@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/ac8f25ba-a1f6-435d-9962-7dfe05b4cdd7>
  ns0:altLabel [ ] ;
  skos:definition """[Source: NOAA NPOESS Project, http://www.npoess.noaa.gov/sess_TXT.php ]


The Space Environment Monitor – NPOESS (SEM-N) is the primary instrument for 5 Environmental Data Records (EDRs). SEM-N is the only space weather sensor on NPOESS.

SEM-N is comprised of the Special Sensor J5 (SSJ5) for detection of low-energy particles, the Energetic Particle Spectrometer (EPS) for medium-energy particles, and omni-directional detectors for high-energy particles. In concert, these sensors are capable of providing measurements of the energy spectrum and directional distribution of charged particle fluxes in the vicinity of the spacecraft. The measurements are indicative of the population of the Earth’s radiation belts and of charged particle precipitation phenomena resulting from solar activity.


Group: Instrument_Details
   Entry_ID: SEM-N
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Particle Detectors
      Short_Name: SEM-N
      Long_Name: Space Environment Monitor NPOESS
   End_Group
   Group: Associated_Platforms
      Short_Name: NPOESS
   End_Group
   Online_Resource: http://npoess.noaa.gov/index.php?pg=instr#
   Online_Resource: http://adsabs.harvard.edu/abs/2008AGUFM.A51F0166W
   Creation_Date: 2009-03-17
   Group: Instrument_Logistics
      Instrument_Owner: USA/NOAA
      Instrument_Owner: USA/NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "SEM-N"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/5f5e4f2c-61b7-4694-8680-3fc5799f6171> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/5f5e4f2c-61b7-4694-8680-3fc5799f6171>
  skos:prefLabel "Particle Detectors"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/ac8f25ba-a1f6-435d-9962-7dfe05b4cdd7> .