Radio Occultation Reprocessed Climate Data Record - Multimission

Abstract:
This ROM SAF multi-mission data record is derived from measurements by the Radio Occultation (RO) instruments onboard the Metop, CHAMP, COSMIC and GRACE satellites in low-Earth orbit. The RO technique utilizes the bending due to refraction of GNSS radio signals as they pass through the Earth's atmosphere. Each occultation event gives a vertical profile of atmospheric refractivity, from which temperature, pressure, and humidity are retrieved. The data have a global coverage and are insensitive to clouds and the underlying surface. The ROM SAF multi-mission climate data record covers the time period from late 2001 to the end of 2016. The data are available as monthly means on a regular latitude-height grid. The gridded monthly means include several geophysical variables: the bending angle of the GNSS signals, atmospheric refractivity, temperature and pressure in the so called 'dry' approximation, as well as temperature and tropospheric humidity obtained by so called 1D variational retrieval(using background model data as a priori). This retrieval also include surface pressure. In addition, the ROM SAF data record include tropopause heights as gridded monthly means. The bending angle data record constitute an FCDR, while the temperature and humidity data records constitute TCDRs of GCOS Essential Climate Variables (ECVs).

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Metadata Information

General

General information section
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languageeng
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  • theme.par.Atmosphere
  • theme.par.Climate
  • theme.par.Fundamental_Climate_Data_Record
  • theme.par.Thematic_Climate_Data_Record
  • theme.par.Level_3_Data
  • dis.SAF Archive
  • sat.CHAMP
  • sat.COSMIC
  • sat.GRACE
  • sat.Metop
  • sat.Metop.GRAS
contactsee section contact (role: pointOfContact)
dateStamp 2021-06-08
metadataStandardNameWMO Core Metadata Profile of ISO 19115 (WMO Core), 2003/Cor.1:2006 (ISO 19115), 2007 (ISO/TS 19139)
metadataStandardVersion1.3
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Identification information section
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citation
  • title:
    • Radio Occultation Reprocessed Climate Data Record - Multimission
  • dates:
    • creation: 2021-06-08
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    • see section contact (role: distributor)
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abstract see above
statusReleased
purpose
pointOfContactsee section contact (role: originator)
graphicOverviewhttps://navigator.eumetsat.int/preview/ROMSAF_Logo.png
resourceMaintenance
  • maintenanceAndUpdateFrequency:
  • updateScope:
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descriptiveKeywords:
  • theme:
    • Atmosphere
    • Climate
    • Fundamental Climate Data Record
    • Thematic Climate Data Record
    • Level 3 Data
  • theme:
    • satelliteObservation
  • dataCentre:
    • OriginatingCentre
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languageeng
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topicCategoryclimatologyMeteorologyAtmosphere
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Contact

Role: pointOfContact

Contact information section
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individualNameEUMETSAT SAF on Radio Occultation Meteorology
organisationNameROM SAF
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Role: distributor

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individualName EUMETSAT SAF on Radio Occultation Meteorology
organisationName ROM SAF
positionName
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organisationNameROM SAF
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Data Quality information section
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