SPASE Resource Description

spase://NASA/NumericalData/LANL/Avg/SOPA/PT1D

ResourceName

LANL Daily-averaged electron fluxes from the Synchronous Orbit Particle Spectrometer (SOPA)

ReleaseDate

2020-07-07 21:14:45Z

Description

Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Synchronous Orbit Particle Spectrometer (SOPA) 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). The original SOPA data channels have been fit to a bi-Maxwelian spectra. Fluxes are evaluated at virtual "channels" for fixed energies (i.e. not for an energy passband or integral thresholds) [see 2010JA015735 _LANL_Data_and_Processing for details] (2010ja015735-readme.txt)

Contacts

	Role	Person
1.	DataProducer	spase://SMWG/Person/Geoffrey.D.Reeves
2.	DataProducer	spase://SMWG/Person/Steven.Karl.Morley
3.	DataProducer	spase://SMWG/Person/Reiner.Friedel
4.	DataProducer	spase://SMWG/Person/Michael.G.Henderson
5.	DataProducer	spase://SMWG/Person/Thomas.E.Cayton
6.	DataProducer	spase://SMWG/Person/Glenn.F.Cunningham
7.	DataProducer	spase://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/SOPA/PT1D

spase://VSPO/NumericalData/LANL/Avg/SOPA/PT1D

RepositoryID

spase://SMWG/Repository/AGU/JGR

Availability

Online

AccessURL

Name

Download link for daily avg. of log LANL-GEO SOPA Avg. Daily Flux

URL

https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1029%2F2010JA015735&attachmentId=69009964

Description

Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Synchronous Orbit Particle Spectrometer (SOPA) 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). The original SOPA data channels have been fit to a bi-Maxwelian spectra. Fluxes are evaluated at virtual "channels" for fixed energies (i.e. not for an energy passband or integral thresholds).

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.

Calibrated

Daily-averaged electron fluxes from the Los Alamos National Laboratory (LANL) Energetic Spectrometer for Particles (ESP)

spase://SMWG/Instrument/LANL/1989/SOPA

spase://SMWG/Instrument/LANL/1990/SOPA

spase://SMWG/Instrument/LANL/1991/SOPA

spase://SMWG/Instrument/LANL/1994/SOPA

spase://SMWG/Instrument/LANL/1997/SOPA

spase://SMWG/Instrument/LANL/01A/SOPA

spase://SMWG/Instrument/LANL/02A/SOPA

EnergeticParticles

TimeSpan

StartDate

1989-02-08 00:00:00

StopDate

2010-01-01 00:00:00

Cadence

PT24H

Earth.Magnetosphere

"Only limited ‘cleaning’ of this data set is performed prior to daily averaging and merging. Any detected failures of the fitting procedure are first removed from the data archive prior to daily averaging. A small fraction of daily-averaged flux values appear to be unphysically high. A basic ‘cleaning’ is done by excluding any data points at which the evaluated daily average flux at more than four energies is over four standard deviations above the mean daily flux for each satellite. We stress that these unphysical values represent only a small fraction of the data set – many, but not all of these values are removed by the basic pre-processing applied here – and work is continuing to improve this data set. It should be noted that the very highest and lowest evaluated energies are extrapolated using the fits and may be less reliable than those energies within the detection limits of the instrument." (Electronic supplement to "On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake Revisited”)

Name

Date

Description

Date, YYYY-MM-DD

Cadence

PT24H

Support

SupportQuantity

Temporal

Name

E1 - .0241MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .0241MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.0241

High

.0241

Units

10^6 eV

Name

E2 - 0.0317 MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .0317MeV.

Cadence

PT24H

Units

#/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.0317

High

.0317

Units

10^6 eV

Name

E3 - .0.0416MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of 0.0416MeV.

Cadence

PT24H

Units

#/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

0.0416

High

0.0416

Units

MeV

Name

E4 - .0625MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .0625MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

FillValue

nan

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.0625

High

.0625

Units

10^6 eV

Name

E5 - .0900MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .0900MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.0900

High

.0900

Units

MeV

Name

E6 - .1275MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .1275MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.1275

High

.1275

Units

10^6 eV

Name

E7 - .1725MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .1725MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.1725

High

.1725

Units

10^6 eV

Name

E8 - .2700MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .2700MeV.

Cadence

PT24H

Units

#/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.2700

High

.2700

Units

10^6 eV

Name

E9 - .4075MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .4075MeV.

Cadence

PT24H

Units

#/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.4075

High

.4075

Units

10^6 eV

Name

E10 - .6250MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .6250MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.6250

High

.6250

Units

10^6 eV

Name

E11 - .9250MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of .9250MeV.

Cadence

PT24H

Units

#/cm^2/keV/s/sr

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

.9250

High

.9250

Units

MeV

Name

E12 - 1.3000MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of 1.3000MeV.

Cadence

PT24H

Units

#/cm^2/keV/s/sr

FillValue

nan

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

1.3000

High

1.3000

Units

10^6 eV

Name

E13 - 2.0000MeV

Description

Base 10 logarithm of daily-averaged SOPA flux measurements selected for each day. Data are for a virtual channel at an energy of 2.0000MeV.

Cadence

PT24H

Units

electrons/cm^2/keV/s/sr

FillValue

nan

Particle

ParticleType

Electron

ParticleQuantity

NumberFlux

EnergyRange

Low

2.0000

High

2.0000

Units

10^6 eV

LANL Daily-averaged electron fluxes from the Synchronous Orbit Particle Spectrometer (SOPA)

Details

NumericalData