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Polar Electric Fields Instrument (EFI), non-positional, non-velocity ephemeris data

(2025). Polar Electric Fields Instrument (EFI), non-positional, non-velocity ephemeris data [Data set]. University of California, Berkeley.

ResourceID
spase://NASA/NumericalData/POLAR/EFI/SC/OtherOrbit/PT60S

Description

The Polar non-positional, non-velocity ephemeris data

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Details

Version:2.7.1

MetadataRightsList

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 SPASE metadata descriptions

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/POLAR/EFI/SC/OtherOrbit/PT60S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Polar Electric Fields Instrument (EFI), non-positional, non-velocity ephemeris data
ReleaseDate
2025-12-04 13:31:00Z
RevisionHistory
RevisionEvent
ReleaseDate
2020-07-07 21:15:01Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-08-05 13:12:20Z
Note
Added ObservedRegion(s). 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 value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-11-14 16:03:07Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:31:00Z
Note
Added MetadataRightsList. Updated to 2.7.1. ZCB
Description

The Polar non-positional, non-velocity ephemeris data

Acknowledgement
The user will acknowledge, in any publication which uses POLAR EFI data, the instrument PI.
PublicationInfo
Authors
Mozer, Forrest S.
PublicationDate
2025-11-14 16:03:07Z
PublishedBy
University of California, Berkeley
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Forrest.S.Mozer
2.MetadataContactspase://SMWG/Person/Jack.B.Vernetti
PriorIDs
spase://VWO/NumericalData/POLAR/EFI/S_C_OtherOrbit
spase://VSPO/NumericalData/POLAR/EFI/SC/OtherOrbit/PT60S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
URL
Description

This URL is the root location of the POLAR EFI archive. It consists of Yearly subdirectories: 1996, 1997, ..., 2008 each of which consists of Monthly subdirectories: 01, 02, ..., 12 The archive files for a given date are located in the corresponding YY/MM subdirectory.

Language
en
Format
CDF
Encoding
None
Acknowledgement
The user will acknowledge, in any publication which uses POLAR EFI data, the instrument PI.
InstrumentIDs
MeasurementType
Ephemeris
TemporalDescription
TimeSpan
StartDate
1996-03-16 00:00:00
StopDate
2008-04-13 24:00:00
Cadence
PT60S
ObservedRegion
Earth.Magnetosphere.Polar
ObservedRegion
Earth.NearSurface.AuroralRegion
ObservedRegion
Earth.Magnetosphere
Parameter #1
Name
Time
ParameterKey
TIME_TAG
Description

Data point time-tags which are double precision floating point numbers which represent the number of seconds, UTC, from midnight of the day represented by the file.

Cadence
PT60S
Units
seconds
ValidMin
0.0
ValidMax
86460.0
Support
SupportQuantity
Temporal
Parameter #2
Name
SC_GeocentricDistance
ParameterKey
DATA_VALUES
Description

Data point values which are single precision floating point numbers which represent the Geocentric Distance of the spacecraft, in Re.

Cadence
PT60S
Units
Re
UnitsConversion
6.3712e+6>m
ValidMin
-20.0
ValidMax
20.0
Support
SupportQuantity
Other
Parameter #3
Name
SC_MagneticLocalTime
ParameterKey
DATA_VALUES
Description

Data point values which are single precision floating point numbers which represent the Magnetic Local Time of the spacecraft, in Hours.

Cadence
PT60S
Units
Hours
ValidMin
0.0
ValidMax
24.0
Support
SupportQuantity
Other
Parameter #4
Name
SC_Lshell
ParameterKey
DATA_VALUES
Description

Data point values which are single precision floating point numbers which represent the Lshell location of the spacecraft, in Re.

Cadence
PT60S
Units
Re
UnitsConversion
6.3712e+6>m
ValidMin
0.0
ValidMax
100000.0
Support
SupportQuantity
Other
Parameter #5
Name
SC_GeographicLatitude
ParameterKey
DATA_VALUES
Description

Data point values which are single precision floating point numbers which represent the geographic latitude of the spacecraft, in degrees.

Cadence
PT60S
Units
Degrees
ValidMin
-180.0
ValidMax
180.0
Support
SupportQuantity
Other
Parameter #6
Name
SC_GeographicLongitude
ParameterKey
DATA_VALUES
Description

Data point values which are single precision floating point numbers which represent the geographic longitude of the spacecraft, in degrees.

Cadence
PT60S
Units
Degrees
ValidMin
-180.0
ValidMax
180.0
Support
SupportQuantity
Other
Parameter #7
Name
SC_InvariantLatitude
ParameterKey
DATA_VALUES
Description

Data point values which are single precision floating point numbers which represent the invariant latitude of the spacecraft, in degrees.

Cadence
PT60S
Units
Degrees
ValidMin
-180.0
ValidMax
180.0
Support
SupportQuantity
Other