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/ACE/EPAM/L2/PT12S NASA NumericalData ACE Electron Proton Alpha Monitor (EPAM) 12-sec Level 2 Data https://doi.org/10.48322/jqj0-vn49 2025-12-04T13:28:12Z 2021-04-27T15:38:11 Only known prior ReleaseDate of the metadata 2022-07-25T12:34:56.789 Added DOI and PublicationInfo by JMW 2022-06-02, revised NumericalData ResourceID, added Prior ID, updated three InformationURL URLs, metadata updated to SPASE 2.4.1, reviewed by LFB 20220724 2023-08-26T12:34:56.789 Corrected PriorID, metadata updated to SPASE 2.6.0, reviewed by LFB 20230826 2025-09-02T12:34:56.789 Update ObservedRegion. JMW 2025-09-30T14:27:06Z 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 2025-12-04T13:28:12Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB ACE EPAM Electron Proton Alpha Monitor (EPAM) Level 2 intensities at 12-sec time resolution. Calibrated science quality data. The data are accessible via ftp in HDF and CDF from the ACE Science Center and CDAWeb, respectively, and in ASCII format from the value-added interfaces at those sites. The "parameter keys" given below are as used by CDAWeb. Please acknowledge the ACE/EPAM instrument team and the ACE Science Center Gold, R. E., Roelof, E. C., Krimigis, S., Haggerty, D., Armstrong, T., Manweiler, J. W., and Patterson, J. D. 2022-04-27T12:17:00Z Space Physics Data Facility; California Institute of Technology spase://SMWG/Person/Dennis.Haggerty TechnicalContact spase://SMWG/Person/Robert.E.Gold CoInvestigator spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact ACE Electron Proton Alpha Monitor (EPAM) Level 2 data Home Page https://izw1.caltech.edu/ACE/ASC/level2/epam_l2desc.html A web site hosting instrument information, data release notes, as well as web utilities for plotting and downloading data Rules of use, and caveats https://izw1.caltech.edu/ACE/ASC/level2/policy_lvl2.html ACE level 2 data rules of use, and caveats spase://VSPO/NumericalData/ACE/EPAM/L2_PT12S spase://NASA/NumericalData/ACE/EPAM/L2_PT12S spase://SMWG/Repository/NASA/GSFC/SPDF 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/ace/epam/level_2_cdaweb/epm_h3/ FTP repository of 12-sec ACE/EPAM L2 data in CDF format at CDAWeb HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/ace/epam/level_2_cdaweb/epm_h3/ In CDF via HTTP from SPDF CDF Please acknowledge the ACE/EPAM instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF. spase://SMWG/Repository/NASA/GSFC/SPDF 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=AC_H3_EPM&index=sp_phys AC_H3_EPM ACE/EPAM L2 12-sec data with subset, plot, list from CDAWeb Text https://cdaweb.gsfc.nasa.gov/pub/data/ace/epam/level_2_cdaweb/epm_h3/$Y ac_h3_epm_$Y$m$d_$v.cdf Please acknowledge the ACE/EPAM instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF. spase://SMWG/Repository/NASA/GSFC/SPDF Online Open CDAWeb Programmatic Data Access https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/AC_H3_EPM/clientLibraryExample/ AC_H3_EPM Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary Please acknowledge the ACE/EPAM instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF. spase://SMWG/Repository/NASA/GSFC/SPDF 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 AC_H3_EPM Web Service to this product using the HAPI interface. CSV Please acknowledge the ACE/EPAM instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF. spase://SMWG/Repository/ACE_SC Online Open ACE Science Center ftp area ftp://mussel.srl.caltech.edu/pub/ace/level2/epam/ FTP repository of 12-sec ACE/EPAM L2 data in HDF format at ACE Science Center HDF Please acknowledge the ACE/EPAM instrument team and the ACE Science Center spase://SMWG/Repository/ACE_SC Online Open ACE Science Center https://izw1.caltech.edu/ACE/ASC/level2/lvl2DATA_EPAM.html ACE/EPAM L2 12-sec data with subset, plot, list from the ACE Science Center Text Please acknowledge the ACE/EPAM instrument team and the ACE Science Center ACE EPAM Level 2 Data, 12-sec averages Level 2 5 spase://SMWG/Instrument/ACE/EPAM EnergeticParticles 1997-08-31T00:00:00Z -P4M PT12S Heliosphere Heliosphere.Inner Heliosphere.NearEarth The quality of ACE level 2 data is such that it is suitable for serious scientific study. However, to avoid confusion and misunderstanding, it is recommended that users consult with the appropriate ACE team members before publishing work derived from the data The ACE team has worked hard to ensure that the level 2 data are free from errors, but the team cannot accept responsibility for erroneous data, or for misunderstandings about how the data may be used. This is especially true if the appropriate ACE team members are not consulted before publication. At the very least, preprints should be forwarded to the ACE team before publication. Time Epoch Number of milliseconds since CDF_EPOCH: 0000-01-01T00:00:00.000. Timestamp marks beginning of interval PT5M ms 1.0e-3 > s 28-Aug-1997 00:00:00.000 01-Jan-2024 00:00:00.000 -1.0E31 Temporal Time PB5 Time_PB5 Time of observation in year, day of year, and milliseconds. Timestamp marks beginning of interval PT5M 3 Year 1 1997 2020 -2147483648 Day of year 2 1 366 -2147483648 Milliseconds of day 3 0 86401000 -2147483648 Temporal P1 P1 LEMS30 0.047-0.065 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.047 0.065 MeV P2 P2 LEMS30 0.065-0.112 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.065 0.112 MeV P3 P3 LEMS30 0.112-0.187 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.112 0.187 MeV P4 P4 LEMS30 0.187-0.310 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.187 0.310 MeV P5 P5 LEMS30 0.310-0.580 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.310 0.580 MeV P6 P6 LEMS30 0.580-1.06 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.580 1.06 MeV P7 P7 LEMS30 1.06-1.91 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 1.06 1.91 MeV P8 P8 LEMS30 1.91-4.75 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 1.91 4.75 MeV unc_P1 unc_P1 Fractional uncertainty (statistical) in the P1 flux Ratio Ion Uncertainty NumberFlux unc_P2 unc_P2 Fractional uncertainty (statistical) in the P2 flux Ratio Ion Uncertainty NumberFlux unc_P3 unc_P3 Fractional uncertainty (statistical) in the P3 flux Ratio Ion Uncertainty NumberFlux unc_P4 unc_P4 Fractional uncertainty (statistical) in the P4 flux Ratio Ion Uncertainty NumberFlux unc_P5 unc_P5 Fractional uncertainty (statistical) in the P5 flux Ratio Ion Uncertainty NumberFlux unc_P6 unc_P6 Fractional uncertainty (statistical) in the P6 flux Ratio Ion Uncertainty NumberFlux unc_P7 unc_P7 Fractional uncertainty (statistical) in the P7 flux Ratio Ion Uncertainty NumberFlux unc_P8 unc_P8 Fractional uncertainty (statistical) in the P8 flux Ratio Ion Uncertainty NumberFlux DE1 DE1 DE 0.038-0.053 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.038 0.053 MeV DE2 DE2 DE 0.053-0.103 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.053 0.103 MeV DE3 DE3 DE 0.103-0.175 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.103 