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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
Voyager 2 Plasma Spectrometer (PLS) High Resolution Plasma Density, Thermal Speed, and Velocity (RTN) Data in CDF Format
var authors='Richardson, John, D.; Gosling, John, T.';
document.write(authors);
(2023).
Voyager 2 Plasma Spectrometer (PLS) High Resolution Plasma Density, Thermal Speed, and Velocity (RTN) Data in CDF Format.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/3r7q-jg89. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/Voyager2/PLS/HIRES/CDF/PT12S
Description
Voyager 2 High-Resolution Plasma Data. The files in this directory contain the Voyager fine resolution plasma data. The plasma parameters are obtained by finding the best fit of a convected isotropic Maxwellian distribution to the data. One sigma errors are typically less than 0.5% in the speed and VR, less than 5% for the density and thermal speed, and vary greatly for VT and VN. Sampling times range from 12 to 192 sec., with sampling generally more frequent early in the mission. The velocity components are given in the RTN coordinate system, where R is radially outward, T is in a plane parallel to the solar equatorial plane and positive in the direction of solar rotation, and N completes a right-handed system. Warning: the V_t and V_n parameters are often not reliable after 1989. Please consult with us, or at least send preprints, when you use these data to prevent grievous errors or misconceptions, John Richardson, jdr@space.mit.edu.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/Voyager2/PLS/HIRES/CDF/PT12S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Voyager 2 Plasma Spectrometer (PLS) High Resolution Plasma Density, Thermal Speed, and Velocity (RTN) Data in CDF Format
DOI
https://doi.org/10.48322/3r7q-jg89
ReleaseDate
2026-06-26 13:31:29Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-30 12:34:56.789Z
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-10-03 11:24:18Z
Note
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
RevisionEvent
ReleaseDate
2025-12-04 13:32:39Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:31:29Z
Note
Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
Description
Voyager 2 High-Resolution Plasma Data. The files in this directory contain the Voyager fine resolution plasma data. The plasma parameters are obtained by finding the best fit of a convected isotropic Maxwellian distribution to the data. One sigma errors are typically less than 0.5% in the speed and VR, less than 5% for the density and thermal speed, and vary greatly for VT and VN. Sampling times range from 12 to 192 sec., with sampling generally more frequent early in the mission. The velocity components are given in the RTN coordinate system, where R is radially outward, T is in a plane parallel to the solar equatorial plane and positive in the direction of solar rotation, and N completes a right-handed system. Warning: the V_t and V_n parameters are often not reliable after 1989. Please consult with us, or at least send preprints, when you use these data to prevent grievous errors or misconceptions, John Richardson, jdr@space.mit.edu.
Acknowledgement
J.D. Richardson, J.T. Gosling
PublicationInfo
Authors
Richardson, John, D.; Gosling, John, T.
PublicationDate
2023-01-01 00:00:00Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/John.D.Richardson
2.
PrincipalInvestigator
spase://SMWG/Person/John.T.Gosling
3.
MetadataContact
spase://SMWG/Person/Robert.E.McGuire
4.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
PriorIDs
spase://VSPO/NumericalData/Voyager2/PLS/HIRES/CDF/PT12S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/voyager/voyager2/plasma_cdaweb/hires_plasma/
Description
In CDF via ftp from SPDF.
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/voyager/voyager2/plasma_cdaweb/hires_plasma/
Description
In CDF via http from SPDF.
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=VOYAGER2_PLS_HIRES_PLASMA_DATA&index=sp_phys
ProductKey
VOYAGER2_PLS_HIRES_PLASMA_DATA
Description
Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/voyager/voyager2/plasma_cdaweb/hires_plasma/$Y
AccessFilenameTemplate
voyager2_pls_hires_plasma_data_$Y$m$d_$v.cdf
Acknowledgement
J.D. Richardson, J.T. Gosling. Please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/VOYAGER2_PLS_HIRES_PLASMA_DATA/clientLibraryExample/
Style
WebService
ProductKey
VOYAGER2_PLS_HIRES_PLASMA_DATA
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
J.D. Richardson, J.T. Gosling. Please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
VOYAGER2_PLS_HIRES_PLASMA_DATA
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
J.D. Richardson, J.T. Gosling. Please acknowledge the data providers and CDAWeb when using these data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/Voyager2/PLS
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1977-08-21 03:55:17.000Z
StopDate
2007-08-30 23:33:11.000Z
Cadence
PT12S
ObservedRegion
Heliosphere.Outer
ObservedRegion
Heliosphere.Heliosheath
Parameter #1
Name
Epoch
ParameterKey
Epoch
Description
Default Time
Cadence
PT12S
Units
ms
UnitsConversion
1e-3>s
ValidMin
01-Jan-1000 00:00:00.000
ValidMax
01-Jan-3000 00:00:00.000
FillValue
31-Dec-9999 23:59:59.999
Support
SupportQuantity
Temporal
Parameter #2
Name
Proton Bulk Velocity
Set
Time series defined by using: EPOCH
ParameterKey
V
Description
Proton Bulk Velocity
Cadence
PT12S
Units
km/s
UnitsConversion
1e3>m s^-1
RenderingHints
DisplayType
TimeSeries
AxisLabel
Vp
ValueFormat
f13.2
ValidMin
0.0
ValidMax
300000.0
FillValue
-1.0e+31
Particle
ParticleType
Proton
Qualifier
Magnitude
ParticleQuantity
Velocity
Parameter #3
Name
Proton Number Density
Set
Time series defined by using: EPOCH
ParameterKey
dens
Description
Proton Number Density
Cadence
PT12S
Units
cm^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
proton density
ValueFormat
f13.2
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Proton
Qualifier
Scalar
ParticleQuantity
NumberDensity
Parameter #4
Name
Proton Thermal Velocity
Set
Time series defined by using: EPOCH
ParameterKey
V_thermal
Description
Proton Thermal Velocity
Cadence
PT12S
Units
km/s
UnitsConversion
1e3>m s^-1
RenderingHints
DisplayType
TimeSeries
AxisLabel
Vp_thermal
ValueFormat
f13.2
ValidMin
0.0
ValidMax
300000.0
FillValue
-1.0e+31
Particle
ParticleType
Proton
Qualifier
Scalar
ParticleQuantity
ThermalSpeed
Parameter #5
Name
Proton Velocity Vector in RTN Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
V_rtn
Description
Proton Velocity Vector in Radial-Tangential-Normal, RTN, Coordinates
Cadence
PT12S
Units
km/s
UnitsConversion
1e3>m s^-1
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
RTN
RenderingHints
DisplayType
TimeSeries
ValueFormat
f13.2
Structure
Size
3
Element
Name
Vr
Index
1
Element
Name
Vt
Index
2
Element
Name
Vn
Index
3
ValidMin
-300000.0
ValidMax
300000.0
FillValue
-1.0e+31
Particle
ParticleType
Proton
Qualifier
Vector
ParticleQuantity
Velocity