosphericAerosolAerosol Extinction/Backscatter (column/profile)
AtmosphericAerosolAerosol Optical Depth (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - BrO (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - CFC-11 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - CFC-12 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - CH4 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - ClO (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - ClONO2 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - CO (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - CO2 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - HNO3 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - N2O (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - NO (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - NO2 (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - OClO (column/profile)
AtmosphericAtmospheric ChemistryAtmospheric Chemistry - SO2 (column/profile)
AtmosphericAtmospheric ChemistryOzone Profile
AtmosphericCloud DataCloud Base Height
AtmosphericCloud DataCloud Cover
AtmosphericCloud DataCloud Drop Size (at cloud top)
AtmosphericCloud DataCloud Ice (column/profile)
AtmosphericCloud DataCloud Ice Content (at cloud top)
AtmosphericCloud DataCloud Imagery
AtmosphericCloud DataCloud Liquid Water (column/profile)
AtmosphericCloud DataCloud Mask
AtmosphericCloud DataCloud Optical Depth
AtmosphericCloud DataCloud Top Height
AtmosphericCloud DataCloud Top Temperature
AtmosphericCloud DataCloud Type
AtmosphericLightning DetectionLightning Detection
AtmosphericOther Atmospheric DataAtmospheric Pressure (over land surface)
AtmosphericOther Atmospheric DataAtmospheric Pressure (over sea surface)
AtmosphericOther Atmospheric DataAtmospheric Specific Humidity (column/profile)
AtmosphericOther Atmospheric DataAtmospheric Stability Index
AtmosphericOther Atmospheric DataAtmospheric Temperature (at surface)
AtmosphericOther Atmospheric DataAtmospheric Temperature (column/profile)
AtmosphericOther Atmospheric DataColor Dissolved Organic Matter (CDOM)
AtmosphericOther Atmospheric DataHeight of Tropopause
AtmosphericOther Atmospheric DataShort-wave Cloud Reflectance
AtmosphericOther Atmospheric DataTemperature of Tropopause
AtmosphericOther Atmospheric DataTurbulence
AtmosphericOther Atmospheric DataVisibility
AtmosphericOther Atmospheric DataVolcanic Ash
AtmosphericOther Atmospheric DataWater Vapor Imagery
AtmosphericPrecipitationPrecipitation Index (daily cumulative)
AtmosphericPrecipitationPrecipitation Profile (liquid or solid)
AtmosphericPrecipitationPrecipitation Rate (Liquid) at the Surface
AtmosphericPrecipitationPrecipitation Rate (Solid) at the Surface
AtmosphericRadiationDownwelling Long-wave Radiation at the Earth Surface
AtmosphericRadiationDownwelling Short-wave Radiation at the Earth Surface
AtmosphericRadiationDownwelling Solar Radiation at TOA
AtmosphericRadiationEarth Surface Albedo
AtmosphericRadiationFractionally Absorbed PAR (FPAR)
AtmosphericRadiationLong-wave Earth Surface Emissivity
AtmosphericRadiationOutgoing Long-wave Radiation at Earth Surface
AtmosphericRadiationOutgoing Long-wave Radiation at TOA
AtmosphericRadiationOutgoing Short-wave Radiation at TOA
AtmosphericRadiationOutgoing Spectral Radiance at TOA
AtmosphericRadiationPhotosynthetically Active Radiation (PAR)
AtmosphericWindWind Profile (horizontal)
AtmosphericWindWind Speed Over Sea Surface (horizontal)
AtmosphericWindWind Stress
AtmosphericWindWind Vector Over Sea Surface (horizontal)
Ice/SnowIce/SnowGlacier Cover
Ice/SnowIce/SnowGlacier Motion
Ice/SnowIce/SnowGlacier Topography
Ice/SnowIce/SnowIceberg Fractional Cover
Ice/SnowIce/SnowIceberg Height
Ice/SnowIce/SnowSea-ice Cover
Ice/SnowIce/SnowSea-ice Sheet Topography
Ice/SnowIce/SnowSea-ice Surface Temperature
Ice/SnowIce/SnowSea-ice Thickness
Ice/SnowIce/SnowSea-ice Type
Ice/SnowIce/SnowSnow Cover
Ice/SnowIce/SnowSnow Melting Status (wet/dry)
Ice/SnowIce/SnowSnow Water Equivalent
LandFireFire Area
LandFireFire Temperature
LandLand DataLand Cover
LandLand DataLand Surface Imagery
LandLand DataLand Surface Temperature
LandLand DataLand Surface Topography
LandLand DataNormalized Differential Vegetation Index (NDVI)
LandLand DataPermafrost
LandLand DataShort-wave Earth Surface Bi-directional Reflectance
LandLand DataSoil Moisture at the Surface
LandLand DataSoil Type
LandVegetationLeaf Area Index (LAI)
LandVegetationVegetation Canopy (height)
LandVegetationVegetation Cover
LandVegetationVegetation Type
OceanOil Spill CoverOil Spill Cover
OceanSea DataDiffuse Attenuation Coefficient (DAC)
OceanSea DataDominant Wave Direction
OceanSea DataDominant Wave Period
OceanSea DataGeoid
OceanSea DataOcean Chlorophyll Concentration
OceanSea DataOcean Dynamic Topography
OceanSea DataOcean Imagery
OceanSea DataOcean Salinity
OceanSea DataOcean Surface Currents (vector)
OceanSea DataOcean Suspended Sediment Concentration
OceanSea DataSea Level
OceanSea DataSea Surface Temperature (SST)
OceanSea DataSignificant Wave Height
In astrodynamics or celestial mechanics an elliptic orbit is a Kepler orbit with the eccentricity less than 1; this includes the special case of a circular orbit, with eccentricity equal to zero. In a stricter sense, it is a Kepler orbit with the eccentricity greater than 0 and less than 1 (thus excluding the circular orbit). In a wider sense it is a Kepler orbit with negative energy. This includes the radial elliptic orbit, with eccentricity equal to 1.
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A geosynchronous orbit (sometimes abbreviated GSO) is an orbit around the Earth with an orbital period of one sidereal day (approximately 23 hours 56 minutes and 4 seconds), matching the Earth's sidereal rotation period. The synchronization of rotation and orbital period means that, for an observer on the surface of the Earth, an object in geosynchronous orbit returns to exactly the same position in the sky after a period of one sidereal day. Over the course of a day, the object's position in the sky traces out a path, typically in the form of an analemma, whose precise characteristics depend on the orbit's inclination and eccentricity.
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Sun Synchronous
A Sun-synchronous orbit is a geocentric orbit which combines altitude and inclination in such a way that an object on that orbit ascends or descends over any given Earth latitude at the same local mean solar time. The surface illumination angle will be nearly the same every time. This consistent lighting is a useful characteristic for satellites that image the Earth's surface in visible or infrared wavelengths and for other remote sensing satellites. For example, a satellite in sun-synchronous orbit might ascend across the equator twelve times a day each time at approximately 15:00 mean local time. This is achieved by having the osculating orbital plane precess approximately one degree each day with respect to the celestial sphere, eastward, to keep pace with the Earth's movement around the Sun.
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