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NOAA 18 POES Space Environment Monitor-2 (SEM-2) Averaged ASCII data at 16 s Resolution

ResourceID
spase://NOAA/NumericalData/POES/18/SEM-2/Processed/Avg/PT16S

Description
The NOAA POES 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).

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Version:2.2.9

NumericalData

ResourceID
spase://NOAA/NumericalData/POES/18/SEM-2/Processed/Avg/PT16S
ResourceHeader
ResourceName
NOAA 18 POES Space Environment Monitor-2 (SEM-2) Averaged ASCII data at 16 s Resolution
AlternateName
NOAA 18 POES SEM data
ReleaseDate
2018-05-15 18:38:16Z
Description
The NOAA POES 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).
Acknowledgement
NOAA National Environmental Satellite Service (United States); Dr. R. Bushnell
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/R.Bushnell
2. MetadataContact spase://SMWG/Person/James.M.Weygand

InformationURL
Name
Archive and Instrument Documentation at NOAA National Geophysical Data Center (NGDC)
URL
https://www.ngdc.noaa.gov/stp/satellite/poes/
Description
Information about the NOAA POES MEPED and TED instruments.
Language
en
InformationURL
Name
NOAA SEM Instrument Descriptions and Archive Data Documentation
URL
https://satdat.ngdc.noaa.gov/sem/poes/docs/sem2_docs/2006/SEM2v2.0.pdf
Description
Information about the NOAA POES SEM documentation.
Language
en
InformationURL
Name
Format description for the 16-second averaged data in TEXT format
URL
https://satdat.ngdc.noaa.gov/sem/poes/docs/readme_16s_ascii.txt
Description
readme for the 16-s data in ascii format.
Language
en
PriorIDs
spase://VMO/NumericalData/NOAA/18/SEM/PT16S
AccessInformation
RepositoryID
spase://SMWG/Repository/NOAA/NGDC
Availability
Online
AccessRights
Open
AccessURL
Name
Direct access to the NOAA POES SEM data
URL
https://satdat.ngdc.noaa.gov/sem/poes/data/processed/swpc/uncorrected/avg/
Description
Direct link to the NOAA POES SEM averaged ascii data. The data are sorted by year and spacecraft. The data files are daily files.
Format
Text.ASCII
Encoding
None
Acknowledgement
NOAA; Dr. R. Bushnell
ProcessingLevel
Calibrated
ProviderResourceName
NOAA POES 18 SEM-2
ProviderProcessingLevel
Level-2
InstrumentIDs
spase://SMWG/Instrument/NOAA/18/SEM-2
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
2005-06-07 00:00:00
StopDate
2014-12-29 23:59:00
Note
Time format in data files is year month day hour minute seconds.
Cadence
PT16S
Caveats
Flags=-999.0
Keywords
16 s
polar orbiting
NOAA
POES
SEM-2
Magnetospheric Electron Detector
Magnetospheric Proton Detector
Parameter #1
Name
Universal Time
ParameterKey
Time
Description
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.
Cadence
PT16S
Structure
Size
7
Description
Universal Time expressed using a 6-column day, month, year, hour, minute, second representation
Element
Name
Year
Index
1
ParameterKey
Year
Element
Name
Month
Index
2
ParameterKey
Month
Element
Name
Day
Index
3
ParameterKey
Day
Element
Name
Hour
Index
4
ParameterKey
Hour
Element
Name
Minute
Index
5
ParameterKey
Minute
Element
Name
Second
Index
6
ParameterKey
Second
Element
Name
Day Of Year
Index
7
ParameterKey
dayofyear
Support
SupportQuantity
Temporal
Parameter #2
Name
Geographic Latitude of sub-satellite point.
ParameterKey
sslat
Description
Geographic Position of sub-satellite point in degrees.
Units
degrees
ValidMin
-90
ValidMax
90
Support
SupportQuantity
Positional
Parameter #3
Name
Geographic Longitude of sub-satellite point.
ParameterKey
sslon
Description
Geographic Longitude of sub-satellite point in degrees.
Units
degrees
ValidMin
0
ValidMax
360
Support
SupportQuantity
Positional
Parameter #4
Name
Geographic Latitude of foot-of-field-line.
ParameterKey
folat
Description
Geographic Position of foot-of-field-line point in degrees.
Units
degrees
ValidMin
-90
ValidMax
90
Support
SupportQuantity
Positional
Parameter #5
Name
Geographic Longitude of foot-of-field-line.
ParameterKey
folon
Description
Geographic position of foot-of-field-line point in degrees.
Units
degrees
ValidMin
0
ValidMax
360
Support
SupportQuantity
Positional
Parameter #6
Name
L-Value Position of the Spacecraft.
ParameterKey
lval
Description
L-value position of the spacecraft.
Support
SupportQuantity
Positional
Parameter #7
Name
Magnetic Local Time of the Spacecraft.
ParameterKey
mlt
Description
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 0º to 360º, with 0º being magnetic midnight, and the angle incremented by 15º 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 15º 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 0º to 360º with 0º being midnight.
Units
degrees
ValidMin
0
ValidMax
360
Support
SupportQuantity
Positional
Parameter #8
Name
MEPED-0 pitch angle at the satellite.
ParameterKey
pas0
Description
Medium Energy Proton/Electron Detector-0 degree electron detector on the NOAA 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.
Units
degrees
ValidMin
0
ValidMax
180
Particle
ParticleType
Electron
ParticleQuantity
ArrivalDirection
Parameter #9
Name
MEPED-90 pitch angle at the satellite.
ParameterKey
pas90
Description
