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Share sensitive information only on official, secure websites. HDPWS Data Access HTTPS from SPDF CDAWeb WebService: CDAWeb Programmatic Data Access HAPI: CDAWeb HAPI Server LANL 1990 Geosynchronous Orbit Particle Analyzer (SOPA) at 60 sec Resolution in Spacecraft Coordinates var authors='Dors, E.; Friedel, R.'; document.write(authors); (2023). LANL 1990 Geosynchronous Orbit Particle Analyzer (SOPA) at 60 sec Resolution in Spacecraft Coordinates. [Data set]. Space Physics Data Facility. https://doi.org/10.48322/zzr5-dd89. Accessed on document.write(currentDateStr);. Note: Proper references, including Copy BibTeX Citation or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication. ResourceID spase://NASA/NumericalData/LANL/1990/SOPA/PT60S Description The LANL 1990-095 SOPA data set contains various parameters in a variety of coordinates systems including GEI, spacecraft, polar geographic, and polar magnetic coordinates at about 60 s resolution. These parameters include universal time, spacecraft location, electron and on density, electron and on temperature, electron and ion particle flux, electron and ion energies, electron and ion rangies, and data quality flags. Metadata Rights CC0-1.0: Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license. View XML | Edit Details Version:2.7.1 NumericalData ResourceID spase://NASA/NumericalData/LANL/1990/SOPA/PT60S NamingAuthority NASA ResourceType NumericalData ResourceHeader ResourceName LANL 1990 Geosynchronous Orbit Particle Analyzer (SOPA) at 60 sec Resolution in Spacecraft Coordinates AlternateName LANL 095 SOPA data DOI https://doi.org/10.48322/zzr5-dd89 ReleaseDate 2026-07-21 12:05:38Z RevisionHistory RevisionEvent ReleaseDate 2021-04-27 15:38:11Z Note Only known prior ReleaseDate of the metadata RevisionEvent ReleaseDate 2023-07-30 12:34:56.789Z Note Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 RevisionEvent ReleaseDate 2023-12-24 12:34:56.789Z Note Correct geosynchronous spelling as requested. Removed ftp link. Corrected CDAWeb url. JMW RevisionEvent ReleaseDate 2025-05-22 15:38:11Z Note Added ObservedRegion. JMW RevisionEvent ReleaseDate 2025-10-02 15:12:02Z Note Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB RevisionEvent ReleaseDate 2025-12-04 13:29:50Z Note Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB RevisionEvent ReleaseDate 2026-06-26 13:18:30Z Note Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB RevisionEvent ReleaseDate 2026-07-21 12:05:38Z Note Added HelioData InformationURL. JWL Description The LANL 1990-095 SOPA data set contains various parameters in a variety of coordinates systems including GEI, spacecraft, polar geographic, and polar magnetic coordinates at about 60 s resolution. These parameters include universal time, spacecraft location, electron and on density, electron and on temperature, electron and ion particle flux, electron and ion energies, electron and ion rangies, and data quality flags. Acknowledgement Los Alamos National Laboratory; Dr. Reiner Friedel PublicationInfo Authors Dors, E.; Friedel, R. PublicationDate 2023-01-01 00:00:00Z PublishedBy Space Physics Data Facility Contacts Role Person StartDate StopDate Note 1. GeneralContact spase://SMWG/Person/Eric.Dors 2. GeneralContact spase://SMWG/Person/Reiner.Friedel 3. MetadataContact spase://SMWG/Person/James.M.Weygand 4. MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze InformationURL Name Los Alamos Nation Laboratory spacecraft Synchronous Orbit Particle Analyzer (SOPA) URL https://doi.org/10.1029/92JA01139 Description Journal of Geophysical Research Article containing information on the LANL SOPA instrument. InformationURL Name HelioData URL https://helio.data.nasa.gov/dataset/LANL_1990_SOPA_PT60S Description The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more. PriorIDs spase://VSPO/NumericalData/P_LANL1990_HDR_SPA_60S spase://VMO/NumericalData/LANL/LANL1990/SOPA/PT60S spase://VMO/NumericalData/LANL/1990/SOPA/PT60S spase://VSPO/NumericalData/LANL/1990/SOPA/PT60S AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name HTTPS from SPDF URL https://spdf.gsfc.nasa.gov/pub/data/lanl/90_spa/ Description In CDF via HTTP from CDAWeb AccessURL