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/SWICS_SWIMS/L2/ChargeState/PT2H NASA NumericalData ACE Solar Wind Ion Composition Spectrometer (SWICS) Solar Wind Plasma Elemental Charge State Distributions with Statistical Uncertainties and Data Quality Flags, Level 2 (L2), 2 h Data https://doi.org/10.48322/2c38-0s43 2025-12-04T13:28:26Z 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 2025-09-30T14:27:20Z 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 2025-12-04T13:28:26Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB This ACE SWICS/SWIMS Data Set contains actual Charge State, Q, Distributions of Carbon, Oxygen, Neon, Magnesium, Silicon and Iron as opposed to the averaged Charge States that have been available on CDAWeb for some time. The Solar Wind Ion Composition Spectrometer (SWICS), prior to August 23, 2011 and denoted as SWICS Version 1.1, determines uniquely the Chemical and Ionic Charge State Composition of the Solar Wind, the Temperatures and Mean Speeds of major Solar Wind Ions at all Speeds above 300 km/s for Protons and 170 km/s for Fe+16, and resolves Protons and Helium Isotopes of Solar and Interstellar Sources. SWICS 1.1 measures the Distribution Functions of Interstellar Cloud Pick-Up Ions and Interplanetary Dust Cloud Pick-Up Ions up to Energies of 100 keV/e. The ACE SWICS 1.1 Data Products represent a new Release of the Data with significantly improved Time Series Measurements for the Elemental Abundance, Charge State Composition, and Kinetic Properties of Heavy Ions in the Solar Wind. It is a major new Update produced with completely redesigned Analysis Methods to account more rigorously for Instrumental and Statistical Effects (Shearer et al., 2014). Rare Elements are now identified more reliably and Estimates of Statistical Error are provided. Release Notes are available that describe the Data, the Methods used to determine the Data Values, and Issues concerning Data Quality and Measurement Uncertainty. 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. For more Information about the SWICS Instrument, visit the SWICS Home Page at http://solar-heliospheric.engin.umich.edu/ace. G. Gloeckler, Please acknowledge the Principal Investigator, G. Gloeckler of University of Maryland See the Rules of Use available from the ACE Science Center at: http://www.srl.caltech.edu/ace/asc/level2/policy_lvl2.html. Gloeckler, George, M. 2023-01-01T00:00:00 Space Physics Data Facility spase://SMWG/Person/George.Gloeckler PrincipalInvestigator spase://SMWG/Person/Robert.E.McGuire MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact ACE Science Center Home Page for Level 2 Data Release Notes https://izw1.caltech.edu/ACE/ASC/level2/index.html ACE Level 2 Data Release Notes Home Page ACE Science Center Home Page for Level 2 Rules of Use https://izw1.caltech.edu/ACE/ASC/level2/policy_lvl2.html ACE Level 2 Rules of Use Home Page ACE Solar Wind Ion Composition Spectrometer (SWICS) Instrument Home Page at the University of Maryland https://space.umd.edu/umd_sensors/swics.html ACE SWICS Instrument Home Page at UM spase://VSPO/NumericalData/ACE/SWICS_SWIMS/L2/PT2HR_QState