@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/4190ebdc-e89a-4f3f-bc74-b2af4c68d009>
  skos:prefLabel "Profilers/Sounders"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/eff0bf28-0b98-4ad8-9d00-e83aa9a6245e> .

<https://gcmd.earthdata.nasa.gov/kms/concept/eff0bf28-0b98-4ad8-9d00-e83aa9a6245e>
  ns0:altLabel [ ] ;
  skos:definition """[Source: National Space Science Data Center, http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1990-105A-02 ]

The microwave temperature sounder, SSM/T, is a seven-channel scanning radiometer which measures radiation in the 5- to 6-mm wavelength (50- to 60-GHz) region (specifically 50.5, 53.2, 54.35, 54.9, 58.4, 58.825, and 59.4 GHz) to provide data on vertical temperatures from the earth's surface to above 30 km. The SSM/T operates in the absorption band of molecular oxygen. By choosing frequencies with different absorption coefficients on the wing of the oxygen absorption band, a series of weighting functions peaking at preselected altitudes is obtained. The radiometer scans across the nadir track on seven scan positions and two calibration positions (cold sky and 300 deg K). The dwell time for the crosstrack and calibration positions is 2.7 s each. The total scan period is 32 s. The instrument has an instantaneous field of view of 12 deg and scans plus or minus 36 deg from nadir.


Group: Instrument_Details
   Entry_ID: SSM/T
   Group: Instrument_Identification
      Instrument_Category: Earth Remote Sensing Instruments
      Instrument_Class: Passive Remote Sensing
      Instrument_Type: Profilers/Sounders
      Short_Name: SSM/T
      Long_Name: Special Sensor Microwave/Temperature
   End_Group
   Group: Associated_Platforms
      Short_Name: DMSP 5D-3/F16
      Short_Name: DMSP 5D-3/F15
      Short_Name: DMSP 5D-2/F14
      Short_Name: DMSP 5D-2/F13
      Short_Name: DMSP 5D-2/F12
      Short_Name: DMSP 5D-2/F11
      Short_Name: DMSP 5D-2/F10
      Short_Name: DMSP 5D-2/F8
      Short_Name: DMSP 5D-2/F7
      Short_Name: DMSP 5D-1/F4
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: Microwave
      Spectral_Frequency_Coverage_Range: 50.5, 53.2, 54.35, 54.9, 58.4, 58.825, and 59.4 GHz
   End_Group
   Online_Resource: http://www.ngdc.noaa.gov/dmsp/sensors/ssmt.html
   Group: Instrument_Logistics
      Instrument_Owner: Department of Defense-Department of the Air Force (United States)
   End_Group
End_Group"""@en ;
  skos:prefLabel "SSM/T"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/4190ebdc-e89a-4f3f-bc74-b2af4c68d009> ;
  a skos:Concept .