SPASE Resource Description

spase://CNES/NumericalData/CDPP-Archive/MMS-2/FPI/DES/MMS_FPI_2_L2_FAST_DES_MOM

ResourceName

MMS-2 FPI DES Level-2 Fast electron moments (CDF)

DOI

https://doi.org/10.24400/802406/rhkj-nqpq

ReleaseDate

2022-07-07 14:05:24Z

Description

This dataset provides the moments of the electron distribution at the FAST cadence (4.5 s) computed from the full distribution function and corrected from a number of effects (including the spacecraft electrostatic potential). The dataset comprises the main moments: density, velocity vector, temperatures (and associated pressure tensor), and heat flux. They are provided in GSE frame. For more information on the FPI instruments, data set, and user guide, please see: MMS Science Data Center (https://lasp.colorado.edu/mms/sdc/public/datasets/fpi/) MMS FPI Data Users and Products Guide (https://lasp.colorado.edu/galaxy/display/MFDPG/MMS+FPI+Data+Users+and+Products+Guide) FPI Release Notes (https://lasp.colorado.edu/mms/sdc/public/datasets/fpi/mms-FPIReleaseNotes-220217.pdf)

Acknowledgement

FPI data, as a data set of the MMS-SMART data products, are open to all scientists and the public (Users). Users should contact the MMS-SMART Principal Investigator (PI) J. L. Burch and B. Giles the FPI Lead to consult on the appropriate use of instrument data. Users should acknowledge the sources of data used in all publications, presentations, and reports. Please send information on the use of these data to: PI: J. L. Burch [jburch@swri.edu] FPI Lead: B. Giles [barbara.giles@gsfc.nasa.gov] We suggest to add the following lines into the acknowledgments: The authors acknowledge NASA, CNES (Centre National d'Etudes Spatiales) and CNRS (Centre National de la Recherche Scientifique) for their support to the MMS/FPI team and the CDPP (Centre de Données de la Physique des Plasmas) for the distribution of the MMS/SCM data. and if PI/coI are not part of the publication list, then we suggest to add Specifically, we acknowledge J. L. Burch for use of data from the MMS-SMART mission, B. Giles for use of FPI data. For more informations about data rights and rules, see MMS Science Data center The following paper should also be used to reference: Pollock, C., T. Moore, A. Jacques, J. Burch, U. Gliese, Y. Saito, T. Omoto, L. Avanov, A. Barrie, V. Coffey, J. Dorelli, D. Gershman, B. Giles, T. Rosnack, C. Salo, S. Yokota, M. Adrian, C. Aoustin, C. Auletti, S. Aung, V. Bigio, N. Cao, M. Chandler, D. Chornay, K. Christian, G. Clark, G. Collinson, T. Corris, A. De Los Santos, R. Devlin, T. Diaz, T. Dickerson, C. Dickson, A. Diekmann, F. Diggs, C. Duncan, A. Figueroa-Vinas, C. Firman, M. Freeman, N. Galassi, K. Garcia, G. Goodhart, D. Guererro, J. Hageman, J. Hanley, E. Hemminger, M. Holland, M. Hutchins, T. James, W. Jones, S. Kreisler, J. Kujawski, V. Lavu, J. Lobell, E. LeCompte, A. Lukemire, E. MacDonald, A. Mariano, T. Mukai, K. Narayanan, Q. Nguyan, M. Onizuka, W. Paterson, S. Persyn, B. Piepgrass, F. Cheney, A. Rager, T. Raghuram, A. Ramil, L. Reichenthal, H. Rodriguez, J. Rouzaud, A. Rucker, Y. Saito, M. Samara, J.-A. Sauvaud, D. Schuster, M. Shappirio, K. Shelton, D. Sher, D. Smith, K. Smith, S. Smith, D. Steinfeld, R. Szymkiewicz, K. Tanimoto, J. Taylor, C. Tucker, K. Tull, A. Uhl, J. Vloet, P. Walpole, S. Weidner, D. White, G. Winkert, P.-S. Yeh, M. Zeuch (2016), Fast Plasma Investigation for Magnetospheric Multiscale, Space Sci. Rev., DOI: 10.1007/s11214-016-0245-4.