spase://VSPO/NumericalData/ACE/SWICS_SWIMS/L2/ChargeState/PT2H 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/ace/swics/level_2_cdaweb/swi_h5/ Access to Data in CDF Format via ftp from SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/ace/swics/level_2_cdaweb/swi_h5/ Access to Data in CDF Format via http from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=AC_H5_SWI&index=sp_phys AC_H5_SWI Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb CDF None https://cdaweb.gsfc.nasa.gov/pub/data/ace/swics/level_2_cdaweb/swi_h5/$Y ac_h5_swi_$Y$m$d_$v.cdf G. Gloeckler, Please acknowledge the Principal Investigator, G. Gloeckler of University of Maryland See the Rules of Use available from the ACE Science Center at: http://www.srl.caltech.edu/ace/asc/level2/policy_lvl2.html. Please acknowledge the Data Providers and CDAWeb when using these Data. 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_H5_SWI/clientLibraryExample/ AC_H5_SWI Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary G. Gloeckler, Please acknowledge the Principal Investigator, G. Gloeckler of University of Maryland See the Rules of Use available from the ACE Science Center at: http://www.srl.caltech.edu/ace/asc/level2/policy_lvl2.html. Please acknowledge the Data Providers and CDAWeb when using these Data. 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 AC_H5_SWI Web Service to this product using the HAPI interface. CSV G. Gloeckler, Please acknowledge the Principal Investigator, G. Gloeckler of University of Maryland See the Rules of Use available from the ACE Science Center at: http://www.srl.caltech.edu/ace/asc/level2/policy_lvl2.html. Please acknowledge the Data Providers and CDAWeb when using these Data. Calibrated spase://SMWG/Instrument/ACE/SWICS spase://SMWG/Instrument/ACE/SWIMS EnergeticParticles IonComposition 1998-02-04T00:00:00.000 2011-08-21T23:59:59.999 PT2H Heliosphere Heliosphere.Inner Heliosphere.NearEarth Epoch Time Epoch Epoch Time, Beginning of Interval Average Type: standard This Parameter exhibits an increasing Monotonic Progression. PT2H ms 1.0e-3>s Epoch E14.8 6.2987652219904e+13 6.3745034619904e+13 LinearScale 01-Jan-1996 00:00:00.000 01-Jan-2020 00:00:00.000 -1.0e+31 Temporal C Charge State Distribution, Qi Time Series defined by using: EPOCH qdistC Carbon, C, Charge State Distribution, Qi for Charge States from 4 to 6 The Charge State Distribution is the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(C) F10.4 LinearScale 3 Q_4(C) 1 Q_5(C) 2 Q_6(C) 3 0.0 1.0 -1.0e+31 Ion Array ChargeState 6 C Charge State Distribution, Qi, Uncertainty Time Series defined by using: EPOCH qdistC_err Carbon, C, Charge State Distribution, Qi for Charge States from 4 to 6, Statistical Uncertainty qdistC_err is the Statistical Uncertainty in the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(C)_err F10.4 LinearScale 3 Q_4(C)_err 1 Q_5(C)_err 2 Q_6(C)_err 3 0.0 1.0 -1.0e+31 Ion Array ChargeState 6 C Charge State Distribution, Flag Time Series defined by using: EPOCH qflagsC Carbon, C, Charge State Distribution, Qi for Charge States from 4 to 6, Data Quality Flag 0=Good