<_Note>Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness. 2.6.1 <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/ac_h1_sis_00000000_v01.json (from all.xml) spase://NASA/NumericalData/ACE/SIS/L2/PT256S <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json ACE/SIS Solar Isotope Spectrometer 256-sec Level 2 Data <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description AC_H1_SIS <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source The Solar Isotope Spectrometer (SIS) is designed to provide high resolution measurements of the isotopic composition of energetic nuclei from He to Ni (Z=2 to 28) over the energy range from ~10 to ~100 MeV/nucleon. During large solar events, when particle fluxes can increase over quiet-time values by factors of up to 10000, SIS measures the isotopic composition of the solar corona, while during solar quiet times SIS measures the isotopes of low-energy Galactic cosmic rays and the composition of the anomalous cosmic rays which are thought to originate in the nearby interstellar medium. The solar energetic particle measurements are useful to further our understanding of the Sun, while also providing a baseline for comparison with the Galactic cosmic ray measurements carried out by CRIS. SIS has a geometry factor of ~40 cm2--sr, which is significantly larger than previous satellite solar particle isotope spectrometers. It is also designed to provide excellent mass resolution during the extremely high particle flux conditions which occur during large solar particle events. <_Description>Source: Master/CDFglobalAttributes/TEXT <_Acknowledgement>Source: Master/CDFglobalAttributes/Acknowledgement <_Rights> SPDX Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html https://spdx.org/licenses/ Please acknowledge the Principal Investigator, E. C. Stone of Caltech, USA https://izw1.caltech.edu/ACE/ASC/level2/index.html The ACE Science Center Level 2 Data website Release notes and other info available at <_Note>URL also in all.xml. Using master. Rules of use, and caveats https://izw1.caltech.edu/ACE/ASC/level2/policy_lvl2.html ACE level 2 data rules of use, and caveats <_Note>Source: InformationURL.json 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 <_Note>Source: InformationURL.json ACE> Solar Isotope Spectrometer <_Caveats>Source: Master/CDFglobalAttributes/Rules_of_use https://doi.org/10.48322/9kmb-8280 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 1997-08-29T00:00:26Z 2026-07-08T23:56:45Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop PT4M16S <_Cadence>Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/ace/sis/level_2_cdaweb/sis_h1/1997/ac_h1_sis_19970829_v04.cdf. The most common cadence, 256000 [ms] = PT4M16S, occurred for 40.6528% of the 137 timesteps. <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json <_ProcessingLevel>Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json spase://SMWG/Instrument/ACE/SIS EnergeticParticles See the rules of use available from the ACE Science Center at: http://www.srl.caltech.edu/ACE/ASC/level2/policy_lvl2.html spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/ace/sis/level_2_cdaweb/sis_h1 In CDF via HTTP from CDAWeb ac_h1_sis_%Y%m%d_%Q.cdf %Y AC_H1_SIS CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/ace/sis/level_2_cdaweb/sis_h1 In CDF via HTTP from CDAWeb ac_h1_sis_%Y%m%d_%Q.cdf %Y AC_H1_SIS CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology CDAWeb Web Service https://cdaweb.gsfc.nasa.gov/WebServices/ Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made. AC_H1_SIS CDF CSV GIF NetCDF PNG PS PDF XML x_Script.IDL x_Script.Python Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=AC_H1_SIS AC_H1_SIS Web service user interface for this product. CDF GIF PDF Text.ASCII x_WAV spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/AC_H1_SIS/clientLibraryExample/ AC_H1_SIS Web service that generates a Python script to access this product. x_Script.IDL x_Script.Python spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/SSCWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=AC_H1_SIS AC_H1_SIS Web Service to this product. HTML spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=AC_H1_SIS AC_H1_SIS Web Service to this product using the HAPI interface. CSV JSON Binary spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=AC_H1_SIS&return=script AC_H1_SIS Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API. x_Script.IDL x_Script.Javascript x_Script.MATLAB