@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/386ea533-9d98-4202-bad3-bb630ac39a93>
  skos:prefLabel "Photon/Optical Detectors"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/eb147027-c757-43d6-a9fc-e492a21b3404> .

<https://gcmd.earthdata.nasa.gov/kms/concept/eb147027-c757-43d6-a9fc-e492a21b3404>
  skos:definition """Global measurements of the hydroxyl mesospheric airglow over an extended period of time have been made possible by the NASA SABER infrared sensor aboard the TIMED satellite which has been functioning since December of 2001. The orbital mission has continued over a significant portion of a solar cycle. Experimental data from SABER for several years have exhibited equatorial enhancements of the nighttime mesospheric OH airglow layer consistent with the high average diurnal solar flux. The brightening of the OH airglow typically means more H+O3 is being reacted. At both the spring and autumn seasonal equinoxes when the equatorial solar UV irradiance mean is greatest, the peak volume emission rate (VER) of the nighttime Meinel infrared airglow typically appears to be both significantly brighter plus lower in altitude by several kilometres at low latitudes compared with midlatitude findings.


Group: Instrument_Details
   Entry_ID: AIRGLOW SENSOR
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Photon/Optical Detectors
      Short_Name: AIRGLOW SENSOR
   End_Group
   Group: Instrument_Associated_Sensors
      Short_Name: AIRGLOW SENSOR
   End_Group
   Online_Resource: http://www.iop.org/EJ/abstract/1402-4896/75/5/004
   Creation_Date: 2008-03-18
End_Group"""@en ;
  skos:prefLabel "AIRGLOW SENSOR"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/386ea533-9d98-4202-bad3-bb630ac39a93> ;
  a skos:Concept .