Contacts

	Role	Person
1.	PrincipalInvestigator	spase://CNES/Person/CDPP-Archive/James.L.Burch
2.	PrincipalInvestigator	spase://CNES/Person/CDPP-Archive/Barbara.Giles
3.	CoInvestigator	spase://CNES/Person/CDPP-Archive/Vincent.Genot
4.	CoInvestigator	spase://CNES/Person/CDPP-Archive/Jean-Andre.Sauvaud
5.	CoInvestigator	spase://CNES/Person/CDPP-Archive/Benoit.Lavraud

RepositoryID

spase://CNES/Repository/CDPP-Archive/REGARDS-CDPP

Availability

Online

AccessURL

Name

REGARDS

URL

https://regards.cnes.fr/user/cdpp/modules/1777?sp=DatasetName;q=DatasetName:MMS_FPI_2_L2_FAST_DES_MOM

Description

Access via CNES Data Archive for CDPP

Format

CDF

spase://CNES/Instrument/CDPP-Archive/MMS-2/FPI/DES

EnergeticParticles

Spectrum

ThermalPlasma

TimeSpan

StartDate

2015-06-22 00:00:00Z

StopDate

2021-09-30 00:00:00Z

Earth.Magnetosheath

Earth.Magnetosphere

Earth.Magnetosphere.Magnetotail

Earth.Magnetosphere.Main

Earth.Magnetosphere.RadiationBelt

Earth.NearSurface.EquatorialRegion

Earth.NearSurface.Plasmasphere

Heliosphere.NearEarth

Name

Data Quality Error Flags

Description

MMS2 FPI/DES dataQuality errorFlags

Caveats

A Value of Zero signifies no Quality Errors. For Non-Zero Values: Bit-0=Manually flagged Interval, Bit-1=Overcounting/Saturation Effects likely present in Sky Map, Bit-2=Reported Spacecraft Potential above 20 V, Bit-3=Invalid/Unavailable Spacecraft Potential, Bit-4=Significant (>10%) Cold Plasma (<10 eV) Component, Bit-5=Significant (>25%) Hot Plasma (>30 keV) Component, Bit-6=High Sonic Mach Number (V/Vth > 2.5), Bit-7=Low calculated Density (N_DES < 0.05 cm^-3), Bit-8=Bent Pipe Magnetic Field used instead of Survey l2pre Magnetic Field, Bit-10=No internally generated Photoelectron Correction applied, Bit-11=Compression Pipeline Error, Bit-12=Spintone Calculation Error (DBCS only)

Support

SupportQuantity

Other

Name

Compression Flag

Description

MMS2 FPI/DES Compression Lossless/Lossy Indicator Flag at Survey Start Time

Caveats

Compression Loss Indicator, 0=Lossless, 1=Lossy

Support

SupportQuantity

Other

Name

Start Del-Phi Count

Description

MMS2 FPI/DES Del-Phi (obs spin-phase) count at survey-start time

Caveats

Nominally, the Spin Phase Counts range over [0000,5759] Counts. Each Count represents 1/16 of a Degree (0.0625°) of Observatory Spin Phase. Zero Spin Phase Angle indicates that the Observatory +X-axis is aligned with the Sun Sensor Axis.

Support

SupportQuantity

Other

Name

Start Del-Phi Angle

Description

MMS2 FPI/DES Del-Phi (obs spin-phase) angle at survey-start time

Caveats

Nominally, the Spin Phase Angles range over [0°,360°). Each Count represents 1/16 of a Degree (0.0625°) of Observatory Spin Phase. Zero Spin Phase Angle indicates that the Observatory +X-axis is aligned with the Sun Sensor Axis.

Units

°

UnitsConversion

0.0174532925>rad

Support

Qualifier

DirectionAngle.AzimuthAngle

Qualifier

PhaseAngle

SupportQuantity

Positional

Name

Electron Pitch Angle Distribution, Low Energies

Description

MMS2 FPI/DES electron pitch-angle distribution for low energies during this survey

Caveats

Low Energy Bin: Energy Steps 00-10 (of Total Steps 00-31). Pitch Angle Bin Size: 6°. Note that the Pitch Angles are calculated in the Spacecraft Frame. Thus, these Angles are not shifted by the Bulk Velocity.

