2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/SAMPEX/PCA/PT48M NASA NumericalData SAMPEX Polar-Cap-Averaged Fluxes, all instruments https://doi.org/10.48322/m7w8-8d83 2025-12-04T13:31:23Z 2021-04-27T15:38:11 Only known prior ReleaseDate of the metadata 2023-07-30T12:34:56.789 Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 2025-10-03T10:49:10Z 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 2025-12-04T13:31:23Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB This data set contains 17 differential fluxes of protons (mainly), helium ions, Z.GE.6 ions, and electrons, plus one integral flux of protons and electrons, as averaged over polar cap passes of the SAMPEX spacecraft. A polar cap pass covers the time poleward of geomagnetic latitude 70 deg. (Not all orbits have two polar cap passes.). For any given species, the fluxes typically come from more than one of the sensors (LICA, HILT, MAST, PET). Hence the inclusion of all instruments' data in each single record. Differential fluxes are those for (mainly) protons (Z.GE.1 channels at 5-12 and 19-27 MeV/n), helium ions (0.50-6.6, 4-9, 8-15, 9-38 MeV/n), Z.GE.6 ions (0.49-8.3, 8-42, 19.3-22.8, 22.8-31.0, 31.0-51.7, 41-220, 51.7-76.2, 76.2-113, 113-156 MeV/n), and electrons (1.5-6.0 MeV from PET only). One LICA channel measured integral fluxes of ions .GT. 0.8 MeV/n plus electrons .GT. 0.6 MeV). Data available for each polar cap pass are time tags of the begin and end points of the averaging interval, the fluxes, statistical uncertainties in the fluxes, instrument-specific flags, and a flag indicating a north or south polar cap pass. Data are organized in two different ways. Monthly ~500-KB ASCII files with records organized by instrument are available from the SAMPEX Data Center at Caltech and from nssdcftp at GSFC/SPDF, while monthly ~260 KB CDF-formatted files with records organized by species are available from the ftp area underlying CDAWeb. The parameter level information given below in this descriptor corresponds to the CDAWeb organization of data. Format information for the ASCII version is given in the Information URL of this descriptor. Mason, Glenn, M.; Mewaldt, Richard, A. 2023-01-01T00:00:00 Space Physics Data Facility; California Institute of Technology spase://SMWG/Person/Glenn.M.Mason PrincipalInvestigator spase://SMWG/Person/Richard.A.Mewaldt GeneralContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact Data descriptive text at Caltech http://www.srl.caltech.edu/sampex/DataCenter/docs/NSSDC_Level2_doc_v1-3.pdf Extensive PDF document prepared by M. Lennard, J. Mazur, and G. Mason originally in 1996 and most recently updated in 2007 to describe the many NSSDC-resident SAMPEX data sets, including the polar cap averaged fluxes. This document also identifies a series of mission and instrument papers at IEEE Transactions on Geoscience and Remote Sensing, Vol. 31, No. 3, May 1993 spase://VEPO/NumericalData/SAMPEX/PCA/PT48M spase://VSPO/NumericalData/SAMPEX/PCA/PT48M spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/sampex/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/sampex/ In CDF via HTTP from CDAWeb CDF spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=SX_K0_POF&index=sp_phys SX_K0_POF Plots, lists and files from CDAWeb.Name of the data resource:SX_K0_POF Text spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi SX_K0_POF Web Service to this product using the HAPI interface. CSV spase://SMWG/Repository/SAMPEX_DC Online Open SAMPEX Data Center http://www.srl.caltech.edu/sampex/DataCenter/DATA/polarcap/flux_polarcap_avgd_ascii/data/ In ASCII via ftp from SDC Text CALIBRATED spase://SMWG/Instrument/SAMPEX/MAST spase://SMWG/Instrument/SAMPEX/HILT spase://SMWG/Instrument/SAMPEX/PET spase://SMWG/Instrument/SAMPEX/LICA EnergeticParticles IonComposition 1992-07-06T00:00:00 2004-06-30T23:59:59 PT48M Earth.Magnetosphere Polar cap entry time entry_iso_time Time of entry into polar cap and of start of averaging of fluxes, expressed