2.4.0
spase://CNES/NumericalData/CDPP-Archive/MMS-3/FPI/DES/MMS_FPI_3_L2_FAST_DES_MOM
MMS-3 FPI DES Level-2 Fast electron moments (CDF)
https://doi.org/10.24400/802406/k8mr-2r19
2022-07-07T14:05:24Z
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)
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.
spase://CNES/Person/CDPP-Archive/James.L.Burch
PrincipalInvestigator
spase://CNES/Person/CDPP-Archive/Barbara.Giles
PrincipalInvestigator
spase://CNES/Person/CDPP-Archive/Vincent.Genot
CoInvestigator
spase://CNES/Person/CDPP-Archive/Jean-Andre.Sauvaud
CoInvestigator
spase://CNES/Person/CDPP-Archive/Benoit.Lavraud
CoInvestigator
spase://CNES/Repository/CDPP-Archive/REGARDS-CDPP
Online
REGARDS
https://regards.cnes.fr/user/cdpp/modules/1777?sp=DatasetName;q=DatasetName:MMS_FPI_3_L2_FAST_DES_MOM
Access via CNES Data Archive for CDPP
CDF
spase://CNES/Instrument/CDPP-Archive/MMS-3/FPI/DES
EnergeticParticles
Spectrum
ThermalPlasma
2015-05-06T00:00:00Z
2021-09-30T00:00:00Z
Earth.Magnetosheath
Earth.Magnetosphere
Earth.Magnetosphere.Magnetotail
Earth.Magnetosphere.Main
Earth.Magnetosphere.RadiationBelt
Earth.NearSurface.EquatorialRegion
Earth.NearSurface.Plasmasphere
Heliosphere.NearEarth
Data Quality Error Flags
MMS3 FPI/DES dataQuality errorFlags
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)
Other
Compression Flag
MMS3 FPI/DES Compression Lossless/Lossy Indicator Flag at Survey Start Time
Compression Loss Indicator, 0=Lossless, 1=Lossy
Other
Start Del-Phi Count
MMS3 FPI/DES Del-Phi (obs spin-phase) count at survey-start time
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.
Other
Start Del-Phi Angle
MMS3 FPI/DES Del-Phi (obs spin-phase) angle at survey-start time
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.
°
0.0174532925>rad
DirectionAngle.AzimuthAngle
PhaseAngle
Positional
Electron Pitch Angle Distribution, Low Energies
MMS3 FPI/DES electron pitch-angle distribution for low energies during this survey
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.
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Magnitude
NumberFlux
Electron Pitch Angle Distribution, Mid Energies
MMS3 FPI/DES electron pitch-angle distribution for mid energies during this survey
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.
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Magnitude
NumberFlux
Electron Pitch Angle Distribution, High Energies
MMS3 FPI/DES electron pitch-angle distribution for high energies during this survey
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.
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Magnitude
NumberFlux
Electron Energy Spectrum, DBCS +X Direction
MMS3 FPI/DES electron energy spectrum near +X_DBCS during this survey
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°).
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Cartesian
GSE
Electron
Array
Component.I
NumberFlux
Electron Energy Spectrum, DBCS -X Direction
MMS3 FPI/DES electron energy spectrum near X_DBCS during this survey
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°).
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Cartesian
GSE
Electron
Array
Component.I
NumberFlux
Electron Energy Spectrum, DBCS +Y Direction
MMS3 FPI/DES electron energy spectrum near +Y_DBCS during this survey
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>
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Cartesian
GSE
Electron
Array
Component.J
NumberFlux
Electron Energy Spectrum, DBCS -Y Direction
MMS3 FPI/DES electron energy spectrum near Y_DBCS during this survey
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°).
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Cartesian
GSE
Electron
Array
Component.J
NumberFlux
Electron Energy Spectrum, DBCS +Z Direction
MMS3 FPI/DES electron energy spectrum near +Z_DBCS during this survey
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°).
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Cartesian
GSE
Electron
Array
Component.K
NumberFlux
Electron Energy Spectrum, DBCS -Z Direction
MMS3 FPI/DES electron energy spectrum near Z_DBCS during this survey
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°).
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Cartesian
GSE
Electron
Array
Component.K
NumberFlux
Electron Energy Spectrum, B Parallel Direction
MMS3 FPI/DES electron energy parallel to the magnetic field direction during this survey
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.
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Array
Parallel
NumberFlux
Electron Energy Spectrum, B Anti-Parallel Direction
MMS3 FPI/DES electron energy anti-parallel to the magnetic field direction during this survey
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.
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Array
NumberFlux
Electron Energy Spectrum, B Perpendicular Direction
MMS3 FPI/DES electron energy perpendicular to the magnetic field direction during this survey
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.
