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Wind 3DP EESA-LOW Electron Pitch-Angle Distributions

ResourceID
spase://NASA/NumericalData/Wind/3DP/ELPD/PT96S

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.

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/Wind/3DP/ELPD/PT96S
ResourceHeader
ResourceName
Wind 3DP EESA-LOW Electron Pitch-Angle Distributions
ReleaseDate
2020-07-07 21:16:04Z
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.
Contacts
RolePerson
1.DataProducerspase://SMWG/Person/Peter.Schroeder
2.PrincipalInvestigatorspase://SMWG/Person/Robert.P.Lin
InformationURL
Name
Wind 3DP instrument home page
URL
http://sprg.ssl.berkeley.edu/wind3dp/
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
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/wind/3dp/3dp_elpd/
Description

in CDF via ftp from CDAWeb

AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/wind/3dp/3dp_elpd/
Description

In CDF via HTTP from CDAWeb

Format
CDF
Encoding
None
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=WI_ELPD_3DP&index=sp_phys
ProductKey
WI_ELPD_3DP
Description

Subsets, plots, lists from CDAWeb

Format
Text
Encoding
None
AccessInformation
RepositoryID
spase://SMWG/Repository/UCB/Wind/3DP
Availability
Online
AccessRights
Open
AccessURL
Name
WIND 3DP ELPD data at UCB
URL
http://sprg.ssl.berkeley.edu/wind3dp/data/wi/3dp/elpd/
Description

in CDF via ftp from CDAWeb

Format
CDF
Encoding
None
ProviderResourceName
Wind 3DP ELPD Data
ProviderProcessingLevel
1
ProviderVersion
2
InstrumentIDs
spase://SMWG/Instrument/Wind/3DP
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
SupportQuantity
Temporal
Parameter #2
Name
Unix Time
ParameterKey
TIME
Description

Time since 1970-01-01T00:00:00Z in seconds

Units
s
Support
SupportQuantity
Temporal
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
Size
15 8
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
Name
Bx
Index
1
Element
Name
By
Index
2
Element
Name
Bz
Index
3
Field
Qualifier
Average
Qualifier
Vector
FieldQuantity
Magnetic