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Magnitude

ParticleQuantity

NumberFlux

Name

Electron Pitch Angle Distribution, Mid Energies

Description

MMS2 FPI/DES electron pitch-angle distribution for mid energies during this survey

Caveats

Mid Energy Bin: Energy Steps 11-20 (of Total Steps 00-31). Pitch Angle Bin Size: 6°. Note that the Pitch Angles are calculated in the Spacecraft Frame. Thus, these Angles are not shifted by the Bulk Velocity.

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Magnitude

ParticleQuantity

NumberFlux

Name

Electron Pitch Angle Distribution, High Energies

Description

MMS2 FPI/DES electron pitch-angle distribution for high energies during this survey

Caveats

High Energy Bin: Energy Steps 21-31 (of Total Steps 00-31). Pitch Angle Bin Size: 6°. Note that the Pitch Angles are calculated in the Spacecraft Frame. Thus, these Angles are not shifted by the Bulk Velocity.

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Magnitude

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, DBCS +X Direction

Description

MMS2 FPI/DES electron energy spectrum near +X_DBCS during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction is within 45° (Polar and Azimuthal) of the +X Axis (Instrument Look Angles: 45° ≤ Theta < 135° and 135° ≤ Phi < 225°).

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Component.I

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, DBCS -X Direction

Description

MMS2 FPI/DES electron energy spectrum near X_DBCS during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction is within 45° (Polar and Azimuthal) of the -X Axis (Instrument Look Angles: 45° ≤ Theta < 135° and Phi ≥ 315° or Phi < 45°).

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Component.I

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, DBCS +Y Direction

Description

MMS2 FPI/DES electron energy spectrum near +Y_DBCS during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction is within 45° (Polar and Azimuthal) of the +Y Axis (Instrument Look Angles: 45° ≤ Theta < 135° and 225° ≤ Phi < 315°). </Caveats>

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Component.J

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, DBCS -Y Direction

Description

MMS2 FPI/DES electron energy spectrum near Y_DBCS during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction is within 45° (Polar and Azimuthal) of the -Y Axis (Instrument Look Angles: 45° ≤ Theta < 135° and 45° ≤ Phi < 135°).

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Component.J

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, DBCS +Z Direction

Description

MMS2 FPI/DES electron energy spectrum near +Z_DBCS during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction is within 45° (Polar and Azimuthal) of the +Z Axis (Instrument Look Angles: 135° ≤ Theta < 180° and 0° ≤ Phi < 360°).

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Component.K

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, DBCS -Z Direction

Description

MMS2 FPI/DES electron energy spectrum near Z_DBCS during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction is within 45° (Polar and Azimuthal) of the -Z Axis (Instrument Look Angles: 0° ≤ Theta < 45° and 0° ≤ Phi < 360°).

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Component.K

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, B Parallel Direction

Description

MMS2 FPI/DES electron energy parallel to the magnetic field direction during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction (not Instrument Look Direction) is within 30° of the Magnetic Field Direction.

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Array

Qualifier

Parallel

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, B Anti-Parallel Direction

Description

MMS2 FPI/DES electron energy anti-parallel to the magnetic field direction during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction (not Instrument Look Direction) is within 150° of the Magnetic Field Direction.

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Array

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, B Perpendicular Direction

Description

MMS2 FPI/DES electron energy perpendicular to the magnetic field direction during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over Particles whose DBCS Flow Direction (not Instrument Look Direction) is within 60° to 120° of the Magnetic Field Direction.

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Array

ParticleQuantity

NumberFlux

Name

Electron Energy Spectrum, Omni-Directional

Description

MMS2 FPI/DES omni-directional electron energy spectrum during this survey

Caveats

Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over all Directions (Flow or Look).

