2.2.0 spase://SMWG/Instrument/GOES/12/SEM Space Environment Monitor (SEM) SEM 2019-05-05T12:34:56Z An instrument package named SEM (Space Environment Monitor) monitors the energetic electrons and protons in the magnetosphere and the x-rays from the Sun. The above three have been carried on the earlier GOES missions, but GOES 12 carries also an X-ray imager providing an X-ray (about 0.1-1.0 nm wavelength) picture of the solar disk. spase://SMWG/Person/UNKNOWN GeneralContact NSSDC's Master Catalog https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2001-031A&ex=3 Information about the Space Environment Monitor (SEM) experiment on the GOES 12 mission. spase://SMWG/Instrument/GOES12/SEM Unspecified Space Environment Monitor (SEM) on GOES 12 spase://SMWG/Observatory/GOES/12