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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
Cluster-Rumba Prime Parameter Electron Drift Instrument (EDI) Data
var authors='Paschmann, Goetz; Pedersen, Arne; Melzner, F.; Whipple, Elden C.; McIlwain, Carl E.; Fillius, R. W.; Haerendel, Gerhard; Formisano, Vittorio; Tsuruda, Koichiro; Torbert, Roy B.; Baumjohann, Wolfgang; Amata, Ermanno; Quinn, Jack M.; Bauer, Otto; Hayakawa, Hajime; Treumann, Rudolf A.';
document.write(authors);
(2025).
Cluster-Rumba Prime Parameter Electron Drift Instrument (EDI) Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/3cp4-n849. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/Cluster-Rumba/EDI/PrimeParameter/PT4S
Description
This instrument (EDI: Electron Drift Instrument) measures the drift of a weak beam of test electrons that, when emitted in certain directions, return to the spacecraft after one gyration. This drift is related to the electric field and the gradient in the magnetic field, and these quantities can, by the use of different electron energies, be determined separately. The fundamental time step to determine the new parameters and direct the beams and the detectors is 2 ms. Inter-experiment links include: magnetic field information from FGM and STAFF, a blanking pulse received from WHISPER to warn of possible interference from that active experiment, and a similar blanking pulse sent to PEACE when the EDI electron beam could interfere with the PEACE electron measurement. For more details of the Cluster mission, the spacecraft, and its instruments, see the report Cluster: mission, payload and supporting activities, March 1993, ESA SP-1159, and the included article The Electron Drift Instrument for Cluster, by G. Paschmann et al., from which this information was obtained.
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/Cluster-Rumba/EDI/PrimeParameter/PT4S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Cluster-Rumba Prime Parameter Electron Drift Instrument (EDI) Data
AlternateName
Cluster 1 Prime Parameter EDI data
DOI
https://doi.org/10.48322/3cp4-n849
ReleaseDate
2025-12-04 13:29:02Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:01:56Z
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 13:29:02Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
This instrument (EDI: Electron Drift Instrument) measures the drift of a weak beam of test electrons that, when emitted in certain directions, return to the spacecraft after one gyration. This drift is related to the electric field and the gradient in the magnetic field, and these quantities can, by the use of different electron energies, be determined separately. The fundamental time step to determine the new parameters and direct the beams and the detectors is 2 ms. Inter-experiment links include: magnetic field information from FGM and STAFF, a blanking pulse received from WHISPER to warn of possible interference from that active experiment, and a similar blanking pulse sent to PEACE when the EDI electron beam could interfere with the PEACE electron measurement. For more details of the Cluster mission, the spacecraft, and its instruments, see the report Cluster: mission, payload and supporting activities, March 1993, ESA SP-1159, and the included article The Electron Drift Instrument for Cluster, by G. Paschmann et al., from which this information was obtained.
Acknowledgement
NASA, Dr. Goetz Paschmann, European Space Agency
PublicationInfo
Authors
Paschmann, Goetz; Pedersen, Arne; Melzner, F.; Whipple, Elden C.; McIlwain, Carl E.; Fillius, R. W.; Haerendel, Gerhard; Formisano, Vittorio; Tsuruda, Koichiro; Torbert, Roy B.; Baumjohann, Wolfgang; Amata, Ermanno; Quinn, Jack M.; Bauer, Otto; Hayakawa, Hajime; Treumann, Rudolf A.
PublicationDate
2025-11-14 16:01:56Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Goetz.Paschmann
2.
CoInvestigator
spase://SMWG/Person/Arne.Pedersen
3.
CoInvestigator
spase://SMWG/Person/F.Melzner
4.
CoInvestigator
spase://SMWG/Person/Elden.C.Whipple
5.
CoInvestigator
spase://SMWG/Person/Carl.E.McIlwain
6.
CoInvestigator
spase://SMWG/Person/R.Walker.Fillius
7.
CoInvestigator
spase://SMWG/Person/Gerhard.Haerendel
8.
CoInvestigator
spase://SMWG/Person/Vittorio.Formisano
9.
CoInvestigator
spase://SMWG/Person/Koichiro.Tsuruda
10.
CoInvestigator
spase://SMWG/Person/Roy.B.Torbert
11.
CoInvestigator
spase://SMWG/Person/Wolfgang.Baumjohann
12.
CoInvestigator
spase://SMWG/Person/Ermanno.Amata
13.
CoInvestigator
spase://SMWG/Person/Jack.M.Quinn
14.
CoInvestigator
spase://SMWG/Person/Otto.Bauer
15.
CoInvestigator
spase://SMWG/Person/Hajime.Hayakawa
16.
CoInvestigator
spase://SMWG/Person/Rudolf.A.Treumann
17.
MetadataContact
spase://SMWG/Person/James.M.Weygand
InformationURL
Name
NSSDC Master Catalog listing for the Cluster II Rumba Electron Drift Instrument (EDI)
URL
https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2000-045A-03
Description
This site provides information concerning the Cluster II Rumba Electron Drift Instrument.
