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FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
THEMIS L2 MOM data at UC Berkeley
THEMIS-D: On Board moments: ESA and SST Electron/Ion moments, density, flux, velocity, pressure and temperature.
var authors='Angelopoulos, Vassilis; Carlson, Charles, W.; McFadden, James, P.';
document.write(authors);
(2023).
THEMIS-D: On Board moments: ESA and SST Electron/Ion moments, density, flux, velocity, pressure and temperature..
[Data set].
Space Physics Data Facility; University of California, Berkeley.
https://doi.org/10.48322/ryqr-m277. Accessed on document.write(currentDateStr);.
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or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.
ResourceID
spase://NASA/NumericalData/THEMIS/D/MOM/PT3S
Description
THEMIS-D On Board moments. On board data outputs include number density, particle flux, energy flux, and a six component symetric momentum flux tensor. Other moments are calculated from these partial moments on the ground adding total pressure, velocity, plasma temperature (measured as a three dimensional energy vector), and a six component symetric pressure tensor to the list of data products. Number density and total pressure are scalar outputs. Velocity is calculated in DSL, GSE, GSM, and MFA coordinates (coordinate descriptions are listed below in Table 1). Magnetic Field Aligned pressure tensor and temperature are calculated as well. All quantities are calculated for both ions and electrons from a combination of ESA and SST data. Moments data are taken at spin resolution in all ESA survey modes except burst. The spacecraft potential, as measure by the EFI, is used to correct for spacecraft charging by shifting the particle energies for calculation; this eliminates contamination from photo-electrons. Also, weighting factors are used to account for instrument specific energy and angle efficiency variations. Table 1: Coordinate Descriptions. Despun Sun - L-vector (DSL): Z-axis points towards the spin axis, the Y-axis is obtained from the cross product of Z and the Spacecraft-Sun direction as viewed from the probe. The X-axis sits in the Z-axis-Sun plane and completes a right handed system. Geocentric Solar Ecliptic (GSE): Z-axis is normal to the solar ecliptic, the X-axis points from earth towards the Sun, and Y complets a right handed system. Geocentric solar Magnetosphereic (GSM): X-axis points from Earth to the Sun, the Y-axis is orthogonal to the Earth's magnetic dipole and points towards the dusk side, and the X-Z plane contains the dipole axis. Magnetic Field Aligned (MFA): Z-axis points along magnetic field lines, the Y-axis is the orthonormal cross product of the Z-axis and a vector pointing towards the Sun, and the X-axis completes the right handed system.
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/THEMIS/D/MOM/PT3S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
THEMIS-D: On Board moments: ESA and SST Electron/Ion moments, density, flux, velocity, pressure and temperature.
AlternateName
THEMIS-D MOM
DOI
https://doi.org/10.48322/ryqr-m277
ReleaseDate
2026-06-26 13:28:58Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-30 12:34:56.789Z
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-10-03 11:23:59Z
Note
Updated PublishedBy name to match ROR Registry. 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
2025-10-21 12:34:56.789Z
Note
Revised ObservedRegion. JMW
RevisionEvent
ReleaseDate
2025-12-04 13:31:45Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:28:58Z
Note
Add 'Z' to RevisionEvent:ReleaseDate(s), PublicationDate, TemporalDescription:TimeSpan:StartDate. ZCB
Description
THEMIS-D On Board moments. On board data outputs include number density, particle flux, energy flux, and a six component symetric momentum flux tensor. Other moments are calculated from these partial moments on the ground adding total pressure, velocity, plasma temperature (measured as a three dimensional energy vector), and a six component symetric pressure tensor to the list of data products. Number density and total pressure are scalar outputs. Velocity is calculated in DSL, GSE, GSM, and MFA coordinates (coordinate descriptions are listed below in Table 1). Magnetic Field Aligned pressure tensor and temperature are calculated as well. All quantities are calculated for both ions and electrons from a combination of ESA and SST data. Moments data are taken at spin resolution in all ESA survey modes except burst. The spacecraft potential, as measure by the EFI, is used to correct for spacecraft charging by shifting the particle energies for calculation; this eliminates contamination from photo-electrons. Also, weighting factors are used to account for instrument specific energy and angle efficiency variations. Table 1: Coordinate Descriptions. Despun Sun - L-vector (DSL): Z-axis points towards the spin axis, the Y-axis is obtained from the cross product of Z and the Spacecraft-Sun direction as viewed from the probe. The X-axis sits in the Z-axis-Sun plane and completes a right handed system. Geocentric Solar Ecliptic (GSE): Z-axis is normal to the solar ecliptic, the X-axis points from earth towards the Sun, and Y complets a right handed system. Geocentric solar Magnetosphereic (GSM): X-axis points from Earth to the Sun, the Y-axis is orthogonal to the Earth's magnetic dipole and points towards the dusk side, and the X-Z plane contains the dipole axis. Magnetic Field Aligned (MFA): Z-axis points along magnetic field lines, the Y-axis is the orthonormal cross product of the Z-axis and a vector pointing towards the Sun, and the X-axis completes the right handed system.