in ISO time format (YYYY_MM_DDTHH:MM:SS.SZ) Not every orbit reached poleward of 70 deg geomagnetic PT48M Temporal Polar cap exit time exit_iso_time Time of exit from polar cap and of end of averaging of fluxes, expressed in ISO time format (YYYY_MM_DDTHH:MM:SS.SZ) Not every orbit reached poleward of 70 deg geomagnetic PT48M Temporal Polar cap flag Polarcap_ID Takes value 0 for south pole pass, 1 for north pole pass PT48M Positional LICA flags lica_flag Four flags associated with the LICA instrument. See Information URL given above for meanings of flags and their values. PT48M 4 The 4 LICA flags Other HILT flags HILT_flag Six flags associated with the HILT instrument. See Information URL given above for meanings of flags and their values. PT48M 6 The 6 HILT flags Other MAST flags MAST_flag Three flags associated with the MAST instrument. See Information URL given above for meanings of flags and their values. PT48M 3 The 3 MAST flags Other PET flags PET_flag Three flags associated with the PET instrument. See Information URL given above for meanings of flags and their values. PT48M 3 The 3 PET flags Other Fluxes of Z.GE.6 ions zGT2_DID_FLX Polar-cap-averaged fluxes of Z.GE.6 ions in 9 energy bins listed above, from LICA, HILT and MAST instruments. We note a discrepancy between CDAWeb's use of "Z.GT.2" and the Project's use of "Z.GE.6" for these fluxes. See Appendix 7 of the document at the above referenced Information URL. PT48M 1/sec-cm**2-ster-MeV/n 9 The 9 Z.GE.6 fluxes -1.0E+31 Ion Average NumberFlux Fluxes of helium ions He_dif_flux Polar-cap-averaged fluxes of helium ions in 4 energy bins listed above, from LICA, HILT and MAST instruments PT48M 1/sec-cm**2-ster-MeV/n 4 The 4 Helium ion fluxes -1.0E+31 AlphaParticle Average NumberFlux Fluxes of protons Prot_Dif_Flux Polar-cap-averaged fluxes of protons in 2 energy bins listed above, from MAST and PET instruments. These are actually Z.GE.1 measurements. PT48M 1/sec-cm**2-ster-MeV/n 2 The 2 proton fluxes -1.0E+31 Proton Average NumberFlux Fluxes of electrons Elect_Dif_Flux Polar-cap-averaged fluxes of electrons in 2 energy bins listed above, from the PET instrument. PT48M 1/sec-cm**2-ster-MeV 2 The 2 electron fluxes -1.0E+31 Electron Average NumberFlux Integral fluxes of ions and electrons Int_Flux Polar-cap-averaged integral fluxes, mainly of protons above 0.8 MeV and electrons above 0.6 MeV, from LICA PT48M 1/sec-cm**2-ster -1.0E+31 Proton Electron Average NumberFlux Statistical uncertainites in fluxes of Z.GE.6 ions zGT2_FLX_SIG Statistical uncertainites in polar-cap-averaged fluxes of Z.GE.6 ions in 9 energy bins listed above, from LICA, HILT and MAST instruments PT48M 1/sec-cm**2-ster-MeV/n 9 Uncertainties in the 9 Z.GE.6 fluxes -1.0E+31 Ion StandardDeviation NumberFlux Statistical uncertainites in fluxes of helium ions He_flx_sigma Statistical uncertainites in polar-cap-averaged fluxes of helium ions in 4 energy bins listed above, from LICA, HILT and MAST instruments PT48M 1/sec-cm**2-ster-MeV/n 4 Uncertainties in the 4 helium fluxes -1.0E+31 AlphaParticle StandardDeviation NumberFlux Statistical uncertainites in fluxes of protons Prot_Flux_Sigma Statistical uncertainites in polar-cap-averaged fluxes of protons in 2 energy bins listed above, from MAST and PET instruments PT48M 1/sec-cm**2-ster-MeV/n 2 Uncertainties in the 2 proton fluxes -1.0E+31 Proton StandardDeviation NumberFlux Statistical uncertainites in fluxes of electrons Elect_Flx_Sigma Statistical uncertainites in polar-cap-averaged fluxes of electrons in 2 energy bins listed above, from PET instrument PT48M 1/sec-cm**2-ster-MeV 2 Uncertainties in the 2 electron fluxes -1.0E+31 Electron StandardDeviation NumberFlux Statistical uncertainties in ntegral fluxes of ions and electrons Int_Flux_sigma Statistical uncertainties in polar-cap-averaged integral fluxes, mainly of protons above 0.8 MeV and electrons above 0.6 MeV, from LICA PT48M 1/sec-cm**2-ster -1.0E+31 Proton Electron StandardDeviation NumberFlux