Name CDAWeb URL https://cdaweb.gsfc.nasa.gov/pub/data/lanl/90_spa/ ProductKey L0_K0_SPA Format CDF AccessDirectoryTemplate https://cdaweb.gsfc.nasa.gov/pub/data/lanl/90_spa/$Y AccessFilenameTemplate l0_k0_spa_$Y$m$d_$v.cdf Acknowledgement LANL; Dr. Reiner Friedel AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open AccessURL Name CDAWeb Programmatic Data Access URL https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/L0_K0_SPA/clientLibraryExample/ Style WebService ProductKey L0_K0_SPA Description Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Format Binary Acknowledgement LANL; Dr. Reiner Friedel AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name CDAWeb HAPI Server URL https://cdaweb.gsfc.nasa.gov/hapi Style HAPI ProductKey L0_K0_SPA Description Web Service to this product using the HAPI interface. Format CSV Acknowledgement LANL; Dr. Reiner Friedel ProcessingLevel Calibrated ProviderResourceName LANL 1990-095 SOPA ProviderProcessingLevel Numerical Data InstrumentIDs spase://SMWG/Instrument/LANL/1990/SOPA MeasurementType EnergeticParticles TemporalDescription TimeSpan StartDate 1992-12-16 00:00:00Z StopDate 2005-11-09 23:59:59Z Note Time format in data files is: day, month, year hour, min, seconds. Ex: '01-Jan-1981 00:00:00.000' Cadence PT60S ObservedRegion Earth.Magnetosphere.Main ObservedRegion Earth.Magnetosphere.RadiationBelt ObservedRegion Earth.NearSurface.Plasmasphere Caveats Flags=-1.0e+31 Keywords 60 sec geosynchronous LANL Synchronous Orbit Particle Analyzer SOPA Parameter #1 Name LANL 095 SOPA Time of proton collection ParameterKey Epoch Description This is the time of the data collection time and date. Universal Time in data cell: day, month, year hour, min, seconds. Ex: '01-Jan-1981 00:00:00.000'. Caveats Interval centered time tag Units ms UnitsConversion '1.0e-3>s' RenderingHints AxisLabel Epoch ValidMin 01-08-1992T00:00:00.000 ValidMax 31-12-2020T23:59:59.000 FillValue -1.0000e+031 Support SupportQuantity Temporal Parameter #2 Name LANL 095 SOPA Time of proton collection ParameterKey Time_PB5 Description This is the time of the measurement. Time in the format: year, day of year, and second of the same day. Caveats Interval centered time tag RenderingHints AxisLabel Epoch Structure Size 3 Description Date and Time Vector. Element Name Year Index 1 Units Years ValidMin 1992 ValidMax 2020 Element Name Day of Year Index 2 Units Days ValidMin 0 ValidMax 366 Element Name milliseconds of the day Index 3 Units ms ValidMin 0 ValidMax 86399000 FillValue -2147483648 Support SupportQuantity Temporal Parameter #3 Name LANL 095 SOPA Spacecraft Position, Polar Geographic Coordinates ParameterKey sc_pos Description Spacecraft position, polar geographic coordinates (radius,lat,long). CoordinateSystem CoordinateRepresentation Spherical CoordinateSystemName GEO Structure Size 3 Description Polar Geographic Coordinates. Element Name Latitude Qualifier DirectionAngle.ElevationAngle Index 1 Units degrees ValidMin -90 ValidMax 90 Element Name Longitude Qualifier DirectionAngle.AzimuthAngle Index 2 Units degrees ValidMin -180 ValidMax 180 Element Name Radius Qualifier Magnitude Index 3 Units EarthRadii ValidMin 0 ValidMax 10 FillValue -1.0000e+031 Support Qualifier Vector SupportQuantity Positional Parameter #4 Name LANL 095 SOPA Temperature Electrons ParameterKey spa_e_temp Description Temperature of electrons in two energy bands(50 keV to 225 keV and 315 keV to 1.5 MeV). RenderingHints ScaleMin 0.0 ScaleMax 50.0 Structure Size 2 Element Name Low Energy Band (50 keV to 225 keV) Qualifier Component.I Index 1 Units keV ValidMin 0.0 ValidMax 50.0 Element Name High Energy Band (315 keV to 1.5 MeV) Qualifier Component.J Index 2 Units keV ValidMin 0.0 ValidMax 50.0 FillValue -1.0000e+031 Particle ParticleType Electron Qualifier Array ParticleQuantity Temperature EnergyRange Low 50 High 1500 Units keV/e Parameter #5 Name LANL 095 SOPA Temperature Protons ParameterKey spa_p_temp Description Temperature of protons in two energy bands (50 keV to 400 keV and 1.2 MeV to 5 MeV). RenderingHints ScaleMin 0.0 ScaleMax 50.0 Structure Size 2 Element Name Low Energy Band (50 keV to 400 keV) Qualifier Component.I Index 1 Units keV ValidMin 0.0 ValidMax 50.0 Element Name High Energy Band (1.2 MeV to 5 MeV) Qualifier Component.J Index 2 Units keV ValidMin 0.0 ValidMax 50.0 FillValue -1.0000e+031 Particle ParticleType Proton Qualifier Array ParticleQuantity Temperature EnergyRange Low 50 High 5000 Units keV/e Parameter #6 Name LANL 095 SOPA Density of Electrons ParameterKey spa_e_dens Description Density of electrons in two energy bands (50 keV to 225 keV and 315 keV to 1.5 MeV). UnitsConversion 1.0e6>m^-3 RenderingHints ScaleMin 0.01 ScaleMax 5000.0 Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 Units cm^-3 ValidMin 0.0 ValidMax 5000.0 Element Name High Energy Band Qualifier Component.J Index 2 Units cm^-3 ValidMin 0.0 ValidMax 5000.0 FillValue -1.0000e+031 Particle ParticleType Electron Qualifier Array ParticleQuantity NumberDensity EnergyRange Low 50 High 5000 Units keV/e Parameter #7 Name LANL 095 SOPA Density of Protons ParameterKey spa_p_dens Description Density of protons in two energy bands (50 keV to 400 keV and 1.2 MeV to 5 MeV). Units cm^-3 UnitsConversion 1.0e6>m^-3 RenderingHints ScaleMin 0.0 ScaleMax 5000.0 Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin 0.0 ValidMax 5000.0 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin 0.0 ValidMax 5000.0 FillValue -1.0000e+031 Particle ParticleType Proton Qualifier Array ParticleQuantity NumberDensity EnergyRange Low 50 High 5000 Units keV/e Parameter #8 Name LANL 095 SOPA Alpha Flux ParameterKey spa_a_flux Description Alpha particle flux (~0.9 MeV to ~1.3 Mev). Units alpha/(keV-cm2-ster-sec) RenderingHints ScaleMin 0.01 ScaleMax 50000.0 ValidMin 0.01 ValidMax 50000.0 FillValue -1.0000e+031 Particle ParticleType AlphaParticle Qualifier Scalar ParticleQuantity NumberFlux EnergyRange Low 0.9 High 1.3 Units MeV Parameter #9 Name LANL 095 SOPA Heavy Particle Flux ParameterKey spa_hvy_flx Description SOPA heavy particle flux (~5 MeV to ~15 MeV includes carbon, nitrogen, and oxygen). It is not clear if this flux is limited to carbon, nitrogen, and oxygen or if it includes more. Units #/(keV-cm2-ster-sec) RenderingHints ScaleMin 0.001 ScaleMax 500.0 ValidMin 0.0 ValidMax 500.0 FillValue -1.0000e+031 Particle ParticleType Ion Qualifier Scalar ParticleQuantity NumberFlux EnergyRange Low 5 High 15 Units MeV Parameter #10 Name LANL 095 SOPA Electron Flux ParameterKey spa_e_flx Description Electron flux (~50 keV to ~1.5 MeV). Units #/(keV-cm2-ster-sec) RenderingHints ScaleMin 0.1 ScaleMax 5000.0 ValidMin 0.1 ValidMax 50000.0 FillValue -1.0000e+031 Particle ParticleType Electron Qualifier Scalar ParticleQuantity NumberFlux EnergyRange Low 50 High 1500 Units keV Parameter #11 Name LANL 095 SOPA Proton Flux ParameterKey spa_p_flx Description Proton flux (~50 keV to ~5 MeV). Units #/(keV-cm2-ster-sec) RenderingHints ScaleMin 0.01 ScaleMax 5000.0 ValidMin 0.01 ValidMax 50000.0 FillValue -1.0000e+031 Particle ParticleType Proton Qualifier Scalar ParticleQuantity NumberFlux EnergyRange Low 50 High 5000 Units keV Parameter #12 Name LANL 095 SOPA Electron Energy ParameterKey ENERGY_E Description Electron energy in two energy bands (50 keV to 225 keV and 315 keV to 1.5 MeV). Structure Size 2 Element Name Low Energy Band in units of keV Qualifier Component.I Index 1 Units keV ValidMin 50 ValidMax 225 Element Name High Energy Band in units of keV Qualifier Component.J Index 2 Units keV ValidMin 315 ValidMax 1500.0 FillValue -1.0000e+031 Particle ParticleType Electron Qualifier Array ParticleQuantity Energy EnergyRange Low 50 High 1500 Units keV/e Parameter #13 Name LANL 095 SOPA Proton Energy ParameterKey ENERGY_P Description Proton energy in two energy bands (50 keV to 400 keV and 1.2 MeV to 5 MeV). Structure Size 2 Element Name Low Energy Band in units of keV Qualifier Component.I Index 1 Units keV ValidMin 50 ValidMax 400 Element Name High Energy Band in units of keV Qualifier Component.J Index 2 Units keV ValidMin 1200 ValidMax 5000.0 FillValue -1.0000e+031 Particle ParticleType Proton Qualifier Array ParticleQuantity Energy EnergyRange Low 50 High 5000 Units keV/e Parameter #14 Name LANL 095 SOPA Electron Energy Range Low ParameterKey E_MINUS Description Electron energy range lower uncertainty for the electron energy in the two energy bands (50 keV to 225 keV and 315 keV to 1.5 MeV). Structure