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

<https://gcmd.earthdata.nasa.gov/kms/concept/c5058bd9-6183-4c0a-a6aa-611540ba1196>
  skos:changeNote """2015-05-01 15:35:09.0 [aaleman] added slash to accommodate data centers' use of short name 
update PrefLabel (SSM/I); 
""" ;
  ns0:altLabel [ ] ;
  skos:definition """[Source: National Space Science Data Center, http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1990-105A-05 ]

The purpose of the microwave imager, SSM/I, is to provide day and night measurements of ocean surface wind speed, ice coverage and age, area and intensity of precipitation, cloud water content and land surface moisture. An estimate of atmospheric attenuation at each of the SSM/I sensor frequencies is also available. Microwave brightness temperatures are obtained with a seven-channel passive microwave radiometer operating at four frequencies, three with both vertical and horizontal polarization (19.35, 37.0, 85.5 GHz) and one with vertical polarization (22.23 GHz). The instrument scans across the ground track to gather data over an approximate 1400-km swath width with horizontal resolutions 13 to 50 km for different frequencies. The data can be used for tropical storm reconnaissance, ship routing in polar regions, agricultural weather, aircraft routing and refueling, etc.


Group: Instrument_Details
   Entry_ID: SSM/I
   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: SSM/I
      Long_Name: Special Sensor Microwave/Imager
   End_Group
   Group: Associated_Platforms
      Short_Name: DMSP 5D-2/F8
      Short_Name: DMSP 5D-2/F10
      Short_Name: DMSP 5D-2/F11
      Short_Name: DMSP 5D-2/F12
      Short_Name: DMSP 5D-2/F13
      Short_Name: DMSP 5D-2/F14
      Short_Name: DMSP 5D-3/F15
      Short_Name: DMSP 5D-3/F16
   End_Group
   Group: Spectral_Frequency_Information
      Number_Channels: 3
      Spectral_Frequency_Coverage_Range: Vertical and Horizontal Polarization 19.35, 37.0, 85.5 GHz
   End_Group
   Group: Spectral_Frequency_Information
      Number_Channels: 1
      Spectral_Frequency_Coverage_Range: Vertical Polarization 22.23 GHz
   End_Group
   Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1990-105A-05
   Online_Resource: http://www.ssmi.com/
   Online_Resource: http://www.discover-earth.org/ocean_surface_wind/ocean_surface_wind.html
   Group: Instrument_Logistics
      Instrument_Owner: Department of Defense-Department of the Air Force (United States)
   End_Group
End_Group"""@en ;
  skos:prefLabel "SSM/I"@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/c5058bd9-6183-4c0a-a6aa-611540ba1196> .