2.7.2 https://spdx.org/licenses/ 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/IMP7/LEPEDEA/PT120S NASA NumericalData IMP 7 LANL 2-m plasma data 2026-09-25T11:30:17 2020-07-07T21:14:38Z Only known prior ReleaseDate of the metadata 2025-12-04T13:29:33Z Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB 2026-06-26T13:17:53Z Add 'Z' to TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB 2026-07-21T12:05:21Z Added HelioData InformationURL. JWL 2026-09-25T11:30:17 Added Publication Info TLK IMP 7 LANL 2-min solar wind plasma parameter data, including temperature anisotropy and alpha/proton ratio Ness, Norman F. 2020-07-07T21:14:38Z Space Physics Data Facility spase://SMWG/Person/John.T.Gosling GeneralContact spase://SMWG/Person/James.M.Weygand MetadataContact spase://SMWG/Person/Norman.F.Ness ProjectScientist HelioData https://helio.data.nasa.gov/dataset/IMP7_LEPEDEA_PT120S The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more. spase://VSPO/NumericalData/P_IMP7_HDR_LANL_2MIN spase://VMO/NumericalData/IMP7/LANL/PT120S spase://VSPO/NumericalData/IMP7/LEPEDEA/PT120S spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ 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 FTPBrowser https://omniweb.gsfc.nasa.gov/ftpbrowser/imp7_lanl_2m.html FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/imp/imp7/plasma_lanl/solarwind_2min/ HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/imp/imp7/plasma_lanl/solarwind_2min/ In CDF via HTTP from SPDF Text National Aeronautics and Space Administration; National Space Science Data Center and Space Physics Data Facility, Dr John Gosling Calibrated Los Alamos National Laboratory IMP-7 Solar Plasma Electrostatic Analyzer data Calibrated spase://SMWG/Instrument/IMP7/LEPEDEA spase://SMWG/Instrument/IMP7/GOSLING ThermalPlasma 1972-10-06T00:00:00Z 1978-09-30T00:00:00Z PT120S Heliosphere.NearEarth Earth.Magnetosphere Earth.NearSurface Spacecraft Identification Column_1 String identifying the spacecraft. In this dataset it should be IMP7. PT120S Other Universal Time Column_2 Column_3 Column_4 The three universal time columns from left to right are: year month day (yymmdd), seconds of the day, and hour minute second (hhmmss). PT120S 3 Universal Time expressed in two columns yymmdd and hhmms. Year Month Day (yymmdd) 1 Column_2 Seconds of the day 2 Column_3 seconds Hour Minute Second (hhmmss) 3 Column_4 Temporal IMP7 Spacecraft Position Vector in Solar Ecliptic coordinates Column_5 Column_6 Column_7 Location of the spacecraft in solar ecliptic coordinates in units of kilometers and degrees. PT120S Spherical SE 3 Radius Component.I 1 column_5 km SELat Component.J 2 column_6 degrees SELong Component.K 3 column_7 degrees Positional IMP7 Density Column_8 IMP7 density values in units of #/cm^3. PT120S #/cm^3 Proton Magnitude NumberDensity IMP7 Flow Speed Column_9 IMP7 speed values in units of km/s. PT120S km/s Proton Magnitude FlowSpeed IMP7 Flow Azimuth Column_10 IMP7 flow azimuth direction in units of degrees. PT120S degrees Proton Magnitude ArrivalDirection Proton Parallel Temperature Column_11 Proton temprature in the parallel direction in units of Kelvin. PT120S K Proton Parallel Temperature Proton Perpendicular Temperature Column_12 Proton temprature in the perpendicular direction in units of Kelvin. PT120S K Proton Perpendicular Temperature Pressure Tensor Symmetry Axis, AZ Column_13 Pressure tensor symmetry axis in units of degrees. PT120S degrees Proton DirectionAngle Pressure Alpha proton ratio Column_14 Ratio of alphas to protons. PT120S AlphaParticle Proton Ratio NumberDensity Flow Speed AP Column_15 Relative flow speed of alphas to protons in units of km/s. PT120S km/s AlphaParticle Proton Magnitude FlowSpeed Flow Azimuth AP Column_16 Relative Flow Angle of alphas to protons in units of degrees. PT120S degrees AlphaParticle Proton Magnitude ArrivalDirection Alpha proton temperature ratio Column_17 Ratio of the temperature of the alphas to the temperature of the protons. PT120S AlphaParticle Proton Ratio Temperature Alpha Temperature Anisotropy Column_18 Alpha temperature anisotropy of perpendicular temperature to parallel temperature. PT120S AlphaParticle Anisotropy Temperature Alpha Pressure Tensor Symmetry Axis, AZ Column_19 Alpha pressure tensor symmetry axis in units of degrees. PT120S degrees AlphaParticle DirectionAngle Pressure