Units

keV/(cm^2 s sr keV)

UnitsConversion

1.0e4>J/(m^2 s sr J)

Particle

ParticleType

Electron

Qualifier

Array

ParticleQuantity

NumberFlux

Name

Electron Number Density

Description

MMS2 FPI/DES electron number density during this survey

Units

cm^-3

UnitsConversion

1.0e6>m^-3

Particle

ParticleType

Electron

Qualifier

Magnitude

Qualifier

Moment

ParticleQuantity

NumberDensity

Name

Electron Number Density, Error

Description

MMS2 FPI/DES electron number density error during this survey

Units

cm^-3

UnitsConversion

1.0e6>m^-3

Particle

ParticleType

Electron

Qualifier

Magnitude

Qualifier

Moment

ParticleQuantity

NumberDensity

Name

Electron Number Density, Extrapolation, Low

Description

MMS2 FPI/DES estimated (via extrapolation to 0) contribution to density integral below 10eV

Units

cm^-3

UnitsConversion

1.0e6>m^-3

Particle

ParticleType

Electron

Qualifier

Magnitude

Qualifier

Moment

ParticleQuantity

NumberDensity

Name

Electron Number Density, Extrapolation, High

Description

MMS2 FPI/DES estimated (via extrapolation to infinity) contribution to density integral above 30keV

Units

cm^-3

UnitsConversion

1.0e6>m^-3

Particle

ParticleType

Electron

Qualifier

Magnitude

Qualifier

Moment

ParticleQuantity

NumberDensity

Name

Electron Bulk Velocity Vector, DBCS

Description

MMS2 FPI/DES electron bulk-velocity vector in De-spun Body Spacecraft Coordinate System during this survey

Units

km/s

UnitsConversion

1.0e3>m/s

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

ParticleQuantity

FlowVelocity

Name

Electron Bulk Velocity Spintone Vector, DBCS

Description

MMS2 FPI/DES electron bulk-velocity estimated spintone vector in De-spun Body Spacecraft Coordinate System during this survey

Units

km/s

UnitsConversion

1.0e3>m/s

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

ParticleQuantity

FlowVelocity

Name

Electron Bulk Velocity Vector, GSE

Description

MMS2 FPI/DES electron bulk-velocity vector in GSE during this survey

Units

km/s

UnitsConversion

1.0e3>m/s

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

ParticleQuantity

FlowVelocity

Name

Electron Bulk Velocity Spintone Vector, GSE

Description

MMS2 FPI/DES electron bulk-velocity estimated spintone vector in GSE during this survey

Units

km/s

UnitsConversion

1.0e3>m/s

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

ParticleQuantity

FlowVelocity

Name

Electron Bulk Velocity Error Vector

Description

MMS2 FPI/DES electron bulk-velocity error vector during this survey

Units

km/s

UnitsConversion

1.0e3>m/s

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

Qualifier

Uncertainty

ParticleQuantity

FlowVelocity

Name

Electron Pressure Tensor, DBCS

Description

MMS2 FPI/DES electron pressure tensor in De-spun Body Spacecraft Coordinate System during this survey

Caveats

The 3⨯3 Matrix is represented as: Row 1: Pxx Pxy Pxz, Row 2: Pyx Pyy Pyz, Row 3: Pzx Pzy Pzz. Note that Pij=Pji.

Units

nPa

UnitsConversion

1.0e-9>Pa

Particle

ParticleType

Electron

Qualifier

Tensor

Qualifier

Moment

ParticleQuantity

Pressure

Name

Electron Pressure Tensor, GSE

Description

MMS2 FPI/DES electron pressure tensor in GSE during this survey

Caveats

The 3⨯3 Matrix is represented as: Row 1: Pxx Pxy Pxz, Row 2: Pyx Pyy Pyz, Row 3: Pzx Pzy Pzz. Note that Pij=Pji.

Units

nPa

UnitsConversion

1.0e-9>Pa

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Tensor

Qualifier

Moment

ParticleQuantity

Pressure

Name

Electron Pressure Tensor, Error

Description

MMS2 FPI/DES electron pressure tensor error during this survey

Caveats

The Error can be applied to Data expressed by using either DBCS or GSE Coordinates

Units

nPa

UnitsConversion

1.0e-9>Pa

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Tensor

Qualifier

Moment

Qualifier

Uncertainty

ParticleQuantity

Pressure

Name

Electron Temperature Tensor, DBCS

Description

MMS2 FPI/DES electron temperature tensor in De-spun Body Spacecraft Coordinate System during this survey

Caveats

The 3⨯3 Matrix is represented as: Row 1: Txx Txy Txz, Row 2: Tyx Tyy Tyz, Row 3: Tzx Tzy Tzz. Note that Tij=Tji.