x_Script.Python x_Script.Autoplot x_Script.curl x_Script.wget spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=AC_H1_SIS&format=gallery AC_H1_SIS Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG Advanced Composition Explorer (from all.xml/observatory/description/@short) ACE Solar Isotope Spectrometer (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Interplanetary Studies (from Master/CDFglobalAttributes/Discipline) AC (from Master/CDFglobalAttributes/Source_name) Advanced Composition Explorer (from Master/CDFglobalAttributes/Source_name) H1 (from Master/CDFglobalAttributes/Data_type) 256-sec Level 2 data (from Master/CDFglobalAttributes/Data_type) SIS (from all.xml/instrument/@ID) Heliosphere.Inner Heliosphere.NearEarth Heliosphere Time Epoch CATDESC: 'Time, beginning of interval'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.' ms Scalar Temporal Time PB5 Time_PB5 Master CDF CATDESC: 'Time, begining of interval'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' -2147483648 3 year day msec flux_He flux_He Master CDF CATDESC: 'He intensity, at 8 energies 3.4-41.2 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_C flux_C Master CDF CATDESC: 'C intensity, at 8 energies 6.4-76.3 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_N flux_N Master CDF CATDESC: 'N intensity, at 8 energies 6.9-83.3 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_O flux_O Master CDF CATDESC: 'O intensity, at 8 energies 7.3-89.8 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Ne flux_Ne Master CDF CATDESC: 'Ne intensity, at 8 energies 8.1-101.8 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Na flux_Na Master CDF CATDESC: 'Na intensity, at 8 energies 8.1-104.8 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Mg flux_Mg Master CDF CATDESC: 'Mg intensity, at 8 energies 8.7-112.9 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Al flux_Al Master CDF CATDESC: 'Al intensity, at 8 energies 8.7-115.6 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Si flux_Si Master CDF CATDESC: 'Si intensity, at 8 energies 9.2-123.2 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_S flux_S Master CDF CATDESC: 'S intensity, at 8 energies 9.7-132.9 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Ar flux_Ar Master CDF CATDESC: 'Ar intensity, at 8 energies 10.1-144.3 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Ca flux_Ca Master CDF CATDESC: 'Ca intensity, at 8 energies 10.5-150.9 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Fe flux_Fe Master CDF CATDESC: 'Fe intensity, at 8 energies 10.7-167.7 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 flux_Ni flux_Ni Master CDF CATDESC: 'Ni intensity, at 8 energies 11.2-179.0 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' 1/(cm2 Sr sec MeV/nucleon) -1e+31 8 cnt_He cnt_He Master CDF CATDESC: 'He counts, at 8 energies 3.4-41.2 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_C cnt_C Master CDF CATDESC: 'C counts, at 8 energies 6.4-76.3 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_N cnt_N Master CDF CATDESC: 'N counts, at 8 energies 6.9-83.3 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_O cnt_O Master CDF CATDESC: 'O counts, at 8 energies 7.3-89.8 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Ne cnt_Ne Master CDF CATDESC: 'Ne counts, at 8 energies 8.1-101.8 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Na cnt_Na Master CDF CATDESC: 'Na counts, at 8 energies 8.1-104.8 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Mg cnt_Mg Master CDF CATDESC: 'Mg counts, at 8 energies 8.7-112.9 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Al cnt_Al Master CDF CATDESC: 'Al counts, at 8 energies 8.7-115.6 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Si cnt_Si Master CDF CATDESC: 'Si counts, at 8 energies 9.2-123.2 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_S cnt_S Master CDF CATDESC: 'S counts, at 8 energies 9.7-132.9 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Ar cnt_Ar Master CDF CATDESC: 'Ar counts, at 8 energies 10.1-144.3 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Ca cnt_Ca Master CDF CATDESC: 'Ca counts, at 8 energies 10.5-150.9 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Fe cnt_Fe Master CDF CATDESC: 'Fe counts, at 8 energies 10.7-167.7 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8 cnt_Ni cnt_Ni Master CDF CATDESC: 'Ni counts, at 8 energies 11.2-179.0 MeV/nuc'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Counts/256sec -1e+31 8