@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/4e357ecc-78bd-4da7-b28a-4b34f61f8587>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """The Solar Mesosphere Explorer (SME) mission objective was primarily to
investigate the processes that create and destroy ozone in the Earth's
mesosphere and upper stratosphere. Some specific goals were (1) to
determine the nature and magnitude of changes in mesospheric ozone
densities resulting from changes in the solar ultraviolet flux; (2) to
determine the interrelationship between solar flux, ozone, and the
temperature of the upper stratosphere and mesosphere; (3) to determine
the interrelationship between ozone and water vapor; and (4) to
determine the interrelationship between nitrogen dioxide and
ozone. The satellite experiment complement consisted of a solar
ultraviolet spectrometer, an ultraviolet ozone spectrometer, an
infrared radiometer, a 1.27-micrometer spectrometer, and a nitrogen
dioxide spectrometer. In addition, a solar proton alarm detector was
carried on board to measure the integrated solar flux in the range 30
to 500 MeV. Spin stabilized at 5 rpm, the satellite moved in a 3
a.m. to 3 p.m. sun-synchronous orbit. The spacecraft body was a
cylinder approximately 1.7 by 1.25 m and consisted of two major
modules: the observatory module that housed the scientific
instruments, and the spacecraft bus. The spin axis was oriented normal
to the orbital plane. The command system was capable of executing
commands in real time or from stored program control. Power was
supplied by a solar cell array. The telemetry system was used either
in a real-time or in a tape-recorder mode. Further details and some
measurement results are written in C. A. Barth et al., 'Solar
mesosphere explorer: scientific objectives and results,'
Geophys. Res. Lett., v. 10, no. 4, p. 237, 1983. All instruments on
board the SME were turned off in December 1988 because of energy
considerations.
                  - Auxiliary Information -
    Launch Date and Time :  1981-10-06 11:27:00
    Epoch Date and Time  :  1981-10-16
    Apogee (km or AU):      551.
    Perigee (km or AU):     535.
    Inclination (degree) :  97.5
    Orbit Type :            Geocentric
IDN_Node: USA/NASA


Group: Platform_Details
   Entry_ID: SME
   Group: Platform_Identification
      Platform_Category: Earth Observation Satellites
      Short_Name: SME
      Long_Name: Solar Mesospheric Explorer
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: SME
   End_Group
   Group: Orbit
      Orbit_Inclination: 97.5
      Perigee: 535
      Apogee: 551
   End_Group
   Creation_Date: 2007-11-28
   Online_Resource: http://lasp.colorado.edu/sme/
   Sample_Image: http://lasp.colorado.edu/sme/gifs/sme.gif
   Group: Platform_Logistics
      Launch_Date: 1981-09-06
      Launch_Site: Cape Canaveral/Kennedy Space Center, USA
      Primary_Sponsor: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "SME"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/3466eed1-2fbb-49bf-ab0b-dc08731d502b> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/3466eed1-2fbb-49bf-ab0b-dc08731d502b>
  skos:prefLabel "Earth Observation Satellites"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/4e357ecc-78bd-4da7-b28a-4b34f61f8587> .