Acknowledgement
NASA Contract NAS5-02099, V. Angelopoulos for use of data from the THEMIS Mission, C.W. Carlson, and J. McFadden.
PublicationInfo
Authors
Angelopoulos, Vassilis; Carlson, Charles, W.; McFadden, James, P.
PublicationDate
2023-01-01 00:00:00Z
PublishedBy
Space Physics Data Facility; University of California, Berkeley
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Vassilis.Angelopoulos
2.
CoInvestigator
spase://SMWG/Person/Charles.W.Carlson
3.
CoInvestigator
spase://SMWG/Person/James.P.McFadden
4.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
PriorIDs
spase://VMO/NumericalData/THEMIS/D/MOM/PT3S
spase://VSPO/NumericalData/THEMIS/D/MOM/PT3S
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/themis/thd/l2/mom/
Description
NASA/GSFC CDAWeb ftp access to the data.
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/themis/thd/l2/mom/
Description
NASA/GSFC CDAWeb http access to the data.
Format
CDF
Acknowledgement
Please acknowledge the THEMIS science team and the CDAWeb team at GSFC/SPDF.
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
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=THD_L2_MOM&index=sp_phys
ProductKey
THD_L2_MOM
Description
Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb
Format
Text
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/themis/thd/l2/mom/$Y
AccessFilenameTemplate
thd_l2_mom_$Y$m$d_$v.cdf
Acknowledgement
Please acknowledge the THEMIS science team and the CDAWeb team at GSFC/SPDF.
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/THD_L2_MOM/clientLibraryExample/
Style
WebService
ProductKey
THD_L2_MOM
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge the THEMIS science team and the CDAWeb team at GSFC/SPDF.
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
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
THD_L2_MOM@0
ProductKey
THD_L2_MOM@1
ProductKey
THD_L2_MOM@2
ProductKey
THD_L2_MOM@3
ProductKey
THD_L2_MOM@4
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Please acknowledge the THEMIS science team and the CDAWeb team at GSFC/SPDF.
AccessInformation
RepositoryID
spase://SMWG/Repository/UCB/THEMIS
Availability
Online
AccessRights
Open
AccessURL
Name
THEMIS L2 MOM data at UC Berkeley
URL
http://themis.ssl.berkeley.edu/data/themis/thd/l2/mom/
Description
CDF data files for download, organized by date.
Format
CDF
Encoding
None
ProcessingLevel
Calibrated
ProviderProcessingLevel
Level 2
InstrumentIDs
spase://SMWG/Instrument/THEMIS/D/MOM
MeasurementType
ThermalPlasma
MeasurementType
EnergeticParticles
MeasurementType
IonComposition
TemporalDescription
TimeSpan
StartDate
2007-08-09 23:59:56Z
RelativeStopDate
-P7D
Cadence
PT3S
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosphere.Magnetotail
ObservedRegion
Earth.Magnetosphere.Main
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.RadiationBelt
Caveats
Due to bit errors and data misdirection, ESA data (including moments) before April 27, 2007 should be considered dubious. Other data loss and formatting errors in the moments calculations and the ETC were not corrected until Aug. 6, 2007. Potential data from the EFI was not properly included in calculations between Nov. 18-22, 2007. EFI booms on THEMIS-D were not deployed until June 7, 2007, 17:00:00 UT. Moments data before this date is suspect to error from photoelectrons and spacecraft charging.
