Version:2.3.2
NumericalData
ResourceID
spase://NASA/NumericalData/Wind/3DP/ELPD/PT96S
ResourceHeader
ResourceName
Wind 3DP EESA-LOW Electron Pitch-Angle Distributions
DOI
https://doi.org/10.48322/kesf-re26
ReleaseDate
2021-05-31 12:34:56.789
RevisionHistory
RevisionEvent
ReleaseDate
2021-05-31 12:34:56.789
Note
Updated to SPASE Version 2.3.2 if needed, Applied quality control for DOI usage, LFB
Description
Wind 3DP electron pitch angle product providing electron fluxes in 8 directional bins relative to the local magnetic field direction at 15 different energy levels. Time resolution is mode- dependent, with 96s being used for the past several years and with higher resolution (e.g., 24s) used for some earlier intervals. For any given cadence, electron observations made over the full cadence interval and in all look directions in and out of the spacecraft spin plane, are folded together with the magnetic field vector as averaged over the cadence interval, to produce the pitch angle distributions. The data are calibrated science quality data.
Acknowledgement
User will acknowledge the Wind 3DP Team in any publication resulting from use of this data.
PublicationInfo
Authors
Lin, Robert P.; Bale, Stuart D.; Wilson III, Lynn B.; & Schroeder, Peter
PublicationDate
2021-01-01 00:00:00
PublishedBy
NASA Space Physics Data Facility and the Space Sciences Laboratory, University of California, Berkeley
Contacts
InformationURL
Name
Wind 3DP instrument home page
URL
Description
The Wind 3DP instrument home page contains information on the Wind 3DP instruments and their associated data sets.
PriorIDs
spase://VHO/NumericalData/Wind/3DP/ELPD.PT96S
spase://VSPO/NumericalData/Wind/3DP/ELPD/PT96S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description
in CDF via ftp from CDAWeb
AccessURL
Name
HTTPS from SPDF
URL
Description
In CDF via HTTP from CDAWeb
Format
CDF
Encoding
None
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
ProductKey
WI_ELPD_3DP
Description
Subsets, plots, lists from CDAWeb
Format
Text
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/wind/3dp/3dp_elpd/$Y
AccessFilenameTemplate
wi_elpd_3dp_$Y$m$d_$v.cdf
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
Style
WebService
ProductKey
WI_ELPD_3DP
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
WI_ELPD_3DP
Description
Web Service to this product using the HAPI interface.
Format
CSV
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
WIND 3DP ELPD data at UCB
URL
Description
in CDF via ftp from CDAWeb
Format
CDF
Encoding
None
ProviderResourceName
Wind 3DP ELPD Data
ProviderProcessingLevel
1
ProviderVersion
2
InstrumentIDs
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1994-11-15 12:53:43Z
RelativeStopDate
-P02D
Cadence
PT96S
ObservedRegion
Heliosphere.NearEarth
Caveats
There are several variables in the data files which are not populated in the publicly available data product. These variables include EDENS, TEMP, QP, QM, QT, REDF, and VSW.
Parameter #1
Name
Epoch
ParameterKey
Epoch
Description
Number of milliseconds since CDF_EPOCH: 0000-01-01T00:00:00.000.
Units
ms
UnitsConversion
1e-3>s
Support
Parameter #2
Name
Unix Time
ParameterKey
TIME
Description
Time since 1970-01-01T00:00:00Z in seconds
Units
s
Support
Parameter #3
Name
Electron Flux
ParameterKey
FLUX
Description
Electron flux is a 15 by 8 dimensional array. The first dimension corresponds to 15 time dependent energy bands (parameter ENERGY, centered from ~5 eV to ~1150 eV). The 2nd dimension corresponds to 8 time dependent pitch angles (parameter PANGLE, ranging from ~15 deg to ~165 deg) relative to the magnetic field direction as averaged over the 96 sec (or other mode-dependent cadence) interval. Pitch angle distributions are calculated using all EESA look directions (ie., the whole cone), not just those in the spin plane.
Units
#/(cm^2*ster*eV*s)
Structure
Particle
ParticleType
Electron
ParticleQuantity
NumberFlux
EnergyRange
Low
3
High
30000
Units
eV
AzimuthalAngleRange
Low
0
High
360
Units
degrees
PolarAngleRange
Low
-45
High
45
Units
degrees
Parameter #4
Name
Electron Energy
ParameterKey
ENERGY
Description
Average electron energy
Units
eV
Structure
Size
15
Description
The 15 average electron energies for this pitch angle distribution
Particle
ParticleType
Electron
Qualifier
Average
ParticleQuantity
Energy
EnergyRange
Low
3
High
30000
Units
eV
Parameter #5
Name
Electron Pitch Angle
ParameterKey
PANGLE
Description
Average electron pitch angle with respect to the magnetic field vector
Units
degree
Structure
Size
8
Description
The 8 average pitch angles for this pitch angle distribution
Particle
ParticleType
Electron
Qualifier
DirectionAngle
ParticleQuantity
ArrivalDirection
EnergyRange
Low
3
High
30000
Units
eV
Parameter #6
Name
Magnetic field vector in GSE coordinates
ParameterKey
MAGF
Description
Magnetic field vector in GSE coordinates, as averaged over higher resolutuion measurements during the 96s interval (or other instrument-mode-dependent interval)
Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Element
Element
Field
Qualifier
Average
Qualifier
Vector
FieldQuantity
Magnetic
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