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/PioneerVenusOrbiter/MAGandPLS/PT1H NASA NumericalData Pioneer Venus Orbiter (PVO) hourly merged magnetic field and plasma data https://doi.org/10.48322/f172-0b94 2025-12-04T13:30:57Z 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 2025-10-03T10:48:54Z 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 2025-12-04T13:30:57Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB This is an hourly resolution, merged magnetic field and plasma data set created at NSSDC for COHOWeb. Magnetic field vectors and plasma flow direction angles are given in RTN coordinates. Spacecraft position data are given in Heliographic inertial (HGI coordinates). Please acknowledge the magnetic field and plasma Principal Investigators, Drs. C.T. Russell and P. Gazis, and NSSDC or GSFC-SPDF Russell, Christopher, T.; Gazis, Paul, R.; Papitashvili, Natalia, E. 2023-01-01T00:00:00 Space Physics Data Facility spase://SMWG/Person/Christopher.T.Russell PrincipalInvestigator spase://SMWG/Person/Paul.R.Gazis PrincipalInvestigator spase://SMWG/Person/Natalia.E.Papitashvili GeneralContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact Readme file from SPDF https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer_venus/merged/coho1hr_magplasma_ascii/pvomgd.txt spase://VHO/NumericalData/Pioneer_Venus/MAGandPLS/PT1H spase://VSPO/NumericalData/PioneerVenusOrbiter/MAGandPLS/PT1H 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/pioneer/pioneer_venus/merged/ for annual files via ftp HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer_venus/merged/ In CDF via HTTP from SPDF CDF 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 https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA&index=sp_phys PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA COHOWeb plots and lists https://omniweb.gsfc.nasa.gov/coho/form/pvo.html Pioneer_Venus-specific page for plots and lists COHOweb top page https://omniweb.gsfc.nasa.gov/coho/ Plots, lists, scatter plots, regressions, distributions, means, etc. Text Please acknowledge the magnetic field and plasma Principal Investigators, Drs. E. Smith and P. Gazis, and NSSDC or GSFC-SPDF 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 PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA Web Service to this product using the HAPI interface. CSV Please acknowledge the magnetic field and plasma Principal Investigators, Drs. E. Smith and P. Gazis, and NSSDC or GSFC-SPDF spase://SMWG/Instrument/PioneerVenusOrbiter/OMAG spase://SMWG/Instrument/PioneerVenusOrbiter/ORPA MagneticField ThermalPlasma 1978-12-05T00:00:00 1992-10-09T00:00:00 Plasma data end on Oct. 9, 1992. Magnetic field data end on Aug. 7, 1988. PT1H Heliosphere.Inner Year Column1 Four digit Year PT1H 999.9999 Temporal Day Column2 Decimal Day of Year PT1H 999.9999 Temporal Hour Column3 Hour PT1H 999.9999 Temporal PVO Location relative to Venus Pioneer Venus location relative to the center of Venus, in Venus Solar Orbital coordinates (x from Venus to sun, z northward from Venus orbit plane) The data set contains Venus-centered PVO location in Venus Solar Orbital coordinates. (X from Venus to sun, Z positive northward from Venus orbit plane). This coordinate system is presently not available in the data model. "SSE" (spacecraft solar ecliptic) is used as an approximation. Most if not all heliospheric studies for which hourly data are used, assuming the data were taken as the location of the center of Venus should be fine. PT1H Rv Cartesian SSE 3 X,Y,Z components X component Component.I 1 Column04 Y component Component.J 2 Column05 Z component Component.K 3 Column06 9999.9 Positional Venus radial distance Column07 Heliocentric radial distance of Planet Venus in AU PT1H AU Positional Venus latitude Column08 Heliographic Inertial elevation angle of Planet Venus in deg PT1H deg Spherical HGI Positional Venus longitude Column09 Heliographic Inertial azimuthal angle of Planet Venus in deg PT1H deg Spherical HGI Positional Magnetic Field Vector Hourly averages of XYZ components of fine time scale magnetic field vectors. Coordinate System is Venus Solar Orbital (VSO) PT1H nT 3 X, Y, Z components in Venus Solar Orital (VSO) coordinates X component Component.I 1 Column10 Y component Component.J 2 Column11 Z component Component.K 3 Column12 999.9999 Vector Magnetic Magnetic Field Vector Hourly averages of RTN components of fine time scale magnetic field vectors PT1H nT Cartesian RTN 3 R,T,N components R component Component.I 1 Column13 T component Component.J 2 Column14 N component Component.K 3 Column15 999.9999 Vector Magnetic Magnetic Field Magnitude Column16 Hourly average of fine time scale magnetic field magnitudes PT1H nT 999.99 Magnitude Magnetic Flow speed Column17 Hourly averaged solar wind plasma flow speed PT1H km/s 9999.9 Proton Average FlowSpeed Flow elevation angle Column18 Hourly averaged solar wind plasma flow elevation angle PT1H deg Spherical RTN 9999.9 Proton DirectionAngle.ElevationAngle FlowVelocity Flow azimuth angle Column19 Hourly averaged solar wind plasma flow azimuthal angle PT1H Spherical RTN 9999.9 Proton DirectionAngle.AzimuthAngle FlowVelocity Density Column20 Hourly averaged solar wind plasma density PT1H n/cc 999.9999 Proton Average NumberDensity Temperature Column21 Hourly averaged solar wind plasma temperature PT1H degK 9999999. Proton Average Temperature