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/STEREO-B/IMPACT/SWEA/L1/PT30S NASA NumericalData STEREO-B In-Situ Measurements of Particles and CME Transients (IMPACT) Solar Wind Electron Analyzer (SWEA) 3-Dimensional Electron Distributions, Level 1 (L1), 30 s Data https://doi.org/10.48322/qxwm-ja11 2025-12-04T13:31:38Z 2021-04-27T15:38:11 Only known prior ReleaseDate of the metadata 2023-07-31T12:34:56.789 Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 2025-10-03T10:49:14Z 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 2025-12-04T13:31:38Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB The file contains Level 1 3D electron distributions from the In-situ Measurements of Particles and CME Transients, IMPACT, SWEA instrument on the STEREO Behind spacecraft. For important usage caveats see https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html. Please acknowledge the Principal Investigator J.G. Luhmann for use of the Data Luhmann, Janet, G.; Schroeder, Peter 2023-01-01T00:00:00 Space Physics Data Facility spase://SMWG/Person/Janet.G.Luhmann PrincipalInvestigator spase://SMWG/Person/Peter.Schroeder DataProducer spase://SMWG/Person/Robert.M.Candey MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact STEREO IMPACT Instrument web site, UCB http://sprg.ssl.berkeley.edu/impact/ STEREO In-Situ Measurements of Particles and CME Transients, IMPACT, instrument experiment and data description web site, hosted by University of California, Berkeley en STEREO IMPACT SWEA Data Caveats web page, GSFC https://cdaweb.gsfc.nasa.gov/stereo_swea_caveats.html STEREO In-Situ Measurements of Particles and CME Transients, IMPACT, Solar Wind Electron Analyzer, SWEA, Data Caveats web page, hosted by NASA GSFC en NSSDC Master Catalog, STEREO B, IMPACT instrument https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2006-047B-03 General information concerning the STEREO B, In-Situ Measurements of Particles and CME Transients, IMPACT, instrument en spase://VSPO/NumericalData/P_STEREO-B_HDR_IMPACT_SWEA_30sec_3D_Distributions spase://VSPO/NumericalData/STEREO-B/IMPACT/SWEA/PT30S spase://VSPO/NumericalData/STEREO-B/IMPACT/SWEA/L1/PT30S 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/stereo/behind/l1/impact/swea_dist/ Access to Data in CDF Format via ftp from SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_dist/ Access to Data in CDF Format via http from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=STB_L1_SWEA_DIST&index=sp_phys STB_L1_SWEA_DIST Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb CDF None https://cdaweb.gsfc.nasa.gov/pub/data/stereo/behind/l1/impact/swea_dist/$Y stb_l1_swea_dist_$Y$m$d_$v.cdf Please acknowledge the Principal Investigator J.G. Luhmann. 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/STB_L1_SWEA_DIST/clientLibraryExample/ STB_L1_SWEA_DIST Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Binary Please acknowledge the Principal Investigator J.G. Luhmann. 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 STB_L1_SWEA_DIST Web Service to this product using the HAPI interface. CSV Please acknowledge the Principal Investigator J.G. Luhmann. Please acknowledge the Data Providers and CDAWeb when using these Data. spase://SMWG/Repository/STEREO/IMPACT Online Open Download of STEREO-B IMPACT/SWEA Level 1 data http://stereo.ssl.berkeley.edu/L1_data.php A web site hosting the STEREO IMPACT Level 1 data CDF Calibrated spase://SMWG/Instrument/STEREO-B/IMPACT/SWEA ElectricField EnergeticParticles InstrumentStatus 2006-10-28T20:05:49.000 2014-09-27T16:30:41.000 PT30S Heliosphere.Remote1AU Since commissioning, the SWEA instruments on both STEREO spacecraft have registered difficult to characterize degradations in the solar wind core electron energies, probably due to charging effects. The nature of the degradations are such that the data are not reliable for electron measurements below 45 eV. However, halo and higher energy electrons are unaffected. Versions 4 and higher of the SWEA 3D distribution data products have these lower energies removed. Similarly, Versions 4 and