Data Access
The MetOp B SEM data consists of geographic location information, counts/s from the Medium Energy Proton/Electron Detector (MEPED), and total energies from the Total Energy Detector (TED).
Version:2.2.9
The MetOp B SEM data consists of geographic location information, counts/s from the Medium Energy Proton/Electron Detector (MEPED), and total energies from the Total Energy Detector (TED).
| Role | Person | |
|---|---|---|
| 1. | ProjectScientist | spase://SMWG/Person/UNKNOWN |
| 2. | MetadataContact | spase://SMWG/Person/James.M.Weygand |
Information about the Space Environment Monitor-2 (SEM-2) experiment on the MetOp-B mission.
Information about the Space Environment Monitor-2 (SEM-2) experiment on the MetOp-B mission.
Direct link to the MetOp B SEM averaged ascii data. The data are sorted by year and spacecraft. The data files are daily files.
Universal time columns from left to right are: year month day hour minute sec and doy in the format of yyyy mm dd hh mm ss.sss dyd.ydydydy.
Universal Time expressed using a 6-column day, month, year, hour, minute, second representation
Geographic Position of sub-satellite point in degrees.
Geographic Longitude of sub-satellite point in degrees.
Geographic Position of foot-of-field-line point in degrees.
Geographic position of foot-of-field-line point in degrees.
L-value position of the spacecraft.
The eccentric magnetic local time at the fofl location is calculated following the
procedures set down by Cole, (1963) and Fraser-Smith, (1987). The calculation
is updated once a year using the current IGRF model field. The eccentric
magnetic local time is returned as an angle from 0 deg to 360 deg, with 0 deg being
magnetic midnight, and the angle incremented by 15 deg per hour magnetic local
time.
The local time is calculated at the sub-satellite location by assuming the local
time is the Universal Time incremented by one hour for every 15 deg east of the
Greenwich meridian. The equation of time is not used in the calculation, so this
variable is only approximately the true local solar time at the sub-satellite point.
The local time is also returned as an angle from 0 deg to 360 deg with 0 deg being midnight.
Medium Energy Proton/Electron Detector-0 degree electron detector on the MetOp B 3 axis stabilized spacecraft is set to view outward along the Earth-center to satellite line.
The angle given in this parameter is the angle between the 0 degree electron detector and the Earth-center to spacecraft line. At the north polar region the angle will be about zero and
at the south pole the angle will be around 180 degrees.
Medium Energy Proton/Electron Detector-90 electron detector on the MetOp B 3 axis stabilized spacecraft is set to view perpendicular along the Earth-center to satellite line.
The angle given in this parameter is the angle between the 0 degree electron detector and the Earth-center to spacecraft line. At the polar regiond the angle will be about 90 degrees.
MEPED-0 >30 keV electrons.
MEPED-0 >100 keV electrons.
MEPED-0 >300 keV electrons.
MEPED-0 30 keV to 80 keV protons.
MEPED-0 80 keV to 240 keV protons.
MEPED-0 240 keV to 800 keV protons.
MEPED-0 800 keV to 2500 keV protons.
MEPED-0 2500 keV to 6900 keV protons.
MEPED-0 >6900 keV protons.
MEPED-90 >30 keV electrons.
MEPED-90 >100 keV electrons.
MEPED-90 >300 keV electrons.
MEPED-90 30 keV to 80 keV protons.
MEPED-90 80 keV to 240 keV protons.
MEPED-90 240 keV to 800 keV protons.
MEPED-90 800 keV to 2500 keV protons.
MEPED-90 2500 keV to 6900 keV protons.
MEPED-90 >6900 keV protons.
MEPED omni-directional >16 MeV protons.
MEPED omni-directional >36 MeV protons.
MEPED omni-directional >70 MeV protons.
MEPED omni-directional >=140 MeV protons.
TED, Total Energy Detector Average.
TED characteristic energy of electrons.
TED characteristic energy of protons.
TED electron contribution.