<_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/pioneervenus_coho1hr_merged_mag_plasma_00000000_v01.json (from all.xml) spase://NASA/NumericalData/PioneerVenusOrbiter/MAGandPLS/PT1H <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json PioneerVenus merged hourly magnetic field, plasma and ephermis data <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description PioneerVenus_coho1hr_merged_mag_plasma <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source PIONEER VENUS ORBITER (PVO) was the first orbiter mission designed to conduct a comprehensive and long term investigation of the planet Venus. PVO measured the detailed structure of the upper atmosphere and ionosphere of Venus and investigated the interaction of the solar wind magnetic field and plasma with the venusian ionosphere. Over the years 1978-1992 PVO provided nearly continuous measurements of the solar wind from its highly eccentric orbit around Venus.PI of magnetic field data: Dr. T. C. Russell, UCLA.PI of plasma data: Dr. Aaron Barnes, Ames Research Center, NASA. plasma data were provided by Dr. P. Gazis, Ames,NASA.For the hourly resolution records, thePVO directory contains files with hourly averages for selected parameters of the interplanetary magnetic field (1978-12-05 - 1988-08-07) solar wind plasma (1978-12-05 - 1992-10-08) and the spacecraft trajectory (1978-12-05 - 1992-12-31) in RTN, and in Venus-centered (1978-12-05 - 1988-08-07) coordinates. These were data taken from time intervals when the spacecraft was outside the bow shock of the venusian ionosphere and in the solar wind.Time Coverage of merged files: 78-12-05 - 92-12-31.PVO data have been reprocessed to ensure a uniformity of content and coordinate systems relative to data from other deep-space missions:- All spacecraft trajectory data were transformed to a Heliographic Inertial (HGI) coordinate system.- calculation of RTN components of interplanetary magnetic field from VSO coordinates.- merging of trajectory coordinates, magnetic field data, and plasma data files into a single annual file PVO_YR.ascii, where YR is the year;- Data gaps were filled with dummy numbers for the missing hours or entire days to make all files of equal length. The character \'9\' is used to fill all fields for missing data according to their format, e.g. \' 9999.9\' for a field with the FORTRAN format F7.1. Note that format F7.1 below really means (1X,F6.1),etc.The Heliographic Inertial (HGI) coordinates are Sun-centered and inertially fixed with respect to an X-axis directed along the intersection line of the ecliptic and solar equatorial planes. The solar equator plane is inclined at 7.25 degrees from the ecliptic. This direction was towards ecliptic longitude of 74.36 degrees on 1 January 1900 at 1200 UT; because of precession of the celestial equator, this longitude increases by 1.4 degrees/century. The Z axis is directed perpendicular and northward from the solar equator, and the Y-axis completes the right-handed set. This system differs from the usual heliographic coordinates (e.g. Carrington longitudes) which are fixed in the frame of the rotating Sun.The RTN system is fixed at a spacecraft (or the planet). The R axis is directed radially away from the Sun, the T axis is the cross product of the solar rotation axis and the R axis, and the N axis is the cross product of R and T. At zero Heliographic Latitude when the spacecraft is in the solar equatorial plane the N and solar rotation axes are parallel.Venus Solar Orbital (VSO) coordinates are defined with respect to the orbital plane of Venus which is tilted about two degrees from the Ecliptic. The VSO system is Venus-centered with the X axis towards the Sun, the Z axis northward and perpendicular to the orbital plane, and the Y axis completing the right hand system.Acknowledgement: Hour averages of the interplanetary solar wind data from, and hourly heliocentric coordinates of, PVO and other interplanetary spacecraft may be also be accessed and plotted on-line through the COHOWeb service http://cohoweb.gsfc.nasa.gov/ <_Description>Source: Master/CDFglobalAttributes/TEXT COHOWeb System <_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/ https://omniweb.gsfc.nasa.gov/coho/html/cw_data.html Documentation COHO dataset <_Note>URL also in all.xml. Using master. http://cohoweb.gsfc.nasa.gov COHOWeb service Additional analysis tools for these data from the <_Note>URL also in all.xml. Using master. Readme file from SPDF https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer_venus/merged/coho1hr_magplasma_ascii/pvomgd.txt <_Note>Source: InformationURL.json https://doi.org/10.48322/f172-0b94 <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json 1978-12-05T00:00:00Z 1992-12-31T23:00:00Z <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop PT1H <_Cadence>Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/pioneer/pioneer_venus/merged/coho1hr_magplasma_cdaweb/1978/pioneervenus_coho1hr_merged_mag_plasma_19781205_v01.cdf. The most common cadence, 3600000 [ms] = PT1H, occurred for all 647 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/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames HTTPS from SPDF https://cdaweb.gsfc.nasa.gov/pub/data/pioneer/pioneer_venus/merged/coho1hr_magplasma_cdaweb In CDF via HTTP from CDAWeb pioneervenus_coho1hr_merged_mag_plasma_%Y%m%d_%Q.cdf %Y PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames FTPS from SPDF ftps://cdaweb.gsfc.nasa.gov/pub/data/pioneer/pioneer_venus/merged/coho1hr_magplasma_cdaweb In CDF via HTTP from CDAWeb pioneervenus_coho1hr_merged_mag_plasma_%Y%m%d_%Q.cdf %Y PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA CDF spase://SMWG/Repository/NASA/GSFC/SPDF Online Open SPDF/CDAWeb. Please also acknowledge the data producer: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames 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. PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA 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: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames CDAWeb Web Service user interface https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA 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: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames CDAWeb Python Script https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA/clientLibraryExample/ PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA 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: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames 4D Orbit Viewer https://sscweb.gsfc.nasa.gov/4dorbit/?sc=PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA 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: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames CDAWeb HAPI Server https://hapi-server.org/servers/#server=CDAWeb&dataset=PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA 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: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames CDAWeb HAPI Script in Multiple Languages https://hapi-server.org/servers/#server=CDAWeb&dataset=PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA&return=script PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA 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: Dr. T. C. Russell (magnetic field), Dr. Aaron Barnes (plasma) at UCLA, NASA/Ames HAPI visualizations https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA&format=gallery PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA Web Service that generates plots. See https://hapi-server.org/plot/ for the API. PNG PDF SVG PioneerVenus (from all.xml/observatory/description/@short) Merged Trajectory, Magnetic Field, and Plasma (from all.xml/instrument/description/@short) Space Physics (from Master/CDFglobalAttributes/Discipline) Interplanetary Studies (from Master/CDFglobalAttributes/Discipline) PioneerVenus (from Master/CDFglobalAttributes/Source_name) COHO1HR (from Master/CDFglobalAttributes/Data_type) 1 Hour Time Resolution from cohoweb (from Master/CDFglobalAttributes/Data_type) MAGPLASMA (from all.xml/instrument/@ID) Heliosphere.Inner Venus spase://SMWG/Instrument/PioneerVenusOrbiter/OMAG spase://SMWG/Instrument/PioneerVenusOrbiter/ORPA MagneticField ThermalPlasma Epoch Epoch CATDESC: 'Default time'. 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.' Scalar Temporal X VSO X_VSO Master CDF CATDESC: 'X in VSO (Venus Solar Orbital) coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' RV -1e+31 Y VSO Y_VSO Master CDF CATDESC: 'Y in VSO coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' RV -1e+31 Z VSO Z_VSO Master CDF CATDESC: 'Z in VSO coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' RV -1e+31 Radial Distance radialDistance Master CDF CATDESC: 'Radial Distance from Sun to Venus'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' Au -1e+31 HGI Latitude heliographicLatitude Master CDF CATDESC: 'HelioGraphic Inertial (HGI) latitude'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' deg -1e+31 HGI Longitude heliographicLongitude Master CDF CATDESC: 'HGI longitude'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' deg -1e+31 BX VSO BX_VSO Master CDF CATDESC: 'BX in VSO (Venus Solar Orbital) coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' nT -1e+31 BY VSO BY_VSO Master CDF CATDESC: 'BY in VSO coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' nT -1e+31 BZ VSO BZ_VSO Master CDF CATDESC: 'BZ in VSO coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' RV -1e+31 BR (RTN) BR Master CDF CATDESC: 'BR in RTN (Radial-Tangential-Normal) coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' nT -1e+31 BT (RTN) BT Master CDF CATDESC: 'BT in RTN coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' nT -1e+31 BN (RTN) BN Master CDF CATDESC: 'BN in RTN coordinate system'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' nT -1e+31 B B Master CDF CATDESC: 'B-Field magnitude (average of fine scale field magnitudes)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' nT -1e+31 Bulk flow speed flowSpeed Master CDF CATDESC: 'Proton flow speed'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' km/s -1e+31 elevation angle elevAngle Master CDF CATDESC: 'Proton flow elevation angle / latitude (RTN)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' deg -1e+31 azimuth angle azimuthAngle Master CDF CATDESC: 'Proton flow azimuth angle / longitude (RTN)'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' deg -1e+31 Plasma proton density protonDensity Master CDF CATDESC: 'Proton density'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' n/cc -1e+31 Plasma proton Temperature protonTemp Master CDF CATDESC: 'Proton Temperature'. Master CDF VAR_NOTES: ''. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.' deg K -1e+31