Quality, Non-Zero=See Release Notes PT2H TimeSeries Qflag_i(C) I2 LinearScale 3 Qflag_4(C) 1 Qflag_5(C) 2 Qflag_6(C) 3 0 8 -1 Other O Charge State Distribution, Qi Time Series defined by using: EPOCH qdistO Oxygen, O, Charge State Distribution, Qi for Charge States from 5 to 8 The Charge State Distribution is the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(O) F10.4 LinearScale 4 Q_5(O) 1 Q_6(O) 2 Q_7(O) 3 Q_8(O) 4 0.0 1.0 -1.0e+31 Ion Array ChargeState 8 O Charge State Distribution, Qi, Uncertainty Time Series defined by using: EPOCH qdistO_err Oxygen, O, Charge State Distribution, Qi for Charge States from 5 to 8, Statistical Uncertainty qdistO_err is the Statistical Uncertainty in the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(O)_err F10.4 LinearScale 4 Q_5(O)_err 1 Q_6(O)_err 2 Q_7(O)_err 3 Q_8(O)_err 4 0.0 1.0 -1.0e+31 Ion Array ChargeState 8 O Charge State Distribution, Flag Time Series defined by using: EPOCH qflagsO Oxygen, O, Charge State Distribution, Qi for Charge States from 5 to 8, Data Quality Flag 0=Good Quality, Non-Zero=See Release Notes PT2H TimeSeries Qflag_i(O) I2 LinearScale 4 Qflag_5(O) 1 Qflag_6(O) 2 Qflag_7(O) 3 Qflag_8(O) 4 0 8 -1 Other Ne Charge State Distribution, Qi Time Series defined by using: EPOCH qdistNe Neon, Ne, Charge State Distribution, Qi for Charge States from 6 to 9 The Charge State Distribution is the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Ne) F10.4 LinearScale 2 Q_8(Ne) 1 Q_9(Ne) 2 0.0 1.0 -1.0e+31 Ion Array ChargeState 10 Ne Charge State Distribution, Qi, Uncertainty Time Series defined by using: EPOCH qdistNe_err Neon, Ne, Charge State Distribution, Qi for Charge States from 6 to 9, Statistical Uncertainty qdistNe_err is the Statistical Uncertainty in the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Ne)_err F10.4 LinearScale 2 Q_8(Ne)_err 1 Q_9(Ne)_err 2 0.0 1.0 -1.0e+31 Ion Array ChargeState 10 Ne Charge State Distribution, Flag Time Series defined by using: EPOCH qflagsNe Neon, Ne, Charge State Distribution, Qi for Charge States from 6 to 9, Data Quality Flag 0=Good Quality, Non-Zero=See Release Notes PT2H TimeSeries Qflag_i(Ne) I2 LinearScale 2 Qflag_8(Ne) 1 Qflag_9(Ne) 2 0 8 -1 Other Mg Charge State Distribution, Qi Time Series defined by using: EPOCH qdistMg Magnesium, Mg, Charge State Distribution, Qi for Charge States from 6 to 12 The Charge State Distribution is the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Mg) F10.4 LinearScale 7 Q_6(Mg) 1 Q_7(Mg) 2 Q_8(Mg) 3 Q_9(Mg) 4 Q_10(Mg) 5 Q_11(Mg) 6 Q_12(Mg) 7 0.0 1.0 -1.0e+31 Ion Array ChargeState 12 Mg Charge State Distribution, Qi, Uncertainty Time Series defined by using: EPOCH qdistMg_err Magnesium, Mg, Charge State Distribution, Qi for Charge States from 6 to 12, Statistical Uncertainty qdistMg_err is the Statistical Uncertainty in the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Mg)_err F10.4 LinearScale 7 Q_6(Mg)_err 1 Q_7(Mg)_err 2 Q_8(Mg)_err 3 Q_9(Mg)_err 4 Q_10(Mg)_err 5 Q_11(Mg)_err 6 Q_12(Mg)_err 7 0.0 1.0 -1.0e+31 Ion Array ChargeState 12 Mg Charge State Distribution, Flag Time Series defined by using: EPOCH qflagsMg