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Pioneer Venus Orbiter (PVO) hourly merged magnetic field and plasma data

ResourceID
spase://NASA/NumericalData/PioneerVenusOrbiter/MAGandPLS/PT1H

Description

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).

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/PioneerVenusOrbiter/MAGandPLS/PT1H
ResourceHeader
ResourceName
Pioneer Venus Orbiter (PVO) hourly merged magnetic field and plasma data
ReleaseDate
2020-07-07 21:15:08Z
Description

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).

Acknowledgement
Please acknowledge the magnetic field and plasma Principal Investigators, Drs. C.T. Russell and P. Gazis, and NSSDC or GSFC-SPDF
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Christopher.T.Russell
2.PrincipalInvestigatorspase://SMWG/Person/Paul.R.Gazis
3.GeneralContactspase://SMWG/Person/Natalia.E.Papitashvili
InformationURL
PriorIDs
spase://VHO/NumericalData/Pioneer_Venus/MAGandPLS/PT1H
spase://VSPO/NumericalData/PioneerVenusOrbiter/MAGandPLS/PT1H
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

for annual files via ftp

AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

Format
CDF
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
ProductKey
PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA
Description

PIONEERVENUS_COHO1HR_MERGED_MAG_PLASMA

AccessURL
Name
COHOWeb plots and lists
URL
Description

Pioneer_Venus-specific page for plots and lists

AccessURL
Name
COHOweb top page
URL
Description

Plots, lists, scatter plots, regressions, distributions, means, etc.

Format
Text
Acknowledgement
Please acknowledge the magnetic field and plasma Principal Investigators, Drs. E. Smith and P. Gazis, and NSSDC or GSFC-SPDF
InstrumentIDs
MeasurementType
MagneticField
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1978-12-05 00:00:00
StopDate
1992-10-09 00:00:00
Note
Plasma data end on Oct. 9, 1992. Magnetic field data end on Aug. 7, 1988.
Cadence
PT1H
ObservedRegion
Heliosphere.Inner
Parameter #1
Name
Year
ParameterKey
Column1
Description

Four digit Year

Cadence
PT1H
FillValue
999.9999
Support
SupportQuantity
Temporal
Parameter #2
Name
Day
ParameterKey
Column2
Description

Decimal Day of Year

Cadence
PT1H
FillValue
999.9999
Support
SupportQuantity
Temporal
Parameter #3
Name
Hour
ParameterKey
Column3
Description

Hour

Cadence
PT1H
FillValue
999.9999
Support
SupportQuantity
Temporal
Parameter #4
Name
PVO Location relative to Venus
Description

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)

Caveats
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.
Cadence
PT1H
Units
Rv
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SSE
Structure
Size
3
Description

X,Y,Z components

Element
Name
X component
Qualifier
Component.I
Index
1
ParameterKey
Column04
Element
Name
Y component
Qualifier
Component.J
Index
2
ParameterKey
Column05
Element
Name
Z component
Qualifier
Component.K
Index
3
ParameterKey
Column06
FillValue
9999.9
Support
SupportQuantity
Positional
Parameter #5
Name
Venus radial distance
ParameterKey
Column07
Description

Heliocentric radial distance of Planet Venus in AU

Cadence
PT1H
Units
AU
Support
SupportQuantity
Positional
Parameter #6
Name
Venus latitude
ParameterKey
Column08
Description

Heliographic Inertial elevation angle of Planet Venus in deg

Cadence
PT1H
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #7
Name
Venus longitude
ParameterKey
Column09
Description

Heliographic Inertial azimuthal angle of Planet Venus in deg

Cadence
PT1H
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #8
Name
Magnetic Field Vector
Description

Hourly averages of XYZ components of fine time scale magnetic field vectors. Coordinate System is Venus Solar Orbital (VSO)

Cadence
PT1H
Units
nT
Structure
Size
3
Description

X, Y, Z components in Venus Solar Orital (VSO) coordinates

Element
Name
X component
Qualifier
Component.I
Index
1
ParameterKey
Column10
Element
Name
Y component
Qualifier
Component.J
Index
2
ParameterKey
Column11
Element
Name
Z component
Qualifier
Component.K
Index
3
ParameterKey
Column12
FillValue
999.9999
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #9
Name
Magnetic Field Vector
Description

Hourly averages of RTN components of fine time scale magnetic field vectors

Cadence
PT1H
Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
Structure
Size
3
Description

R,T,N components

Element
Name
R component
Qualifier
Component.I
Index
1
ParameterKey
Column13
Element
Name
T component
Qualifier
Component.J
Index
2
ParameterKey
Column14
Element
Name
N component
Qualifier
Component.K
Index
3
ParameterKey
Column15
FillValue
999.9999
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #10
Name
Magnetic Field Magnitude
ParameterKey
Column16
Description

Hourly average of fine time scale magnetic field magnitudes

Cadence
PT1H
Units
nT
FillValue
999.99
Field
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #11
Name
Flow speed
ParameterKey
Column17
Description

Hourly averaged solar wind plasma flow speed

Cadence
PT1H
Units
km/s
FillValue
9999.9
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
FlowSpeed
Parameter #12
Name
Flow elevation angle
ParameterKey
Column18
Description

Hourly averaged solar wind plasma flow elevation angle

Cadence
PT1H
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
RTN
FillValue
9999.9
Particle
ParticleType
Proton
Qualifier
DirectionAngle.ElevationAngle
ParticleQuantity
FlowVelocity
Parameter #13
Name
Flow azimuth angle
ParameterKey
Column19
Description

Hourly averaged solar wind plasma flow azimuthal angle

Cadence
PT1H
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
RTN
FillValue
9999.9
Particle
ParticleType
Proton
Qualifier
DirectionAngle.AzimuthAngle
ParticleQuantity
FlowVelocity
Parameter #14
Name
Density
ParameterKey
Column20
Description

Hourly averaged solar wind plasma density

Cadence
PT1H
Units
n/cc
FillValue
999.9999
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
NumberDensity
Parameter #15
Name
Temperature
ParameterKey
Column21
Description

Hourly averaged solar wind plasma temperature

Cadence
PT1H
Units
degK
FillValue
9999999.
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
Temperature