higher of the SWEA pitch angle distribution products also remove these energies. Use of the SWEA pitch angle distributions for most purposes, for example, higher energy heat flux pitch angle distribbutions, PADs, should be largely unaffected. For more information regarding these issues, please contact Peter Schroeder, peters@ssl.berkeley.edu. If you have downloaded Version 3 or earlier Files, those files contain unreliable data below 45 eV and should be replaced with Version 4 files. Note that if the interpretation of these data become a significant focus in your work, you should obtain explicit prior permission from the PI of the experiment before publication. Epoch Time Epoch Epoch Time Tag, time since 0 AD, interval centered PT30S ms 1.0e-3>s Epoch 01-Jan-1990 00:00:00.000 31-Dec-2020 00:00:00.000 31-Dec-9999 23:59:59.999 Temporal Electron Count Distribution, Time Interval Time series defined by using: EPOCH SWEADistInterval Electron Three-Dimensional Count Distribution, data collection time Interval PT30S s Dist Time Interval E13.6 0.0 100000.0 -1.0e+31 Temporal SWEA Instrument Mode ID Time series defined by using: EPOCH SWEAModeID Solar Wind Electron Analyzer, SWEA, Instrument Mode ID PT30S SWEA Mode I2 -127 127 -128 Scalar InstrumentMode Electron Count Distribution, Angle Bins Angle_Bins Electron Count Distribution, 80 Angle Bins PT30S Angle Bin I3 80 0 80 4294967295 Array Other Electron 3D Energy-Angle Count Distribution Time series defined by using: EPOCH Distribution Electron Three-Dimensional Count Distribution, Energy versus Angle display, do not use energies below 45 eV. * Column 1 Labels from ENERGY: ["Dist @ 1720 eV","Dist @ 1060 eV","Dist @ 651 eV","Dist @ 401 eV","Dist @ 247 eV","Dist @ 152 eV","Dist @ 93.5 eV","Dist @ 57.5 eV","Dist @ 35.4 eV","Dist @ 21.8 eV","Dist @ 13.4 eV","Dist @ 8.27 eV","Dist @ 5.09 eV","Dist @ 3.13 eV","Dist @ 1.93 eV","Dist @ 1.19 eV"]. * Column 2 Labels from ANGLE_BINS: ["Dist @ Angle 1","Dist @ Angle 2","Dist @ Angle 3","Dist @ Angle 4","Dist @ Angle 5","Dist @ Angle 6","Dist @ Angle 7","Dist @ Angle 8","Dist @ Angle 9","Dist @ Angle 10","Dist @ Angle 11","Dist @ Angle 12","Dist @ Angle 13","Dist @ Angle 14","Dist @ Angle 15","Dist @ Angle 16","Dist @ Angle 17","Dist @ Angle 18","Dist @ Angle 19","Dist @ Angle 20","Dist @ Angle 21","Dist @ Angle 22","Dist @ Angle 23","Dist @ Angle 24","Dist @ Angle 25","Dist @ Angle 26","Dist @ Angle 27","Dist @ Angle 28","Dist @ Angle 29","Dist @ Angle 30","Dist @ Angle 31","Dist @ Angle 32","Dist @ Angle 33","Dist @ Angle 34","Dist @ Angle 35","Dist @ Angle 36","Dist @ Angle 37","Dist @ Angle 38","Dist @ Angle 39","Dist @ Angle 40","Dist @ Angle 41","Dist @ Angle 42","Dist @ Angle 43","Dist @ Angle 44","Dist @ Angle 45","Dist @ Angle 46","Dist @ Angle 47","Dist @ Angle 48","Dist @ Angle 49","Dist @ Angle 50","Dist @ Angle 51","Dist @ Angle 52","Dist @ Angle 53","Dist @ Angle 54","Dist @ Angle 55","Dist @ Angle 56","Dist @ Angle 57","Dist @ Angle 58","Dist @ Angle 59","Dist @ Angle 60","Dist @ Angle 61","Dist @ Angle 62","Dist @ Angle 63","Dist @ Angle 64","Dist @ Angle 65","Dist @ Angle 66","Dist @ Angle 67","Dist @ Angle 68","Dist @ Angle 69","Dist @ Angle 70","Dist @ Angle 71","Dist @ Angle 72","Dist @ Angle 73","Dist @ Angle 74","Dist @ Angle 75","Dist @ Angle 76","Dist @ Angle 77","Dist @ Angle 78","Dist @ Angle 79","Dist @ Angle 80"]. PT30S Spectrogram E13.6 16 80 -1.0e+31 Electron Differential Array NumberFlux SWEA Bias Voltage Time series defined by using: EPOCH V0 Solar Wind Electron Analyzer, SWEA, Instrument Bias Voltage, V₀. The bias voltage sweep pattern was altered to reduce low energy electron contributions from unanticipated spacecraft-related secondaries. The voltage bias were originally swept from 1 eV to 2000 eV but the lower limit sweep voltage was later updated to 8 eV. PT30S V0 I3 LinearScale -127 127 -128 Magnitude Scalar Potential Electron Count Distribution, Energy Bins Energy Electron Count Distribution, 16 Energy Bins PT30S eV 1.602176565e-19>J Energy E12.2 LinearScale 16 1.0 2000.0 -1.0e+31 Electron Differential Array Energy