Parameter #1
Name
Ion Moment Data Quality
ParameterKey
thd_peim_data_quality
Description
0 = good data, 1 = missing S/C potential, 2 = electron density greater than 2*ion density, 3 = ion density greater than 2*electron density
ValidMin
0
ValidMax
4
Support
SupportQuantity
Other
Parameter #2
Name
Electron Moment Data Quality
ParameterKey
thd_peem_data_quality
Description
0 = good data, 1 = missing S/C potential, 2 = electron density greater than 2*ion density, 3 = ion density greater than 2*electron density
ValidMin
0
ValidMax
4
Support
SupportQuantity
Other
Parameter #3
Name
ESA On Board Moment (MOM) Ion Density, THEMIS-D
ParameterKey
thd_peim_densityQ
Description
ESA Scalar ion number density calculated on board the spacecraft.
Units
cm^-3
UnitsConversion
1e6>m^-3
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #4
Name
Ion Total Pressure
ParameterKey
thd_peim_ptotQ
Description
Total ion pressure calculated on the ground from on board moments.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>Pa
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #5
Name
Ion Particle Flux Vector
ParameterKey
thd_peim_fluxQ
Description
ESA ion particle flux vector (in DSL coordinates) calculated on board the spacecraft.
Units
#/(cm^2*s)
UnitsConversion
1e4>#/(m^2*s)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Fx_ion MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Fy_ion MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Fz_ion MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
NumberFlux
Parameter #6
Name
Ion Momentum Flux Tensor
ParameterKey
thd_peim_mftensQ
Description
ESA ion momentum flux tensor (in DSL coordinates) calculated on board the spacecraft (six-component, off-diagonal terms are symetric).
Units
eV/cm^3
UnitsConversion
1.60217653e-13>J/(m^3)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
6
Element
Name
MFxx_ion MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFyy_ion MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFzz_ion MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFxy_ion MOM ESA-D
Index
4
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFxz_ion MOM ESA-D
Index
5
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFyz_ion MOM ESA-D
Index
6
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Moment
Qualifier
Tensor
ParticleQuantity
EnergyDensity
Parameter #7
Name
Ion Energy Flux Vector
ParameterKey
thd_peim_efluxQ
Description
ESA Ion energy flux vector (in DSL coordinates) calculated on board the spacecraft.
Units
eV/(cm^2*s)
UnitsConversion
1.60217653e-15>J/(m^2*s)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Efx_ion MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Efy_ion MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Efz_ion MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
EnergyFlux
Parameter #8
Name
Ion Velocity Vector in DSL
ParameterKey
thd_peim_velocity_dslQ
Description
ESA Ion velocity vector (in DSL coordinates, see chart in data description) calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Vx_ion DSL MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_ion DSL MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_ion DSL MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #9
Name
Ion Velocity Vector in GSE
ParameterKey
thd_peim_velocity_gseQ
Description
ESA Ion velocity vector (in GSE coordinates, see chart in data description) calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Vx_ion GSE MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_ion GSE MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_io n GSE MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #10
Name
Ion Velocity Vector in GSM
ParameterKey
thd_peim_velocity_gsmQ
Description
ESA Ion velocity vector (in GSM coordinates, see chart in data description) calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Vx_ion GSM MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_ion GSM MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_ion GSM MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #11
Name
Ion Pressure Tensor
ParameterKey
thd_peim_ptensQ
Description
ESA Ion pressure tensor (in DSL coordinates, see chart in data description) calculated on the ground from spacecraft moments.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
6
Element
Name
Pxx_ion MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyy_ion MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pzz_ion MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxy_ion MOM ESA-D
Index
4
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxz_ion MOM ESA-D
Index
5
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyz_ion MOM ESA-D
Index
6
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #12
Name
Magnetic Field Vector DSL (Same time array as MOM Ion ESA data)
ParameterKey
thd_peim_magQ
Description
Magnetic field vector in DSL coordinates (same time array as MOM Ion ESA data); for calculated of field aligned moments.
