CLARA-A2: CM SAF cLoud, Albedo and surface RAdiation dataset from AVHRR data - Edition 2

Abstract:
The CLARA-A2 record provides cloud properties, surface albedo and surface radiation parameters derived from the AVHRR sensor onboard polar orbiting NOAA and METOP satellites. This second edition is the improved and extended follow-up of the first version of the record (Karlsson et al., 2013; CLARA-A1 DOI: 10.5676/EUM_SAF_CM/CLARA_AVHRR/V001) which now covers a 34 year time period (1982-2015). Cloud products are available as monthly and daily averages and also as daily resampled global products (Level 2b) for individual satellites. Cloud parameter results are also presented as multi-parameter distributions (i.e., joint frequency histograms of cloud optical thickness, cloud top pressure and cloud phase) for daytime conditions. Surface albedo is presented as monthly and pentad (5 day) averages and is derived using all available data during the studied period. Surface radiation products are provided as monthly averages for the downwelling shortwave (including also daily averages) and the down- and upwelling longwave components. The monthly and daily averages are available on a 0.25°x0.25° global grid. Surface albedo and cloud products are also provided in two equal area grids with a resolution of 25 km x 25 km covering the polar regions. Daily resampled cloud products (level 2b) are provided in a global grid with a resolution of 0.05°x0.05°. For the latter, also a probabilistic cloud mask is added as an experimental product. This is a Thematic Climate Data Record (TCDR).

Download plain xml file

To get the data: go to WIS-Portal

General

AttributeValue
fileIdentifier/identifierurn:x-wmo:md:int.eumetsat:EO:EUM:CM:MULT:CLARA_AVHRR_V002
languageeng
characterSetutf8
hierarchyLevelseries
hierarchyLevelName
  • theme.par.Atmosphere
  • theme.par.Climate
  • theme.par.Cloud
  • theme.par.Radiation
  • theme.par.Thematic_Climate_Data_Record
  • dis.SAF Archive & FTP
  • sat.Metop
  • sat.Metop.AVHRR
  • sat.NOAA
contactsee section contact (role: pointOfContact)
dateStamp 2019-12-11
metadataStandardNameWMO Core Metadata Profile of ISO 19115 (WMO Core), 2003/Cor.1:2006 (ISO 19115), 2007 (ISO/TS 19139)
metadataStandardVersion1.3
referenceSystemInfo
metadataExtensionInfo

identificationInfo

AttributeValue
citation
  • title:
    • CLARA-A2: CM SAF cLoud, Albedo and surface RAdiation dataset from AVHRR data - Edition 2
  • dates:
    • creation: 2017-03-28
  • fileIdentifier:
    • EO:EUM:CM:MULT:CLARA_AVHRR_V002
      (CodeSpace: )
  • citedResponsibleParty:
    • see section contact (role: distributor)
  • presentationForm:
  • otherCitationDetails:
abstract see above
statusReleased
purpose
pointOfContactsee section contact (role: originator)
graphicOverviewhttps://navigator.eumetsat.int/preview/CLARA_A2_CTP_L2B.jpg
resourceMaintenance
  • maintenanceAndUpdateFrequency:
  • updateScope:
  • maintenanceNote:
descriptiveKeywords:
  • theme:
    • Atmosphere
    • Climate
    • Cloud
    • Radiation
    • Thematic Climate Data Record
  • theme:
    • satelliteObservation
  • dataCentre:
    • OriginatingCentre
resourceConstraints
  • MD_Constraints:
    • useLimitation:
  • MD_LegalConstraints:
    • accessConstraints: copyright
    • useConstraints: copyright
    • otherConstraints: WMOOther
languageeng
characterSetutf8
topicCategoryclimatologyMeteorologyAtmosphere
extentboundingExtent
  • description:
  • geographicElement:
    • westBoundLongitude:
    • eastBoundLongitude:
    • southBoundLatitude:
    • northBoundLatitude:
  • temporalElement:
    • beginPosition:
    • endPosition: (indeterminatePosition = )

Contact

Role: pointOfContact

AttributeValue
individualNameEUMETSAT SAF on Climate Monitoring
organisationNameCM SAF
contactInfo

Role: distributor

AttributeValue
individualName EUMETSAT SAF on Climate Monitoring
organisationName CM SAF
positionName
contactInfo

Role: originator

AttributeValue
organisationNameCM SAF
contactInfo

contentInfo

AttributeValue
CoverageDescription:
  • attributeDescription
  • contentType

distributionInfo

AttributeValue
distributionFormat
  • name:
  • version:
    • (gco:nilReason=)
  • specification:
transferOptions (onLine)

dataQualityInfo

AttributeValue
scopeseries
report
  • title:
  • date ():
  • explanation:
  • pass:
lineage
  • statement:
    • -
  • processStep: