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MMS-4 FPI DIS Level-2 Fast ion distribution functions (CDF)

ResourceID
spase://CNES/NumericalData/CDPP-Archive/MMS-4/FPI/DIS/MMS_FPI_4_L2_FAST_DIS_DIST

Description
This dataset provides the full ion distribution functions at the FAST cadence (4.5 s). The data is provided in units of phase space density. The reference frame is related to the instrument frame, and is called near-GSE. 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)

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NumericalData

ResourceID
spase://CNES/NumericalData/CDPP-Archive/MMS-4/FPI/DIS/MMS_FPI_4_L2_FAST_DIS_DIST
ResourceHeader
ResourceName
MMS-4 FPI DIS Level-2 Fast ion distribution functions (CDF)
DOI
https://doi.org/10.24400/802406/zjpm-m7d7
ReleaseDate
2022-07-07 14:05:25Z
Description
This dataset provides the full ion distribution functions at the FAST cadence (4.5 s). The data is provided in units of phase space density. The reference frame is related to the instrument frame, and is called near-GSE. 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

AccessInformation
RepositoryID
Availability
Online
AccessURL
Name
REGARDS
URL
Description
Access via CNES Data Archive for CDPP
Format
CDF
InstrumentIDs
MeasurementType
EnergeticParticles
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2015-07-28 00:00:00Z
StopDate
2021-09-30 00:00:00Z
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Magnetotail
ObservedRegion
Earth.Magnetosphere.Main
ObservedRegion
Earth.Magnetosphere.RadiationBelt
ObservedRegion
Earth.NearSurface.EquatorialRegion
ObservedRegion
Earth.NearSurface.Plasmasphere
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Data Quality Error Flags
Description
MMS4 FPI/DIS Vector of Data Quality Indicator Flag Flags at Survey Start Time
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=Compression Pipeline Error
Support
SupportQuantity
Other
Parameter #2
Name
Compression Flag
Description
MMS4 FPI/DIS Compression Lossless/Lossy Indicator Flag at Survey Start Time
Caveats
Compression Loss Indicator, 0=Lossless, 1=Lossy
Support
SupportQuantity
Other
Parameter #3
Name
Start Del-Phi Count
Description
MMS4 FPI/DIS Del-Phi (Observatory 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
Parameter #4
Name
Start Del-Phi Angle
Description
MMS4 FPI/DIS Del-Phi (Observatory 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.
Support
Qualifier
DirectionAngle.AzimuthAngle
Qualifier
PhaseAngle
SupportQuantity
Positional
Parameter #5
Name
Ion Sky Map Distribution
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Instrument Distribution. Column 1 Labels from MMS4_DIS_PHI_FAST: [2.7500 deg,14.000 deg,25.250 deg,36.500 deg,47.750 deg,59.000 deg,70.250 deg,81.500 deg,92.750 deg,104.00 deg,115.25 deg,126.50 deg,137.75 deg,149.00 deg,160.25 deg,171.50 deg,182.75 deg,194.00 deg,205.25 deg,216.50 deg,227.75 deg,239.00 deg,250.25 deg,261.50 deg,272.75 deg,284.00 deg,295.25 deg,306.50 deg,317.75 deg,329.00 deg,340.25 deg,351.50 deg]. Column 2 Labels from MMS4_DIS_THETA_FAST: [5.6250 deg,16.875 deg,28.125 deg,39.375 deg,50.625 deg,61.875 deg,73.125 deg,84.375 deg,95.625 deg,106.88 deg,118.13 deg,129.38 deg,140.63 deg,151.88 deg,163.13 deg,174.38 deg]. Column 3 Labels from MMS4_DIS_ENERGY_FAST: [energy00,energy01,energy02,energy03,energy04,energy05,energy07,energy07,energy08,energy09,energy10,energy11,energy12,energy13,energy14,energy15,energy16,energy17,energy18,energy19,energy20,energy21,energy22,energy23,energy24,energy25,energy26,energy27,energy28,energy29,energy30,energy31].
Caveats
Azimuth Bin: Sector Index=00 looks after (Spin Phase) the Sun Direction, ..., Sector Index=31 looks before the Sun Direction. Head Field of View: Pixel Index=00 looks to Zenith, ..., Pixel Index=15 looks to Nadir. FPI Operations nominally bin Data from 64 Energy Filters into 32 pairwise Energy Bins, indexed 00-31. Nominally, Bins are indexed in increasing Energy Order. See the FPI Documents for Details.
Units
s^3/cm^6
UnitsConversion
1.0e12>s^3/m^6
Particle
ParticleType
Ion
Qualifier
Array
ParticleQuantity
PhaseSpaceDensity
Parameter #6
Name
Ion Sky Map Zenith Angle, Theta
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Zenith Angle, Theta
Caveats
Pixel Zenith Angles, i.e., the Polar Angle of the Instrument Look Direction
Support
Qualifier
DirectionAngle.PolarAngle
SupportQuantity
Positional
Parameter #7
Name
Ion Sky Map Zenith Angle, Theta, Delta Value
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Zenith Angle, Theta, Bin Delta Value
Caveats
Pixel Zenith Angle Deltas
Support
Qualifier
DirectionAngle.PolarAngle
SupportQuantity
Positional
Parameter #8
Name
Ion Sky Map Energy
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Energy
Caveats
Geometric Mean of Parity 0 and Parity 1 Energies in the 64-step FPI Energy Table
Units
eV
UnitsConversion
1.602176565e-19>J
Particle
ParticleType
Ion
Qualifier
Array
ParticleQuantity
Energy
Parameter #9
Name
Ion Sky Map Energy, Delta Value
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Energy, Delta Value
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
Ion
Qualifier
Array
ParticleQuantity
Energy
Parameter #10
Name
Ion Sky Map Azimuth Angle, Phi
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Azimuth Angle, Phi
Caveats
Azimuth Angles in the Instrument Frame, i.e., the Azimuthal Angle of the Instrument Look Direction
Units
°
UnitsConversion
0.0174532925>rad
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #11
Name
Ion Sky Map Azimuth Angle, Phi, Delta Value
Description
MMS4 FPI/DIS Ion Fast Survey Sky Map Azimuth Angle, Phi, Bin Delta Value
Caveats
Azimuth Angle Deltas
Units
°
UnitsConversion
0.0174532925>rad
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional