@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/b1337c5b-c705-42c0-bc07-97689734253c>
  skos:prefLabel "AEM (Applications Explorer Mission)"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/a796345a-53d4-400d-ba32-e7c7eaa1a1cc> .

<https://gcmd.earthdata.nasa.gov/kms/concept/a796345a-53d4-400d-ba32-e7c7eaa1a1cc>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """The Stratospheric Aerosol and Gas Experiment (SAGE) spacecraft was the
second of the Applications Explorer Missions (AEM).  This small, versatile,
and relatively low-cost spacecraft was made of two distinct parts:

(1)  The SAGE instrument module containing the detectors
        and the associated hardware, and

(2)  The base module containing the necessary data handling,
        power, communications, command, and the attitude control
        subsystem to support the instruments.

The objective of the SAGE mission was to obtain stratospheric aerosol
and ozone data on a global scale for a better understanding of the earth&#039;s
environmental quality and the radiation budget.  The SAGE spacecraft was
designed for a 1-year life in orbit.  Unfortunately, SAGE experienced
power problems after May 15, 1979.  Nevertheless, spacecraft operations
continued until November 19, 1981.  The signal from the spacecraft was
last received on January 7, 1982 when the battery failed.

[Source: NASA NSSDC]


Group: Platform_Details
   Entry_ID: AEM-2
   Group: Platform_Identification
      Platform_Category: Earth Observation Satellites
      Platform_Series_or_Entity: AEM (Applications Explorer Mission)
      Short_Name: AEM-2
      Long_Name: Applications Explorer Mission-2
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: SAGE
      Short_Name: AEM-B
      Short_Name: Explorer 60
      Short_Name: Strat Aero and Gas Exp
      Short_Name: 11270
   End_Group
   Group: Platform_Associated_Instruments
      Short_Name: AEROSOL/CLOUD PARTICLE SIZER
      Short_Name: AEROSOL MONITOR
      Short_Name: SAGE I
   End_Group
   Group: Orbit
      Orbit_Inclination: 54.9 degrees
      Period: 96.8 minutes
      Perigee: 547.5 km
      Apogee: 660.2 km
      Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous
   End_Group
   Creation_Date: 2007-08-22
   Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1979-013A
   Sample_Image: http://space.skyrocket.de/img_sat/sage__1.jpg
   Group: Platform_Logistics
      Launch_Date: 1979-02-18
      Launch_Site: Wallops Flight Facility, Wallops Island, USA
      Design_Life: 1 year
      Primary_Sponsor: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "AEM-2"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/b1337c5b-c705-42c0-bc07-97689734253c> ;
  a skos:Concept .