@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/de910a53-ecb0-4450-961a-baac5300df07>
  ns0:altLabel [ ] ;
  skos:definition """The Visible and Infrared Radiometer (VIRR) is a standard
radiometer that measures the intensity of radiation in five
wavelength channels.

Addditional information available at
http://www.met.rdg.ac.uk/~swsgrime/artemis/ch2/other/other.html

[Source: National Snow and Ice Data Center, http://nsidc.org/data/docs/daac/seasat_platform.gd.html ]

The VIRR identified cloud, land, and water features on the SEASAT mission. It operated in the visible band (0.49-0.94 micrometers) and in the infrared band (10.5-12.5 micrometers). The swath of the VIRR is approximately 2280 kilometers wide, centered on nadir. Spatial coverage for the mission was global, and temporal coverage spanned July 4, 1978 to August 27, 1978. The normal scan period was 1.25 seconds, and 48 scans were completed per minute.


Group: Instrument_Details
   Entry_ID: VIRR
   Group: Instrument_Identification
      Instrument_Category: Earth Remote Sensing Instruments
      Instrument_Class: Passive Remote Sensing
      Instrument_Type: Spectrometers/Radiometers
      Instrument_Subtype: Imaging Spectrometers/Radiometers
      Short_Name: VIRR
      Long_Name: Visible and Infrared Radiometer
   End_Group
   Group: Associated_Platforms
      Short_Name: SEASAT 1
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: Visible
      Spectral_Frequency_Coverage_Range: 0.49 - 0.94 micrometers
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: Infrared > Reflected
      Spectral_Frequency_Coverage_Range: 10.5 - 12.5 micrometers
   End_Group
   Online_Resource: http://nsidc.org/data/docs/daac/seasat_platform.gd.html
   Creation_Date: 2009-03-02
   Group: Instrument_Logistics
      Instrument_Start_Date: 1978-07-04
      Instrument_Stop_Date: 1978-08-27
      Instrument_Owner: USA/NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "VIRR"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/944b7691-af37-4fb4-9393-c114e7997829> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/944b7691-af37-4fb4-9393-c114e7997829>
  skos:prefLabel "Imaging Spectrometers/Radiometers"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/de910a53-ecb0-4450-961a-baac5300df07> .