Magnesium, Mg, Charge State Distribution, Qi for Charge States from 6 to 12, Data Quality Flag 0=Good Quality, Non-Zero=See Release Notes PT2H TimeSeries Qflag_i(Mg) I2 LinearScale 7 Qflag_6(Mg) 1 Qflag_7(Mg) 2 Qflag_8(Mg) 3 Qflag_9(Mg) 4 Qflag_10(Mg) 5 Qflag_11(Mg) 6 Qflag_12(Mg) 7 0 8 -1 Other Si Charge State Distribution, Qi Time Series defined by using: EPOCH qdistSi Silicon, Si, Charge State Distribution, Qi for Charge States from 6 to 12 The Charge State Distribution is the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Si) F10.4 LinearScale 7 Q_6(Si) 1 Q_7(Si) 2 Q_8(Si) 3 Q_9(Si) 4 Q_10(Si) 5 Q_11(Si) 6 Q_12(Si) 7 0.0 1.0 -1.0e+31 Ion Array ChargeState 14 Si Charge State Distribution, Qi, Uncertainty Time Series defined by using: EPOCH qdistSi_err Silicon, Si, Charge State Distribution, Qi for Charge States from 6 to 12, Statistical Uncertainty qdistSe_err is the Statistical Uncertainty in the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Si)_err F10.4 LinearScale 7 Q_6(Si)_err 1 Q_7(Si)_err 2 Q_8(Si)_err 3 Q_9(Si)_err 4 Q_10(Si)_err 5 Q_11(Si)_err 6 Q_12(Si)_err 7 0.0 1.0 -1.0e+31 Ion Array ChargeState 14 Si Charge State Distribution, Flag Time Series defined by using: EPOCH qflagsSi Silicon, Si, Charge State Distribution, Qi for Charge States from 6 to 12, Data Quality Flag 0=Good Quality, Non-Zero=See Release Notes PT2H TimeSeries Qflag_i(Si) I2 LinearScale 7 Qflag_6(Si) 1 Qflag_7(Si) 2 Qflag_8(Si) 3 Qflag_9(Si) 4 Qflag_10(Si) 5 Qflag_11(Si) 6 Qflag_12(Si) 7 0 8 -1 Other Fe Charge State Distribution, Qi Time Series defined by using: EPOCH qdistFe Iron, Fe, Charge State Distribution, Qi for Charge States from 6 to 20 The Charge State Distribution is the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Fe) F10.4 LinearScale 15 Q_6(Fe) 1 Q_7(Fe) 2 Q_8(Fe) 3 Q_9(Fe) 4 Q_10(Fe) 5 Q_11(Fe) 6 Q_12(Fe) 7 Q_13(Fe) 8 Q_14(Fe) 9 Q_15(Fe) 10 Q_16(Fe) 11 Q_17(Fe) 12 Q_18(Fe) 13 Q_19(Fe) 14 Q_20(Fe) 15 0.0 1.0 -1.0e+31 Ion Array ChargeState 26 Fe Charge State Distribution, Qi, Uncertainty Time Series defined by using: EPOCH qdistFe_err Iron, Fe, Charge State Distribution, Qi for Charge States from 6 to 20, Statistical Uncertainty qdistFe_err is the Statistical Uncertainty in the Abundance of each Charge State relative to the total Abundance for analyzed Ions of the specified Element. PT2H TimeSeries Q_i(Fe)_err F10.4 LinearScale 15 Q_6(Fe)_err 1 Q_7(Fe)_err 2 Q_8(Fe)_err 3 Q_9(Fe)_err 4 Q_10(Fe)_err 5 Q_11(Fe)_err 6 Q_12(Fe)_err 7 Q_13(Fe)_err 8 Q_14(Fe)_err 9 Q_15(Fe)_err 10 Q_16(Fe)_err 11 Q_17(Fe)_err 12 Q_18(Fe)_err 13 Q_19(Fe)_err 14 Q_20(Fe)_err 15 0.0 1.0 -1.0e+31 Ion Array ChargeState 26 Fe Charge State Distribution, Flag Time Series defined by using: EPOCH qflagsFe Iron, Fe, Charge State Distribution, Qi for Charge States from 6 to 20, Data Quality Flag 0=Good Quality, Non-Zero=See Release Notes PT2H TimeSeries Qflag_i(Fe) I2 LinearScale 15 Qflag_6(Fe) 1 Qflag_7(Fe) 2 Qflag_8(Fe) 3 Qflag_9(Fe) 4 Qflag_10(Fe) 5 Qflag_11(Fe) 6 Qflag_12(Fe) 7 Qflag_13(Fe) 8 Qflag_14(Fe) 9 Qflag_15(Fe) 10 Qflag_16(Fe) 11 Qflag_17(Fe) 12 Qflag_18(Fe) 13 Qflag_19(Fe) 14 Qflag_20(Fe) 15 0 8 -1 Other