0.175 MeV DE4 DE4 DE 0.175-0.315 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.175 0.315 MeV unc_DE1 unc_DE1 Fractional uncertainty (statistical) in the DE1 flux Ratio Electron Uncertainty NumberFlux unc_DE2 unc_DE2 Fractional uncertainty (statistical) in the DE2 flux Ratio Electron Uncertainty NumberFlux unc_DE3 unc_DE3 Fractional uncertainty (statistical) in the DE3 flux Ratio Electron Uncertainty NumberFlux unc_DE4 unc_DE4 Fractional uncertainty (statistical) in the DE4 flux Ratio Electron Uncertainty NumberFlux W3 W3 CA60 0.389-1.28 MeV/nuc. He Flux) 1/(cm^2 s sr MeV/nuc.) AlphaParticle Differential NumberFlux 0.389 1.28 MeV W4 W4 CA60 1.28-6.98 MeV/nuc. He Flux) 1/(cm^2 s sr MeV/nuc.) AlphaParticle Differential NumberFlux 1.28 6.98 MeV W5 W5 CA60 0.465-1.71 MeV/nuc. CNO Flux) 1/(cm^2 s sr MeV/nuc.) Ion Differential NumberFlux 0.465 1.71 MeV W6 W6 CA60 1.71-19.1 MeV/nuc. CNO Flux) 1/(cm^2 s sr MeV/nuc.) Ion Differential NumberFlux 1.71 19.1 MeV W7 W7 CA60 0.239-0.840 MeV/nuc. Fe (9 lt Z lt 29) Flux) 1/(cm^2 s sr MeV/nuc.) Ion Differential NumberFlux 0.239 0.840 MeV W8 W8 CA60 0.840-92.7 MeV/nuc. Fe (9 lt Z lt 29) Flux) 1/(cm^2 s sr MeV/nuc.) Ion Differential NumberFlux 0.840 92.7 MeV unc_W3 unc_W3 Fractional uncertainty (statistical) in the W3 flux Ratio AlphaParticle Uncertainty NumberFlux unc_W4 unc_W4 Fractional uncertainty (statistical) in the W4 flux Ratio AlphaParticle Uncertainty NumberFlux unc_W5 unc_W5 Fractional uncertainty (statistical) in the W5 flux Ratio Ion Uncertainty NumberFlux unc_W6 unc_W6 Fractional uncertainty (statistical) in the W6 flux Ratio Ion Uncertainty NumberFlux unc_W7 unc_W7 Fractional uncertainty (statistical) in the W7 flux Ratio Ion Uncertainty NumberFlux unc_W8 unc_W8 Fractional uncertainty (statistical) in the W8 flux Ratio Ion Uncertainty NumberFlux E1p E1p LEFS60 0.045-0.062 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.045 0.062 MeV E2p E2p LEFS60 0.062-0.103 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.062 0.103 MeV E3p E3p LEFS60 0.103-0.175 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.103 0.175 MeV E4p E4p LEFS60 0.175-0.312 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.175 0.312 MeV FP5p FP5p LEFS60 0.546-0.761 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.546 0.761 MeV FP6p FP6p LEFS60 0.761-1.22 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.761 1.22 MeV FP7p FP7p LEFS60 1.22-4.97 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 1.22 4.97 MeV unc_E1p unc_E1p Fractional uncertainty (statistical) in the E1p flux Ratio Electron Uncertainty NumberFlux unc_E2p unc_E2p Fractional uncertainty (statistical) in the E2p flux Ratio Electron Uncertainty NumberFlux unc_E3p unc_E3p Fractional uncertainty (statistical) in the E3p flux Ratio Electron Uncertainty NumberFlux unc_E4p unc_E4p Fractional uncertainty (statistical) in the E4p flux Ratio Electron Uncertainty NumberFlux unc_FP5p unc_FP5p Fractional uncertainty (statistical) in the FP5p flux Ratio Ion Uncertainty NumberFlux unc_FP6p unc_FP6p Fractional uncertainty (statistical) in the FP6p flux Ratio Ion Uncertainty NumberFlux unc_FP7p unc_FP7p Fractional uncertainty (statistical) in the FP7p flux Ratio Ion Uncertainty NumberFlux Z2 Z2 WARTD Z>1 E>0.7 MeV Ion Flux 1/(cm^2-s-sr) Ion Integral NumberFlux 0.7 1000 MeV Z2A Z2A WARTD Z>7 E>7.5 MeV Ion Flux 1/(cm^2-s-sr) Ion Integral NumberFlux 7.5 1000 MeV Z3 Z3 WARTD Z>5 E>2.5 MeV Ion Flux 1/(cm^2-s-sr) Ion Integral