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Array
NumberFlux
Electron Energy Spectrum, Omni-Directional
MMS3 FPI/DES omni-directional electron energy spectrum during this survey
Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over all Directions (Flow or Look).
keV/(cm^2 s sr keV)
1.0e4>J/(m^2 s sr J)
Electron
Array
NumberFlux
Electron Number Density
MMS3 FPI/DES electron number density during this survey
cm^-3
1.0e6>m^-3
Electron
Magnitude
Moment
NumberDensity
Electron Number Density, Error
MMS3 FPI/DES electron number density error during this survey
cm^-3
1.0e6>m^-3
Electron
Magnitude
Moment
NumberDensity
Electron Number Density, Extrapolation, Low
MMS3 FPI/DES estimated (via extrapolation to 0) contribution to density integral below 10eV
cm^-3
1.0e6>m^-3
Electron
Magnitude
Moment
NumberDensity
Electron Number Density, Extrapolation, High
MMS3 FPI/DES estimated (via extrapolation to infinity) contribution to density integral above 30keV
cm^-3
1.0e6>m^-3
Electron
Magnitude
Moment
NumberDensity
Electron Bulk Velocity Vector, DBCS
MMS3 FPI/DES electron bulk-velocity vector in De-spun Body Spacecraft Coordinate System during this survey
km/s
1.0e3>m/s
Electron
Vector
Moment
FlowVelocity
Electron Bulk Velocity Spintone Vector, DBCS
MMS3 FPI/DES electron bulk-velocity estimated spintone vector in De-spun Body Spacecraft Coordinate System during this survey
km/s
1.0e3>m/s
Electron
Vector
Moment
FlowVelocity
Electron Bulk Velocity Vector, GSE
MMS3 FPI/DES electron bulk-velocity vector in GSE during this survey
km/s
1.0e3>m/s
Cartesian
GSE
Electron
Vector
Moment
FlowVelocity
Electron Bulk Velocity Spintone Vector, GSE
MMS3 FPI/DES electron bulk-velocity estimated spintone vector in GSE during this survey
km/s
1.0e3>m/s
Cartesian
GSE
Electron
Vector
Moment
FlowVelocity
Electron Bulk Velocity Error Vector
MMS3 FPI/DES electron bulk-velocity error vector during this survey
km/s
1.0e3>m/s
Cartesian
GSE
Electron
Vector
Moment
Uncertainty
FlowVelocity
Electron Pressure Tensor, DBCS
MMS3 FPI/DES electron pressure tensor in De-spun Body Spacecraft Coordinate System during this survey
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.
nPa
1.0e-9>Pa
Electron
Tensor
Moment
Pressure
Electron Pressure Tensor, GSE
MMS3 FPI/DES electron pressure tensor in GSE during this survey
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.
nPa
1.0e-9>Pa
Cartesian
GSE
Electron
Tensor
Moment
Pressure
Electron Pressure Tensor, Error
MMS3 FPI/DES electron pressure tensor error during this survey
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
nPa
1.0e-9>Pa
Cartesian
GSE
Electron
Tensor
Moment
Uncertainty
Pressure
Electron Temperature Tensor, DBCS
MMS3 FPI/DES electron temperature tensor in De-spun Body Spacecraft Coordinate System during this survey
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.
eV
1.602176565e-19>J
Electron
Tensor
Moment
Temperature
Electron Temperature Tensor, GSE
MMS3 FPI/DES electron temperature tensor in GSE during this survey
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.
eV
1.602176565e-19>J
Cartesian
GSE
Electron
Tensor
Moment
Temperature
Electron Temperature Tensor, Error, DBCS
MMS3 FPI/DES electron temperature tensor error during this survey
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
eV
1.602176565e-19>J
Electron
Tensor
Moment
Uncertainty
Temperature
Electron Heat Flux Vector, DBCS
MMS3 FPI/DES electron heat-flux vector in DBCS during this survey
mW/m^2
1.0e-3>W/m^2
Cartesian
GSE
Electron
Vector
Moment
HeatFlux
Electron Heat Flux Vector, GSE
MMS3 FPI/DES electron heat-flux vector in GSE during this survey
mW/m^2
1.0e-3>W/m^2
Cartesian
GSE
Electron
Vector
Moment
HeatFlux
Electron Heat Flux Error Vector
MMS3 FPI/DES electron heat-flux error vector during this survey
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
mW/m^2
1.0e-3>W/m^2
Cartesian
GSE
Electron
Vector
Moment
Uncertainty
HeatFlux
Electron Sky Map Pitch Angle, Alpha
MMS3 FPI/DES fast survey sky-map pitch angles
Pitch Angles Angles used in Pitch Angle Spectrograms (Bent Pipe Field)
°
0.0174532925>rad
DirectionAngle.PolarAngle
Positional
Electron Sky Map Pitch Angle, Alpha, Delta Value
MMS3 FPI/DES fast survey sky-map pitch angle deltas
°
0.0174532925>rad
DirectionAngle.PolarAngle
Positional
Electron Sky Map Energy
MMS3 FPI/DES fast survey sky-map energies
eV
1.602176565e-19>J
Electron
Array
Energy
Electron Sky Map Energy, Delta Value
MMS3 FPI/DES fast survey sky-map delta energies
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.
eV
1.602176565e-19>J
Electron
Array
Energy
Electron Parallel Temperature
MMS3 FPI/DES electron parallel temperature during this BP
eV
1.602176565e-19>J
Electron
Parallel
FieldAligned
Scalar
Temperature
Electron Perpendicular Temperature
MMS3 FPI/DES electron perpendicular temperature during this BP
eV
1.602176565e-19>J
Electron
Perpendicular
Scalar
Temperature