Units

eV

UnitsConversion

1.602176565e-19>J

Particle

ParticleType

Electron

Qualifier

Tensor

Qualifier

Moment

ParticleQuantity

Temperature

Name

Electron Temperature Tensor, GSE

Description

MMS2 FPI/DES electron temperature tensor in GSE during this survey

Caveats

The 3⨯3 Matrix is represented as: Row 1: Txx Txy Txz, Row 2: Tyx Tyy Tyz, Row 3: Tzx Tzy Tzz. Note that Tij=Tji.

Units

eV

UnitsConversion

1.602176565e-19>J

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Tensor

Qualifier

Moment

ParticleQuantity

Temperature

Name

Electron Temperature Tensor, Error, DBCS

Description

MMS2 FPI/DES electron temperature tensor error during this survey

Caveats

The Error can be applied to Data expressed by using either DBCS or GSE Coordinates

Units

eV

UnitsConversion

1.602176565e-19>J

Particle

ParticleType

Electron

Qualifier

Tensor

Qualifier

Moment

Qualifier

Uncertainty

ParticleQuantity

Temperature

Name

Electron Heat Flux Vector, DBCS

Description

MMS2 FPI/DES electron heat-flux vector in DBCS during this survey

Units

mW/m^2

UnitsConversion

1.0e-3>W/m^2

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

ParticleQuantity

HeatFlux

Name

Electron Heat Flux Vector, GSE

Description

MMS2 FPI/DES electron heat-flux vector in GSE during this survey

Units

mW/m^2

UnitsConversion

1.0e-3>W/m^2

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

ParticleQuantity

HeatFlux

Name

Electron Heat Flux Error Vector

Description

MMS2 FPI/DES electron heat-flux error vector during this survey

Caveats

The Error can be applied to Data expressed by using either DBCS or GSE Coordinates

Units

mW/m^2

UnitsConversion

1.0e-3>W/m^2

CoordinateSystem

CoordinateRepresentation

Cartesian

CoordinateSystemName

GSE

Particle

ParticleType

Electron

Qualifier

Vector

Qualifier

Moment

Qualifier

Uncertainty

ParticleQuantity

HeatFlux

Name

Electron Sky Map Pitch Angle, Alpha

Description

MMS2 FPI/DES fast survey sky-map pitch angles

Caveats

Pitch Angles Angles used in Pitch Angle Spectrograms (Bent Pipe Field)

Units

°

UnitsConversion

0.0174532925>rad

Support

Qualifier

DirectionAngle.PolarAngle

SupportQuantity

Positional

Name

Electron Sky Map Pitch Angle, Alpha, Delta Value

Description

MMS2 FPI/DES fast survey sky-map pitch angle deltas

Units

°

UnitsConversion

0.0174532925>rad

Support

Qualifier

DirectionAngle.PolarAngle

SupportQuantity

Positional

Name

Electron Sky Map Energy

Description

MMS2 FPI/DES fast survey sky-map energies

Units

eV

UnitsConversion

1.602176565e-19>J

Particle

ParticleType

Electron

Qualifier

Array

ParticleQuantity

Energy

Name

Electron Sky Map Energy, Delta Value

Description

MMS2 FPI/DES fast survey sky-map delta energies

Caveats

Note that the Deltas are provided to indicate that the FPI is reporting the Energy Bin Centers. The Deltas do not necessarily reflect the Energy Bandwidth that is sampled by the FPI for a given Energy Step.

Units

eV

UnitsConversion

1.602176565e-19>J

Particle

ParticleType

Electron

Qualifier

Array

ParticleQuantity

Energy

Name

Electron Parallel Temperature

Description

MMS2 FPI/DES electron parallel temperature during this BP

Units

eV

UnitsConversion

1.602176565e-19>J

Particle

ParticleType

Electron

Qualifier

Parallel

Qualifier

FieldAligned

Qualifier

Scalar

ParticleQuantity

Temperature

Name

Electron Perpendicular Temperature

Description

MMS2 FPI/DES electron perpendicular temperature during this BP

Units

eV

UnitsConversion

1.602176565e-19>J

Particle

ParticleType

Electron

Qualifier

Perpendicular

Qualifier

Scalar

ParticleQuantity

Temperature

MMS-2 FPI DES Level-2 Fast electron moments (CDF)

Details

NumericalData