Association
AssociationID
spase://SMWG/Observatory/Cluster-Rumba
AssociationType
ObservedBy
PriorIDs
spase://VMO/NumericalData/Cluster2-Rumba/EDI/PrimeParameter/4S
spase://VMO/NumericalData/Cluster-Rumba/EDI/PrimeParameter/4S
spase://VSPO/NumericalData/Cluster-Rumba/EDI/PrimeParameter/PT4S
spase://ESA/NumericalData/Cluster-Rumba/EDI/PrimeParameter/PT4S
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/cluster/c1/pp/edi/
Description
Cluster II Rumba Prime Parameter Electron Drift Instrument (EDI) data
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/cluster/c1/pp/edi/
Description
In CDF via HTTP from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=C1_PP_EDI&index=sp_phys
ProductKey
C1_PP_EDI
Format
CDF
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/cluster/c1/pp/edi/$Y
AccessFilenameTemplate
c1_pp_edi_$Y$m$d_$v.cdf
Acknowledgement
NASA, Goetz Paschmann
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/C1_PP_EDI/clientLibraryExample/
Style
WebService
ProductKey
C1_PP_EDI
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
NASA, Goetz Paschmann
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
C1_PP_EDI
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
NASA, Goetz Paschmann
ProcessingLevel
Calibrated
ProviderResourceName
Cluster II Rumba Prime Parameter Electron Drift Instrument (EDI) Data
ProviderProcessingLevel
Calibrated
ProviderVersion
1
InstrumentIDs
spase://SMWG/Instrument/Cluster-Rumba/EDI
MeasurementType
ElectricField
TemporalDescription
TimeSpan
StartDate
2000-12-09 00:00:00
RelativeStopDate
-P3M
Note
Time format in data files is: day, month, year hour, min, seconds. Ex: 01-Jan-1981 00:00:00.000
Cadence
PT4S
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Magnetotail
ObservedRegion
Earth.Magnetosphere.Main
ObservedRegion
Earth.Magnetosphere.Polar
ObservedRegion
Earth.Magnetosphere.RadiationBelt
ObservedRegion
Earth.NearSurface.AuroralRegion
ObservedRegion
Earth.NearSurface.Ionosphere
ObservedRegion
Earth.NearSurface.Plasmasphere
ObservedRegion
Earth.NearSurface.PolarCap
ObservedRegion
Heliosphere.NearEarth
Keywords
4 second
magnetosphere
auroral region
polar cap
cusp
bow shock
solar wind
magnetosheath
Cluster
magnetotail
lobe
Parameter #1
Name
Half Sample Time Interval
ParameterKey
Half_interval__C1_PP_EDI
Description
Half width of measurement interval
Cadence
PT4S
Units
ms
UnitsConversion
1.0e-3>s
FillValue
-1.0000e+31
Support
SupportQuantity
Other
Parameter #2
Name
Universal Time
ParameterKey
Epoch__C1_PP_EDI
Description
Universal Time in data cell: day, month, year hour, min, seconds. Ex: 01-Jan-1981 00:00:00.000.
Cadence
PT4S
Units
ms
UnitsConversion
1.0e-3>s
RenderingHints
AxisLabel
Epoch
FillValue
-1.0000e+31
Support
SupportQuantity
Temporal
Parameter #3
Name
Status
ParameterKey
Status__C1_PP_EDI
Description
Cluster II Rumba Prime Parameter Electron Drift Instrument status at spin time resolution
Cadence
PT4S
ValidMin
0
ValidMax
255
FillValue
255
Support
SupportQuantity
Other
Parameter #4
Name
Drift Velocity
ParameterKey
V_ed_xyz_gse__C1_PP_EDI
Description
Cluster II Rumba Prime Parameter Electron Drift Instrument drift velocity at spin time resolution
Cadence
PT4S
Units
km/s
UnitsConversion
1000.0>m s^-1
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
ScaleMin
-600
ScaleMax
600
Structure
Size
3
Element
Name
Vx GSE
Qualifier
Component.I
Index
1
Element
Name
Vy GSE
Qualifier
Component.J
Index
2
Element
Name
Vz GSE
Qualifier
Component.K
Index
3
ValidMin
-2000
ValidMax
2000
FillValue
-1.0000e+31
Particle
ParticleType
Electron
Qualifier
Vector
ParticleQuantity
Velocity
Parameter #5
Name
Electric Field
ParameterKey
E_xyz_gse__C1_PP_EDI
Description
Cluster II Rumba Prime Parameter Electron Drift Instrument electric field at spin time resolution
Cadence
PT4S
Units
mV/m
UnitsConversion
0.001>V m^-1
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
ScaleMin
-30
ScaleMax
30
Structure
Size
3
Element
Name
Ex GSE
Qualifier
Component.I
Index
1
Element
Name
Ey GSE
Qualifier
Component.J
Index
2
Element
Name
Ez GSE
Qualifier
Component.K
Index
3
ValidMin
-200
ValidMax
200
FillValue
-1.0000e+31
Field
Qualifier
Vector
FieldQuantity
Electric
Parameter #6
Name
Reduced Chi-squared Values
ParameterKey
Reduced_chi_sq__C1_PP_EDI
Description
Cluster II Rumba Prime Parameter Electron Drift Instrument reduced chi-squared values of the BESTARG fit at spin time resolution
Cadence
PT4S
RenderingHints
ScaleMin
0
ScaleMax
100
ValidMin
0
ValidMax
100
FillValue
-1.0000e+31
Support
SupportQuantity
Other