Size 2 Element Name Low Energy Band in units of keV Qualifier Component.I Index 1 Units keV ValidMin 50 ValidMax 225 Element Name High Energy Band in units of keV Qualifier Component.J Index 2 Units keV ValidMin 315 ValidMax 1500.0 FillValue -1.0000e+031 Particle ParticleType Electron Qualifier Array ParticleQuantity Energy EnergyRange Low 50 High 1500 Units keV/e Parameter #15 Name LANL 095 SOPA Electron Energy Range High ParameterKey E_MINUS Description Electron energy range higher uncertainty for the electron energy in the two energy bands (50 keV to 225 keV and 315 keV to 1.5 MeV). Structure Size 2 Element Name Low Energy Band in units of keV Qualifier Component.I Index 1 Units keV ValidMin 50 ValidMax 225 Element Name High Energy Band in units of keV Qualifier Component.J Index 2 Units keV ValidMin 315 ValidMax 1500.0 FillValue -1.0000e+031 Particle ParticleType Electron Qualifier Array ParticleQuantity Energy EnergyRange Low 50 High 1500 Units keV/e Parameter #16 Name LANL 095 SOPA Proton Energy Range Low ParameterKey ENERGY_P Description Proton energy range lower uncertainty for the proton energy in the two energy bands (50 keV to 400 keV and 1.2 MeV to 5 MeV). Structure Size 2 Element Name Low Energy Band in units of keV Qualifier Component.I Index 1 Units keV ValidMin 50 ValidMax 400 Element Name High Energy Band in units of keV Qualifier Component.J Index 2 Units keV ValidMin 1200 ValidMax 5000.0 FillValue -1.0000e+031 Particle ParticleType Proton Qualifier Array ParticleQuantity Energy EnergyRange Low 50 High 5000 Units keV/e Parameter #17 Name LANL 095 SOPA Proton Energy Range High ParameterKey ENERGY_P Description Proton energy range higher uncertainty for the proton energy in the two energy bands (50 keV to 400 keV and 1.2 MeV to 5 MeV). Structure Size 2 Element Name Low Energy Band in units of keV Qualifier Component.I Index 1 Units keV ValidMin 50 ValidMax 400 Element Name High Energy Band in units of keV Qualifier Component.J Index 2 Units keV ValidMin 1200 ValidMax 5000.0 FillValue -1.0000e+031 Particle ParticleType Proton Qualifier Array ParticleQuantity Energy EnergyRange Low 50 High 5000 Units keV/e Parameter #18 Name LANL 095 SOPA Electron Data Quality Flag ParameterKey E_DQF Description Electron data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #19 Name LANL 095 SOPA Proton Data Quality Flag ParameterKey P_DQF Description Proton data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #20 Name LANL 095 SOPA Electron Temperature Data Quality Flag ParameterKey ET_DQF Description Electron temperature data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #21 Name LANL 095 SOPA Electron Density Data Quality Flag ParameterKey ED_DQF Description Electron density data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #22 Name LANL 095 SOPA Proton Temperature Data Quality Flag ParameterKey PT_DQF Description Proton temperature data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #23 Name LANL 095 SOPA Proton Density Data Quality Flag ParameterKey PD_DQF Description Proton density data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #24 Name LANL 095 SOPA Alpha Data Quality Flag ParameterKey A_DQF Description Alpha data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #25 Name LANL 095 SOPA CNO Flux Data Quality Flag ParameterKey CNO_DQF Description Heavy ion (CNO) data quality flag. Data quality flag: Unusable = -1, Suspect = 0, Good = 1. Structure Size 2 Element Name Low Energy Band Qualifier Component.I Index 1 ValidMin -1 ValidMax 1 Element Name High Energy Band Qualifier Component.J Index 2 ValidMin -1 ValidMax 1 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Parameter #26 Name LANL 095 SOPA Post Gap Flag ParameterKey gap_flag Description Data gap flag. Data gap flag: 0 = no gap in data; 1 = data for previous gap not available. RenderingHints AxisLabel Gap Flag ScaleMin 0.0 ScaleMax 20.0 ValidMin 0.0 ValidMax 20.0 FillValue -2147483648 Support Qualifier Scalar SupportQuantity Other Contact SPDF: NASA-SPDF Feedback/Support Responsible NASA Official: Lan Jian Site Editor: Rita Johnson SPDF ROR ID SPDF re3data ID About NASA Accessibility FOIA No FEAR Act Privacy Policy Vulnerability Disclosure Policy Last Updated: 2026-07-21