Medium Energy Proton/Electron Detector-90 electron detector on the NOAA 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.
Units
degrees
ValidMin
0
ValidMax
180
Particle
ParticleType
Electron
ParticleQuantity
ArrivalDirection
Parameter #10
Name
MEPED-0 > 30 keV electrons.
ParameterKey
mep0e1
Description
MEPED-0 >30 keV electrons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Electron
ParticleQuantity
CountRate
Parameter #11
Name
MEPED-0 > 100 keV electrons.
ParameterKey
mep0e2
Description
MEPED-0 >100 keV electrons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Electron
ParticleQuantity
CountRate
Parameter #12
Name
MEPED-0 > 300 keV electrons.
ParameterKey
mep0e3
Description
MEPED-0 >300 keV electrons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Electron
ParticleQuantity
CountRate
Parameter #13
Name
MEPED-0 30 keV to 80 keV protons.
ParameterKey
mep0p1
Description
MEPED-0 30 keV to 80 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
30
High
80
Units
keV
Parameter #14
Name
MEPED-0 80 keV to 240 keV protons.
ParameterKey
mep0p2
Description
MEPED-0 80 keV to 240 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
80
High
240
Units
keV
Parameter #15
Name
MEPED-0 240 keV to 800 keV protons.
ParameterKey
mep0p3
Description
MEPED-0 240 keV to 800 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
240
High
800
Units
keV
Parameter #16
Name
MEPED-0 800 keV to 2500 keV protons.
ParameterKey
mep0p4
Description
MEPED-0 800 keV to 2500 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
800
High
2500
Units
keV
Parameter #17
Name
MEPED-0 2500 keV to 6900 keV protons.
ParameterKey
mep0p5
Description
MEPED-0 2500 keV to 6900 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
2500
High
6900
Units
keV
Parameter #18
Name
MEPED-0 > 6900 keV protons.
ParameterKey
mep0p6
Description
MEPED-0 >6900 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #19
Name
MEPED-90 > 30 keV electrons.
ParameterKey
mep0e1
Description
MEPED-90 >30 keV electrons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Electron
ParticleQuantity
CountRate
Parameter #20
Name
MEPED-90 > 100 keV electrons.
ParameterKey
mep0e2
Description
MEPED-90 >100 keV electrons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Electron
ParticleQuantity
CountRate
Parameter #21
Name
MEPED-90 > 300 keV electrons.
ParameterKey
mep0e3
Description
MEPED-90 >300 keV electrons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Electron
ParticleQuantity
CountRate
Parameter #22
Name
MEPED-90 30 keV to 80 keV protons.
ParameterKey
mep90p1
Description
MEPED-90 30 keV to 80 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
30
High
80
Units
keV
Parameter #23
Name
MEPED-90 80 keV to 240 keV protons.
ParameterKey
mep90p2
Description
MEPED-90 80 keV to 240 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
80
High
240
Units
keV
Parameter #24
Name
MEPED-90 240 keV to 800 keV protons.
ParameterKey
mep90p3
Description
MEPED-90 240 keV to 800 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
240
High
800
Units
keV
Parameter #25
Name
MEPED-90 800 keV to 2500 keV protons.
ParameterKey
mep90p4
Description
MEPED-90 800 keV to 2500 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
800
High
2500
Units
keV
Parameter #26
Name
MEPED-90 2500 keV to 6900 keV protons.
ParameterKey
mep90p5
Description
MEPED-90 2500 keV to 6900 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
2500
High
6900
Units
keV
Parameter #27
Name
MEPED-90 > 6900 keV protons.
ParameterKey
mep90p6
Description
MEPED-90 >6900 keV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #28
Name
MEPED omni-directional > 16 MeV protons
ParameterKey
mepomp6
Description
MEPED omni-directional >16 MeV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #29
Name
MEPED omni-directional > 36 MeV protons
ParameterKey
mepomp7
Description
MEPED omni-directional >36 MeV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #30
Name
MEPED omni-directional > 70 MeV protons
ParameterKey
mepomp8
Description
MEPED omni-directional >70 MeV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #31
Name
MEPED omni-directional >= 140 MeV protons
ParameterKey
mepomp9
Description
MEPED omni-directional >=140 MeV protons.
Units
counts/s
FillValue
-999
Particle
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #32
Name
Total Energy Detector (TED) Average
ParameterKey
ted
Description
TED, Total Energy Detector Average.
Units
ergs/cm2/sec
FillValue
-999
Particle
ParticleType
Proton
ParticleType
Electron
ParticleQuantity
EnergyFlux
Parameter #33
Name
TED Characteristic Energy of Electrons
ParameterKey
echar
Description
TED characteristic energy of electrons.
Units
eV
FillValue
-999
Particle
ParticleType
Electron
Qualifier
Total
ParticleQuantity
Energy
Parameter #34
Name
TED Characteristic Energy of Protons
ParameterKey
pchar
Description
TED characteristic energy of protons.
Units
eV
FillValue
-999
Particle
ParticleType
Proton
Qualifier
Total
ParticleQuantity
Energy
Parameter #35
Name
TED electron contribution
ParameterKey
econtr
Description
TED electron contribution.
ValidMin
0
ValidMax
1
FillValue
-999
Particle
ParticleType
Electron
Qualifier
Ratio
ParticleQuantity
Energy
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Last Updated: 2018-05-15