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Cluster 2 - EFW - electric field - 2D isr2

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/Cluster/Cluster2/EFW/clust2-efw-sr2

Description
Electric Field in ISR2 is obtained from CAA C[1-4]_CP_EFW_L3_E The EFW instrument measures the electric field only in the spacecraft spin plane, therefore a spin-plane oriented coordinate system is best suited for scientific studies involving the electric field. The ISR2 (Inverted Spin Reference) system, also known as DSI (Despun System Inverted), is such a system. The X and Y axes are in the spin plane, with X pointing as near sunward as possible and Y perpendicular to the sunward direction, positive towards dusk. The Z-axis is along the (negative) spacecraft spin axis, towards the north ecliptic. The coordinate system is called Inverted because the actual spin axis of Cluster is pointing towards the south ecliptic. The difference between ISR2 (DSI) and the GSE (Geocentric Solar Ecliptic) is a tilt of 2° to 7° of the Z-axis performed in order to avoid shading of the EFW probes by the spacecraft. Data quality description : * 4 : Excellent data which have received special treatment * 3 : Good for publication, subject to PI approval * 2 : Survey data, not for publication * 1 : Known problems, use at your own risk * 0 : Bad data

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NumericalData

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/Cluster/Cluster2/EFW/clust2-efw-sr2
ResourceHeader
ResourceName
Cluster 2 - EFW - electric field - 2D isr2
AlternateName
Cluster 2 2D electric field (L3)
ReleaseDate
2025-10-12 20:06:23Z
Description
Electric Field in ISR2 is obtained from CAA C[1-4]_CP_EFW_L3_E The EFW instrument measures the electric field only in the spacecraft spin plane, therefore a spin-plane oriented coordinate system is best suited for scientific studies involving the electric field. The ISR2 (Inverted Spin Reference) system, also known as DSI (Despun System Inverted), is such a system. The X and Y axes are in the spin plane, with X pointing as near sunward as possible and Y perpendicular to the sunward direction, positive towards dusk. The Z-axis is along the (negative) spacecraft spin axis, towards the north ecliptic. The coordinate system is called Inverted because the actual spin axis of Cluster is pointing towards the south ecliptic. The difference between ISR2 (DSI) and the GSE (Geocentric Solar Ecliptic) is a tilt of 2° to 7° of the Z-axis performed in order to avoid shading of the EFW probes by the spacecraft. Data quality description : * 4 : Excellent data which have received special treatment * 3 : Good for publication, subject to PI approval * 2 : Survey data, not for publication * 1 : Known problems, use at your own risk * 0 : Bad data
Acknowledgement
PrincipalInvestigator: Prof. Mats Andre
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/Mats.Andre
InformationURL
Name
ESA web page
URL
http://www.cosmos.esa.int/web/csa/documentation
Description
This site contains EFW documentation
InformationURL
Name
NSSDC Master Catalog listing for Cluster II Salsa Electric Field and Waves (EFW)
URL
http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=2000-045A-08
Description
This site provides information concerning the Cluster II Salsa Electric Field and Waves Instrument.
Association
AssociationID
c2-efw-efield
AssociationType
PartOf
Note
electric field
AccessInformation
RepositoryID
spase://SMWG/Repository/CDPP/AMDA
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA HAPI Server
URL
https://amda.irap.omp.eu/service/hapi
Style
HAPI
ProductKey
clust2-efw-sr2
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
AccessInformation
RepositoryID
spase://SMWG/Repository/CDPP/AMDA
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA Web application
URL
https://amda.cdpp.eu
Description
Access to Data via CDPP/AMDA Web application.
Format
CSV
Format
VOTable
Format
CDF
Format
PNG
Acknowledgement
Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.
ProcessingLevel
Calibrated
ProviderName
CSA
ProviderResourceName
C2_CP_EFW_L3_E
ProviderProcessingLevel
Calibrated
InstrumentIDs
spase://CNES/Instrument/CDPP-AMDA/Cluster2/EFW
MeasurementType
ElectricField
MeasurementType
Waves.Passive
TemporalDescription
TimeSpan
StartDate
2000-12-01 00:00:02Z
StopDate
2022-08-23 13:29:58Z
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
e_sr2
ParameterKey
c2_e_sr2
Description
Electric Field in ISR2 at spin time (4s) resolution (2 components)
UCD
phys.electField
Cadence
PT4S
Units
mV/m
UnitsConversion
1.0e-3>V m^-1
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
RenderingHints
DisplayType
TimeSeries
Structure
Size
2
Element
Name
ex
Index
1
ParameterKey
c2_e_sr2(0)
Element
Name
ey
Index
2
ParameterKey
c2_e_sr2(1)
FillValue
-1.e9
Field
Qualifier
Vector
FieldQuantity
Electric
Parameter #2
Name
e_quality
ParameterKey
c2_e_sr2_qual
Description
Data quality: 0 (Bad data) to 4 (Excellent data)
UCD
meta.code.qual
Cadence
PT4S
RenderingHints
DisplayType
TimeSeries
Support
SupportQuantity
Other
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Site Editor: Rita Johnson
SPDF ROR ID
SPDF re3data ID
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Last Updated: 2025-10-12