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/SIS/L2/KP/PT1H NASA NumericalData ACE Solar Isotope Spectrometer (SIS) 1-Hour Level 2 Key Parameter Data https://doi.org/10.48322/1fgf-zm82 2025-12-04T13:28:25Z 2021-04-27T15:38:11 Last known prior metadata Release Date 2022-04-20T00:00:00 ACE: DOI and PublicationInfo added, metadata revised by J.M. Weygand on 2022-04-08, reviewed by LFB 2022-05-17T12:34:56.789 ACE: Updated to SPASE Version 2.4.0, two InformationURL URLs updated, one AccessURL URL updated, revised by LFB on 2022-05-17 2025-09-02T12:34:56.789 Update ObservedRegion. JMW 2025-09-30T14:27:19Z 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 2025-12-04T13:28:25Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB ACE Solar Isotope Spectrometer (SIS) hourly intensities and count rates, for each of 14 elements (He,C,N,O,Ne,Na,Mg,Al,Si,S,Ar,Ca,Fe,Ni).in each of 8 energy bins. Overall energy ranges covered go from 3.4-41 MeV/n for helium to 10.5-168 MeV/n for iron. These are 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/SIS instrument team and the ACE Science Center Davis, A.J., Christian, E.R., Wiedenbeck, M.E., Cohen, C.M., Stone, E.C., de Nolfo, G.A., Labrador, A.W., Leske, R.A., Mewaldt, R.A., von Rosenvinge, T., and Cummings, A.C. 2022-04-27T00:00:00 Space Physics Data Facility; California Institute of Technology spase://SMWG/Person/C.M.S.Cohen TechnicalContact spase://SMWG/Person/Richard.A.Mewaldt CoInvestigator ACE Solar Isotope Spectrometer (SIS) Level 2 data Home Page https://izw1.caltech.edu/ACE/ASC/level2/sis_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://VHO/NumericalData/ACE/SIS/L2_KP_PT1H spase://VSPO/NumericalData/ACE/SIS/PT3600S spase://VSPO/NumericalData/P_ACE_HDR_SIS_3600S spase://VSPO/NumericalData/ACE/SIS/L2/KP/PT1H 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/sis/level_2_cdaweb/sis_k0/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/ace/sis/level_2_cdaweb/sis_k0/ In CDF via HTTP from CDAWeb CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=AC_K0_SIS&index=sp_phys AC_K0_SIS For plots, numeric lists, and user specified files CDF https://cdaweb.gsfc.nasa.gov/pub/data/ace/sis/level_2_cdaweb/sis_k0/$Y ac_k0_sis_$Y$m$d_$v.cdf Please acknowledge the ACE/SIS 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_K0_SIS/clientLibraryExample/ AC_K0_SIS Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary Please acknowledge the ACE/SIS 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_K0_SIS Web Service to this product using the HAPI interface. CSV Please acknowledge the ACE/SIS instrument team, the ACE Science Center, and the CDAWeb team at GSFC/SPDF spase://SMWG/Repository/ACE_SC Online Open ASC https://izw1.caltech.edu/ACE/ASC/level2/lvl2DATA_SIS.html Plots and lists of user-selected parameters Text Please acknowledge the ACE/SIS instrument team and the ACE Science Center spase://SMWG/Repository/ACE_SC Online Open FTP area at ASC ftp://mussel.srl.caltech.edu/pub/ace/level2/sis/ In HDF via ftp from the ACE Science center HDF Please acknowledge the ACE/SIS instrument team and the ACE Science Center ACE SIS Level 2 Key Parameter Data, 1-hour averages Level 2 3 spase://SMWG/Instrument/ACE/SIS EnergeticParticles 1997-08-29T00:00:00Z -P2M PT1H 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 PT1H 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 PT1H 3 Year 1 1997 2020 -2147483648 Day of year 2 1 366 -2147483648 Milliseconds of day 3 0 86401000 -2147483648 Temporal H Particle Flux (>10 MeV) H_lo H Particle Flux (>10 MeV) Proton Flux E>10 MeV - During solar quiet times, these fluxes are contaminated by background from particles entering from the sides of the instrument. 1/(cm2 s ster MeV) 0 10000 -1e31 Proton NumberFlux H Particle Flux (>30 MeV) H_hi H Particle Flux (>30 MeV) Proton Flux E>30 MeV - During solar quiet times, these fluxes are contaminated by background from particles entering from the sides of the instrument. 1/(cm2 s ster MeV) 0 10000 -1e31 Proton NumberFlux C, N, O Particle Flux (7-10 MeV/n) CNO_lo C, N, O Particle Flux (7-10 MeV/n) Note that the energy intervals for the most abundant elements C, N, and O all differ somewhat from the nominal values of 7 to 10 MeV/nuc. 1/(cm2 s ster MeV/n) 0 10000 -1e31 Ion NumberFlux C, N, O Particle Flux (10-15 MeV/n) CNO_hi C, N, O Particle Flux (10-15 MeV/n) Note that the energy intervals for the most abundant elements C, N, and O all differ somewhat from the nominal values of 10 to 15 MeV/nuc. 1/(cm2 s ster MeV/n) 0 10000 -1e31 Ion NumberFlux Z>10 Particle Flux (9-21 MeV/n) Z_ge_10 Z>=10 (9-21 MeV/n) Note that the quoted energy interval of ~9 to 21 MeV/nuc is strictly valid only for Si. For Ne the corresponding interval is ~8 to ~17 MeV/nuc, while for Fe it is ~12 to ~26 MeV/nuc. 1/(cm2 s ster MeV/n) 0 10000 -1e31 Ion NumberFlux