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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
COHOWeb plots and lists
COHOweb top page
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
Ulysses hourly merged magnetic field and plasma data
var authors='Balogh, Andre; McComas, David J.';
document.write(authors);
(2025).
Ulysses hourly merged magnetic field and plasma data.
[Data set].
Planetary Data System; Space Physics Data Facility; European Space Astronomy Centre.
https://doi.org/10.48322/ak7p-0510. Accessed on document.write(currentDateStr);.
Note: Proper references, including
Copy BibTeX Citation
or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.
ResourceID
spase://NASA/NumericalData/Ulysses/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.
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/Ulysses/MAGandPLS/PT1H
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Ulysses hourly merged magnetic field and plasma data
DOI
https://doi.org/10.48322/ak7p-0510
ReleaseDate
2026-07-21 12:08:34Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:58Z
Note
Added PublicationInfo. 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 13:32:21Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:30:39Z
Note
Add 'Z' to TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
RevisionEvent
ReleaseDate
2026-07-21 12:08:34Z
Note
Added HelioData InformationURL. JWL
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. A. Balogh and D. McComas, and NSSDC or GSFC-SPDF
PublicationInfo
Authors
Balogh, Andre; McComas, David J.
PublicationDate
2025-11-14 16:02:58Z
PublishedBy
Planetary Data System; Space Physics Data Facility; European Space Astronomy Centre
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Andre.Balogh
2.
PrincipalInvestigator
spase://SMWG/Person/David.J.McComas
3.
GeneralContact
spase://SMWG/Person/Natalia.E.Papitashvili
InformationURL
Name
Readme file at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/ulysses/merged/ulymgd.txt
InformationURL
Name
SWOOPS data users' guide
URL
https://spdf.gsfc.nasa.gov/pub/data/ulysses/plasma/swoops/ion/swoops_ion_users_guide_update_20030214.txt
InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/dataset/Ulysses_MAGandPLS_PT1H
Description
The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.
PriorIDs
spase://VHO/NumericalData/Ulysses/MAGandPLS/PT1H
spase://VSPO/NumericalData/Ulysses/MAGandPLS/PT1H
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
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/ulysses/merged/
Description
for annual files via ftp
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/ulysses/merged/
Description
In CDF via HTTP from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=UY_COHO1HR_MERGED_MAG_PLASMA&index=sp_phys
ProductKey
UY_COHO1HR_MERGED_MAG_PLASMA
Description
access to subset, plot, and list functionalities from CDAWeb
AccessURL
Name
COHOWeb plots and lists
URL
https://omniweb.gsfc.nasa.gov/coho/form/ulysses.html
Description
Ulysses-specific page for plots and lists
AccessURL
Name
COHOweb top page
URL
https://omniweb.gsfc.nasa.gov/coho/
Description
Plots, lists, scatter plots, regressions, distributions, means, etc.
Format
Text
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/ulysses/merged/coho1hr_magplasma/$Y
AccessFilenameTemplate
uy_coho1hr_merged_mag_plasma_$Y$m$d_$v.cdf
DataExtent
Quantity
1
Units
MB
Per
P1Y
Acknowledgement
Please acknowledge the magnetic field and plasma Principal Investigators, Drs. A. Balogh and D. McComas, and NSSDC or GSFC-SPDF
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/UY_COHO1HR_MERGED_MAG_PLASMA/clientLibraryExample/
Style
WebService
ProductKey
UY_COHO1HR_MERGED_MAG_PLASMA
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge the magnetic field and plasma Principal Investigators, Drs. A. Balogh and D. McComas, and NSSDC or GSFC-SPDF
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
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
UY_COHO1HR_MERGED_MAG_PLASMA
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Please acknowledge the magnetic field and plasma Principal Investigators, Drs. A. Balogh and D. McComas, and NSSDC or GSFC-SPDF
InstrumentIDs
spase://SMWG/Instrument/Ulysses/FGM
spase://SMWG/Instrument/Ulysses/SWOOPS
MeasurementType
MagneticField
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1990-10-25 00:00:00Z
StopDate
2008-10-18 00:00:00Z
Note
Plasma data do not start until Nov. 18, 1990. As of 12/31/2008, magnetic field data end on Feb. 29, 2008. Plasma data become quite sparse after ~May 19, 2008. Data may be extended.
Cadence
PT1H
ObservedRegion
Heliosphere.Outer
Parameter #1
Name
Magnetic Field Magnitude
ParameterKey
Column10
Description
Hourly average of fine time scale magnetic field magnitudes
Cadence
PT1H
Units
nT
FillValue
999.99
Field
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #2
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
Column07
Element
Name
T component
Qualifier
Component.J
Index
2
ParameterKey
Column08
Element
Name
N component
Qualifier
Component.K
Index
3
ParameterKey
Column09
FillValue
999.99
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #3
Name
Flow speed
ParameterKey
Column12
Description
Hourly averaged solar wind plasma flow speed
Cadence
PT1H
Units
km/s
FillValue
9999.9
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
FlowSpeed
Parameter #4
Name
Flow elevation angle
ParameterKey
Column13
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 #5
Name
Flow azimuth angle
ParameterKey
Column14
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 #6
Name
Proton density
ParameterKey
Column15
Description
Hourly averaged solar wind proton plasma density
Cadence
PT1H
Units
n/cc
FillValue
99.99999
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
NumberDensity
Parameter #7
Name
Alpha particle density
ParameterKey
Column16
Description
Hourly averaged solar wind alpha particle plasma density
Cadence
PT1H
Units
n/cc
FillValue
99.99999
Particle
ParticleType
AlphaParticle
Qualifier
Average
ParticleQuantity
NumberDensity
Parameter #8
Name
Large Temperature
ParameterKey
Column17
Description
Hourly averaged solar wind plasma temperature deteremined as the integral of the distribution in three-dimensional velocity space over all energy channels and angle bins that are statistically above noise
Cadence
PT1H
Units
degK
FillValue
9999999.
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
Temperature
Parameter #9
Name
Small Temperature
ParameterKey
Column18
Description
Hourly averaged solar wind plasma temperature estimated by summing over angle the observations at a fixed energy. The moments of the resulting one dimensional plasma spectrum are then summed and the resulting RR (radial) component of the temperature tensor is used as the estimate of proton temperature.
Cadence
PT1H
Units
degK
FillValue
9999999.
Particle
ParticleType
Proton
Qualifier
Average
ParticleQuantity
Temperature
Parameter #10
Name
Ulysses radial distance
ParameterKey
Column04
Description
Heliocentric radial distance of Ulysses in AU
Cadence
PT1H
Units
AU
Support
SupportQuantity
Positional
Parameter #11
Name
Ulysses latitude
ParameterKey
Column05
Description
Heliographic Inertial elevation angle of Ulysses in deg
Cadence
PT1H
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
SupportQuantity
Positional
Parameter #12
Name
Ulysses longitude
ParameterKey
Column06
Description
Heliographic Inertial azimuthal angle of Ulysses in deg
Cadence
PT1H
Units
deg
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HGI
Support
SupportQuantity
Positional