NumberFlux 2.5 1000 MeV Z4 Z4 WARTD Z>10 E>9.0 MeV Ion Flux 1/(cm^2-s-sr) Ion Integral NumberFlux 9.0 1000 MeV unc_Z2 unc_Z2 Fractional uncertainty (statistical) in the Z2 flux Ratio Ion Uncertainty NumberFlux unc_Z2A unc_Z2A Fractional uncertainty (statistical) in the Z2A flux Ratio Ion Uncertainty NumberFlux unc_Z3 unc_Z3 Fractional uncertainty (statistical) in the Z3 flux Ratio Ion Uncertainty NumberFlux unc_Z4 unc_Z4 Fractional uncertainty (statistical) in the Z4 flux Ratio Ion Uncertainty NumberFlux P1p P1p LEMS120 0.047-0.066 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.047 0.066 MeV P2p P2p LEMS120 0.066-0.114 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.066 0.114 MeV P3p P3p LEMS120 0.114-0.190 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.114 0.190 MeV P4p P4p LEMS120 0.190-0.310 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.190 0.310 MeV P5p P5p LEMS120 0.310-0.580 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.310 0.580 MeV P6p P6p LEMS120 0.580-1.05 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.580 1.05 MeV P7p P7p LEMS120 1.05-1.89 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 1.05 1.89 MeV P8p P8p LEMS120 1.89-4.75 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 1.89 4.75 MeV unc_P1p unc_P1p Fractional uncertainty (statistical) in the P1p flux Ratio Ion Uncertainty NumberFlux unc_P2p unc_P2p Fractional Uncertainty (statistical) in the P2p flux Ratio Ion Uncertainty NumberFlux unc_P3p unc_P3p Fractional uncertainty (statistical) in the P3p flux Ratio Ion Uncertainty NumberFlux unc_P4p unc_P4p Fractional uncertainty (statistical) in the P4p flux Ratio Ion Uncertainty NumberFlux unc_P5p unc_P5p Fractional uncertainty (statistical) in the P5p flux Ratio Ion Uncertainty NumberFlux unc_P6p unc_P6p Fractional uncertainty (statistical) in the P6p flux Ratio Ion Uncertainty NumberFlux unc_P7p unc_P7p Fractional uncertainty (statistical) in the P7p flux Ratio Ion Uncertainty NumberFlux unc_P8p unc_P8p Fractional uncertainty (statistical) in the P8p flux Ratio Ion Uncertainty NumberFlux E1 E1 LEFS150 0.045-0.062 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.045 0.062 MeV E2 E2 LEFS150 0.062-0.102 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.062 0.102 MeV E3 E3 LEFS150 0.102-0.175 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.102 0.175 MeV E4 E4 LEFS150 0.175-0.312 MeV Electron Flux 1/(cm^2 s sr MeV) Electron Differential NumberFlux 0.175 0.312 MeV FP5 FP5 LEFS150 0.540-0.765 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.540 0.765 MeV FP6 FP6 LEFS150 0.765-1.22 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 0.765 1.22 MeV FP7 FP7 LEFS150 1.22-4.94 MeV Ion Flux 1/(cm^2 s sr MeV) Ion Differential NumberFlux 1.22 4.94 MeV unc_E1 unc_E1 Fractional uncertainty (statistical) in the E1 flux Ratio Electron Uncertainty NumberFlux unc_E2 unc_E2 Fractional uncertainty (statistical) in the E2 flux Ratio Electron Uncertainty NumberFlux unc_E3 unc_E3 Fractional uncertainty (statistical) in the E3 flux Ratio Electron Uncertainty NumberFlux unc_E4 unc_E4 Fractional uncertainty (statistical) in the E4 flux Ratio Electron Uncertainty NumberFlux unc_FP5 unc_FP5 Fractional uncertainty (statistical) in the FP5 flux Ratio Ion Uncertainty NumberFlux unc_FP6 unc_FP6 Fractional uncertainty (statistical) in the FP6 flux Ratio Ion Uncertainty NumberFlux unc_FP7 unc_FP7 Fractional uncertainty (statistical) in the FP7 flux Ratio Ion Uncertainty NumberFlux