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LANL-GEO ESP Differential Log-Flux Daily Avg.

ResourceID
spase://NASA/NumericalData/LANL/Avg/ESP/P1D

Description

Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Energetic Spectrometer for Particles (ESP) Daily averages from each geosynchronous satellite available on any given day were merged into a single, uniform daily average. Data span 22 September, 1989 through 31 December, 2009. Data are log(flux) with flux in units of electrons /(cm^2.s.sr.keV) [see t 2010JA015735 _LANL_Data_and_Processing for details]

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/LANL/Avg/ESP/P1D
ResourceHeader
ResourceName
LANL-GEO ESP Differential Log-Flux Daily Avg.
AlternateName
Los Alamos National Laboratory (LANL)-GEOsynchronous (GEO) Energetic Spectrometer for Particles (ESP) Log (base 10) Differential Flux (Particles/(cm^2)/s/keV/steradian) Daily Avg. (of available satellite data)
ReleaseDate
2020-07-07 21:14:45Z
Description

Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Energetic Spectrometer for Particles (ESP) Daily averages from each geosynchronous satellite available on any given day were merged into a single, uniform daily average. Data span 22 September, 1989 through 31 December, 2009. Data are log(flux) with flux in units of electrons /(cm^2.s.sr.keV) [see t 2010JA015735 _LANL_Data_and_Processing for details]

Acknowledgement
Reeves, G. D., S. K. Morley, R. H. W. Friedel, M. G. Henderson, T. E. Cayton, G. Cunningham, J. B. Blake, R. A. Christensen, and D. Thomsen (2011), On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake revisited, J. Geophys. Res., 116, A02213, doi:10.1029/2010JA015735.
Contacts
RolePersonStartDateStopDateNote
1.DataProducerspase://SMWG/Person/Geoffrey.D.Reeves
2.DataProducerspase://SMWG/Person/Steven.Karl.Morley
3.DataProducerspase://SMWG/Person/Reiner.Friedel
4.DataProducerspase://SMWG/Person/Michael.G.Henderson
5.DataProducerspase://SMWG/Person/Thomas.E.Cayton
6.DataProducerspase://SMWG/Person/Glenn.F.Cunningham
7.DataProducerspase://SMWG/Person/J.Bernard.Blake
InformationURL
Name
On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake revisited
URL
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JA015735
Description

Describes the processing performed on the SOPA and ESP data that were included in Reeves et. al, 2011

InformationURL
Name
Electronic supplement to "On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake Revisited”
URL
https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1029%2F2010JA015735&attachmentId=69009962
Description

Detailed information concerning instruments used, algorithm, and the resulting caveats of usage for data set.

InformationURL
Name
2010ja015735-readme.txt
URL
https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1029%2F2010JA015735&attachmentId=69009961
Description

Readme file with basic information on processing performed.

PriorIDs
spase://ViRBO/NumericalData/LANL/ESP/P1D
spase://VSPO/NumericalData/LANL/Avg/ESP/P1D
AccessInformation
RepositoryID
spase://SMWG/Repository/AGU/JGR
Availability
Online
AccessURL
Name
Download link for daily avg. of log LANL-GEO ESP Diff. Energy Flux
URL
https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1029%2F2010JA015735&attachmentId=69009963
Description

Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Energetic Spectrometer for Particles (ESP) Daily averages from each geosynchronous satellite available on any given day were merged into a single, uniform daily average. Data span 22 September, 1989 through 31 December, 2009. Data are log(flux) with flux in units of electrons /(cm^2.s.sr.keV) [see t 2010JA015735 _LANL_Data_and_Processing for details]

Nominal energy ranges for each ESP channel are
E234: 1.8-3.5MeV;
E56: 3.5-6.0MeV;
E7: 6.0-7.8MeV;

2.1 Column Date_YYYY-MM-DD Calendar date in YYYY-MM-DD format;
2.2 Column log(E234), log(flux) ESP channel E234;
2.3 Column log(E56), log(flux), ESP channel E56;
2.4 Column log(E7), log(flux), ESP channel E7

Format
Text
Encoding
ASCII
Acknowledgement
Reeves, G. D., S. K. Morley, R. H. W. Friedel, M. G. Henderson, T. E. Cayton, G. Cunningham, J. B. Blake, R. A. Christensen, and D. Thomsen (2011), On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake revisited, J. Geophys. Res., 116, A02213, doi:10.1029/2010JA015735.
ProcessingLevel
Calibrated
ProviderResourceName
Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Energetic Spectrometer for Particles (ESP)
InstrumentIDs
spase://SMWG/Instrument/LANL/1989/ESP
spase://SMWG/Instrument/LANL/1990/ESP
spase://SMWG/Instrument/LANL/1991/ESP
spase://SMWG/Instrument/LANL/1994/ESP
spase://SMWG/Instrument/LANL/97A/ESP
spase://SMWG/Instrument/LANL/01A/ESP
spase://SMWG/Instrument/LANL/02A/ESP
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1989-09-22 00:00:00
StopDate
2010-01-01 00:00:00
Cadence
PT24H
ObservedRegion
Earth.Magnetosphere
Caveats
"There are a number of caveats associated with these data. Primary cosmic rays may account for a substantial fraction of the observed counts. A significant secondary contribution is also implied, however there is currently no modeling to suggest to what extent this contributes to the observed counts. Some ESP channels appear to saturate at 4 x 10^4 counts/ s. The reported flux levels should not be used as absolute measures: It is known that ESP yields lower fluxes and harder spectra than SOPA, in the region of overlap between the detectors. Calculation of spectra, for example, would not be meaningful for this data set – especially as the data are daily averaged and merged from several satellites." (Electronic supplement to "On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake Revisited”)
Parameter #1
Name
Date
Description

Date, YYYY-MM-DD

Cadence
PT24H
Support
SupportQuantity
Temporal
Parameter #2
Name
log(E234)
Description

Base 10 logarithm of the total flux in channels 2, 3, and 4 of the LANL-GEO ESP measurements selected for a day

Cadence
PT24H
Units
#/cm^2/keV/s/sr
Particle
ParticleType
Electron
ParticleQuantity
NumberFlux
EnergyRange
Low
1.8
High
3.5
Units
MeV
Parameter #3
Name
log(E56)
Description

Base 10 logarithm of the total flux in channels 5 and 6 of the LANL-GEO ESP measurements selected for a day.

Cadence
PT24H
Units
#/cm^2/keV/s/sr
Particle
ParticleType
Electron
ParticleQuantity
NumberFlux
EnergyRange
Low
3.5
High
6.0
Units
MeV
Parameter #4
Name
log(E56)
Description

Base 10 logarithm of the total flux in channel 7 of the LANL-GEO ESP measurements selected for a day.

Cadence
PT24H
Units
#/cm^2/keV/s/sr
Particle
ParticleType
Electron
ParticleQuantity
NumberFlux
EnergyRange
Low
6.0
High
8.0
Units
MeV