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Bx_ion DSL MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
By_ion DSL MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Bz_ion DSL MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #13
Name
Ion Velocity Vector, Field Aligned
ParameterKey
thd_peim_velocity_magQ
Description
ESA Ion velocity vector in magnetic field aligned coordinates; calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
MFA
Structure
Size
3
Element
Name
Vx_ion FA MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_ion FA MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_ion FA MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #14
Name
Ion Temperature, Field Aligned (TprpFA1, TprpFA2, TparFA)
ParameterKey
thd_peim_t3_magQ
Description
Ion Temperature, Field Aligned (TprpFA1, TprpFA2, TparFA)
Caveats
ESA Three dimentional temperature in magnetic field aligned coordinates (see chart in data description).
Units
eV
UnitsConversion
1.60217653e-19>J
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
MFA
Structure
Size
3
Element
Name
Tx_ion FA MOM ESA-D
Index
1
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Element
Name
Ty_ion FA MOM ESA-D
Index
2
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Element
Name
Tz_ion FA MOM ESA-D
Index
3
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Energy
Parameter #15
Name
Ion Pressure Tensor, Field Aligned
ParameterKey
thd_peim_ptens_magQ
Description
Ion Pressure Tensor, Field Aligned
Caveats
ESA Symmetric pressure tensor about magnetic field aligned coordinates (see chart in data description); calculated on the ground from spacecraft moments.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
MFA
Structure
Size
6
Element
Name
Pxx_ion FA MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyy_ion FA MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pzz_ion FA MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxy_ion FA MOM ESA-D
Index
4
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxz_ion FA MOM ESA-D
Index
5
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyz_ion FA MOM ESA-D
Index
6
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #16
Name
thd_peim_time
ParameterKey
thd_peim_time
Description
thd_peim_time, UTC, in seconds since 01-Jan-1970 00:00:00; marks center time of data sample.
Caveats
Not including leap seconds.
Units
s
ValidMin
0.0
ValidMax
5.0E9
FillValue
NaN
Support
SupportQuantity
Temporal
Parameter #17
Name
ESA On Board Moment (MOM) Electron Density, THEMIS-D
ParameterKey
thd_peem_densityQ
Description
ESA electron density calculated on board the spacecraft.
Units
cm^-3
UnitsConversion
1e6>m^-3
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Scalar
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #18
Name
Electron Total Pressure
ParameterKey
thd_peem_ptotQ
Description
ESA Electron total pressure calculated on the ground from spacecraft moments.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>Pa
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Scalar
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #19
Name
Electron Particle Flux Vector
ParameterKey
thd_peem_fluxQ
Description
ESA Electron particle flux vector (in DSL coordinates) calculated on board the spacecraft.
Units
#/(cm^2*s)
UnitsConversion
1e4>#/(m^2*s)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Fx_elec MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Fy_elec MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Fz_elec MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
NumberFlux
Parameter #20
Name
Electron Momentum Flux Tensor
ParameterKey
thd_peem_mftensQ
Description
ESA Electron momentum flux tensor (in DSL coordinates) calculated on board the spacecraft.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>J/(m^3)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
6
Element
Name
MFxx_elec MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFyy_elec MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFzz_elec MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFxy_elec MOM ESA-D
Index
4
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFxz_elec MOM ESA-D
Index
5
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
MFyz_elec MOM ESA-D
Index
6
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #21
Name
Electron Energy Flux Vector
ParameterKey
thd_peem_efluxQ
Description
ESA Electron energy flux vector (in DSL coordinates) calculated on board the spacecraft.
Units
eV/(cm^2*s)
UnitsConversion
1.60217653e-15>J/(m^2*s)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Efx_elec MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Efy_elec MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Efz_elec MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
EnergyFlux
Parameter #22
Name
Electron Velocity Vector in DSL
ParameterKey
thd_peem_velocity_dslQ
Description
ESA Electron velocity vectors (in DSL coordinates) calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Vx_elec DSL MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_elec DSL MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_elec DSL MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #23
Name
Electron Velocity Vector in GSE
ParameterKey
thd_peem_velocity_gseQ
Description
ESA Electron velocity vector (in GSE coordinates) calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Vx_elec GSE MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_elec GSE MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_elec GSE MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #24
Name
Electron Velocity Vector in GSM
ParameterKey
thd_peem_velocity_gsmQ
Description
ESA Electron velocity vector (in GSM coordinates) calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Vx_elec GSM MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_elec GSM MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_elec GSM MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #25
Name
Electron Pressure Tensor
ParameterKey
thd_peem_ptensQ
Description
ESA Electron pressure tensor (in DSL coordinates) calculated on the ground from spacecraft moments.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
6
Element
Name
Pxx_elec MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyy_elec MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pzz_elec MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxy_elec MOM ESA-D
Index
4
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxz_elec MOM ESA-D
Index
5
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyz_elec MOM ESA-D
Index
6
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #26
Name
Magnetic Field Vector DSL (Same time array as MOM Electron ESA data)
ParameterKey
thd_peem_magQ
Description
Magnetic Field Vector in DSL coordinates (same time array as MOM Electron ESA data); for calculation of field-aligned moments.
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Bx_elec DSL MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
By_elec DSL MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Bz_elec DSL MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #27
Name
Electron Velocity Vector, Field Aligned
ParameterKey
thd_peem_velocity_magQ
Description
ESA Electron velocity vector in magnetic field aligned coordinates; calculated on the ground from spacecraft moments.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
MFA
Structure
Size
3
Element
Name
Vx_elec FA MOM ESA-D
Index
1
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vy_elec FA MOM ESA-D
Index
2
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Element
Name
Vz_elec FA MOM ESA-D
Index
3
ValidMin
-10000.0
ValidMax
10000.0
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Velocity
Parameter #28
Name
Electron Temperature, Field Aligned (TprpFA1, TprpFA2, TparFA)
ParameterKey
thd_peem_t3_magQ
Description
Three dimentional electron temperature in magnetic field aligned coordinates; calculated on the ground from spacecraft moments. (TprpFA1, TprpFA2, TparFA)
Caveats
3d temperatures around magnetic axis (Z) and normal axes (X,Y), where Y is Z direction crosed into Sun direction, and X completes orthogonal system.
Units
eV
UnitsConversion
1.60217653e-19>J
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
MFA
Structure
Size
3
Element
Name
Tx_elec FA MOM ESA-D
Index
1
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Element
Name
Ty_elec FA MOM ESA-D
Index
2
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Element
Name
Tz_elec FA MOM ESA-D
Index
3
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
Energy
Parameter #29
Name
Electron Pressure Tensor, Field Aligned
ParameterKey
thd_peem_ptens_magQ
Description
ESA Electron pressure tensor in magnetic field aligned coordinates; calculated on the ground from spacecraft moments.
Caveats
Pressure tensor around magnetic axis (Z) and normal axes (X,Y), where Y is Z direction crosed into Sun direction, and X completes orthogonal system.
Units
eV/cm^3
UnitsConversion
1.60217653e-13>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
MFA
Structure
Size
6
Element
Name
Pxx_elec FA MOM ESA-D
Index
1
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyy_elec FA MOM ESA-D
Index
2
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pzz_elec FA MOM ESA-D
Index
3
ValidMin
-1.0E10
ValidMax
1.0E 10
FillValue
NaN
Element
Name
Pxy_elec FA MOM ESA-D
Index
4
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pxz_elec FA MOM ESA-D
Index
5
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Element
Name
Pyz_elec FA MOM ESA-D
Index
6
ValidMin
-1.0E10
ValidMax
1.0E10
FillValue
NaN
Particle
ParticleType
Electron
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
EnergyDensity
Parameter #30
Name
thd_peem_time
ParameterKey
thd_peem_time
Description
thd_peem_time, UTC, in seconds since 01-Jan-1970 00:00:00; marks center time of data sample.
Caveats
Not including leap seconds.
Units
s
ValidMin
0.0
ValidMax
5.0E9
FillValue
NaN
Support
SupportQuantity
Temporal
Parameter #31
Name
Spacecraft Potential, THEMIS-D
ParameterKey
thd_pxxm_pot
Description
Spacecraft potential as measured by the EFI.
Units
V
ValidMin
0.0
ValidMax
1.0E10
FillValue
NaN
Support
SupportQuantity
Other
Parameter #32
Name
thd_pxxm_time
ParameterKey
thd_pxxm_time
Description
thd_pxxm_time, UTC, in seconds since 01-Jan-1970 00:00:00; marks center time of data sample.
Caveats
Not including leap seconds.
Units
s
ValidMin
0.0
ValidMax
5.0E9
FillValue
NaN
Support
SupportQuantity
Temporal