Effective Snow Cover by VIS/IR Radiometry

Abstract:
The combined effect, within a product resolution element, of fractional snow cover and other reflective contributors is used to estimate the fractional cover at resolution element level. The product may be processed in different ways and have different quality depending on the surface being flat, forested or mountainous. The algorithm is based on multi-channel analysis of AVHRR, the most important being those in short-wave, thus the product is generated in daylight. The deficit of brightness in respect of the maximum one is correlated to the lack of snow in the product resolution element. In the case of forests, the signal attenuation due to forest canopy obstruction is taken in to account by application of transmissivity map assembled in advance using MODIS and GlobCover land cover data. In order to search for cloud-free pixels, multi-temporal analysis is performed over all images available in 24 hours (in daylight).

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Metadata Information

General

General information section
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fileIdentifier/identifierurn:x-wmo:md:int.eumetsat:EO:EUM:DAT:OBS:SNOBS3
languageeng
characterSetutf8
hierarchyLevelseries
hierarchyLevelName
  • theme.par.Land
  • theme.par.Precipitation
  • dis.EUMETCast-Europe
  • dis.SAF Archive
  • sat.Metop
  • sat.Metop.AVHRR
  • sat.Metop.MHS
  • sat.NOAA
contactsee section contact (role: pointOfContact)
dateStamp 2020-04-28
metadataStandardNameWMO Core Metadata Profile of ISO 19115 (WMO Core), 2003/Cor.1:2006 (ISO 19115), 2007 (ISO/TS 19139)
metadataStandardVersion1.3
referenceSystemInfo
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identificationInfo

Identification information section
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citation
  • title:
    • Effective Snow Cover by VIS/IR Radiometry
  • dates:
    • creation: 2013-06-13
  • fileIdentifier:
    • EO:EUM:DAT:OBS:SNOBS3
      (CodeSpace: )
  • citedResponsibleParty:
    • see section contact (role: distributor)
  • presentationForm:
  • otherCitationDetails:
abstract see above
statusPre-operational
purpose
pointOfContactsee section contact (role: originator)
graphicOverviewhttps://navigator.eumetsat.int/preview/sn-obs-3.png
resourceMaintenance
  • maintenanceAndUpdateFrequency:
  • updateScope:
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descriptiveKeywords:
  • theme:
    • Land
    • Precipitation
  • theme:
    • satelliteObservation
    • landMeteorologyClimate
  • dataCentre:
    • OriginatingCentre
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  • MD_Constraints:
    • useLimitation:
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    • accessConstraints: copyright
    • useConstraints: copyright
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languageeng
characterSetutf8
topicCategoryclimatologyMeteorologyAtmosphere
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Contact

Role: pointOfContact

Contact information section
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individualNameEUMETSAT SAF on Support to Operational Hydrology and Water Management
organisationNameH SAF
contactInfo
  • address:
    • Via Pratica di Mare, 45 c/o Aeroporto M. De Bernardi
      00071Pomezia ROMA
      Italy
  • email:

Role: distributor

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individualName European Organisation for the Exploitation of Meteorological Satellites
organisationName EUMETSAT
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organisationNameH SAF
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dataQualityInfo

Data Quality information section
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