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MMS 4 Fast Plasma Investigation, Dual Ion Spectrometer (FPI, DIS) Distribution Moments, Level 2 (L2), Fast Mode, 4.5 s Data

(2022). MMS 4 Fast Plasma Investigation, Dual Ion Spectrometer (FPI, DIS) Distribution Moments, Level 2 (L2), Fast Mode, 4.5 s Data [Data set]. NASA Space Physics Data Facility. https://doi.org/10.48322/54t4-e826. Accessed on .

Note: Proper references, including those in BibTex or other formats, should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/MMS/4/FastPlasmaInvestigation/DIS/Fast/Level2/Moments/PT4.5S

Description

The Fast Plasma Instrument (FPI) usually Operates in Fast Survey (FS) Mode in the MMS Region Of Interest (ROI) for the current Mission Phase. Data are taken at Burst (30/150 ms for DES/DIS) Resolution are aggregated onboard and made available at Survey (4.5 s) Resolution in this Mode. Planning around Calibration Activities, avoidance of Earth Radiation Belts, etc., when possible, FPI usually Operates in Slow Survey (SS) Mode outside of ROI, and then only the 60 s Resolution Survey Data are available. This Product contains Results from integrating the standard Moments of Phase Space Distributions formed from the indicated Data Type (DES/DIS Burst, FS or SS). For Convenience, some additional Parameters are included to augment those most commonly found in a Moments Product of this sort, plus Time Stamps and other Annotation characterizing the State of the Instrument System at the indicated Time.

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Details

Version:2.5.0

NumericalData

ResourceID
spase://NASA/NumericalData/MMS/4/FastPlasmaInvestigation/DIS/Fast/Level2/Moments/PT4.5S
ResourceHeader
ResourceName
MMS 4 Fast Plasma Investigation, Dual Ion Spectrometer (FPI, DIS) Distribution Moments, Level 2 (L2), Fast Mode, 4.5 s Data
AlternateName
MMS4_FPI_FAST_L2_DIS-MOMS
DOI
https://doi.org/10.48322/54t4-e826
ReleaseDate
2023-03-28 12:34:56.789
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2022-08-04 12:34:56.789
Note
Added DOI and PublicationInfo minted by LFB, updated the RepositoryID, updated the SPDF MetadataContact Person to Robert M. Candey, metadata updated to SPASE 2.4.1, reviewed by LFB 20220803
RevisionEvent
ReleaseDate
2023-03-04 12:34:56.789
Note
Standardized the ResourceName Format, Set AlternateName equal to the ProductKey, Revised the Acknowledgement, PublicationInfo Authors, and Contact Person list per request of the MMS FPI team, metadata updated to SPASE 2.5.0, reviewed by LFB 20230304
RevisionEvent
ReleaseDate
2023-03-28 12:34:56.789
Note
Remove Stephen Kreisler from Author and Acknowledgment lists per request of the MMS FPI team, revised by LFB 20230328
Description

The Fast Plasma Instrument (FPI) usually Operates in Fast Survey (FS) Mode in the MMS Region Of Interest (ROI) for the current Mission Phase. Data are taken at Burst (30/150 ms for DES/DIS) Resolution are aggregated onboard and made available at Survey (4.5 s) Resolution in this Mode. Planning around Calibration Activities, avoidance of Earth Radiation Belts, etc., when possible, FPI usually Operates in Slow Survey (SS) Mode outside of ROI, and then only the 60 s Resolution Survey Data are available. This Product contains Results from integrating the standard Moments of Phase Space Distributions formed from the indicated Data Type (DES/DIS Burst, FS or SS). For Convenience, some additional Parameters are included to augment those most commonly found in a Moments Product of this sort, plus Time Stamps and other Annotation characterizing the State of the Instrument System at the indicated Time.

Acknowledgement
Please acknowledge D.J. Gershman, B.L. Giles, C.J. Pollock, T.E. Moore, and J.L. Burch for use of these data
PublicationInfo
Authors
Gershman, Daniel, J.; Giles, Barbara, L.; Pollock, Craig, J.; Moore, Thomas, E.; Burch, James, L.
PublicationDate
2022-01-01 00:00:00
PublishedBy
NASA Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.InstrumentLead
CoInvestigator		spase://SMWG/Person/Daniel.J.Gershman
2.InstrumentLead
CoInvestigator		spase://SMWG/Person/Barbara.L.GilesRetired
3.InstrumentLead
CoInvestigator		spase://SMWG/Person/Craig.J.PollockRetired
4.InstrumentLead
CoInvestigator		spase://SMWG/Person/Thomas.E.MooreRetired
5.Developerspase://SMWG/Person/Stephen.KreislerGroundSystemLead
6.PrincipalInvestigatorspase://SMWG/Person/James.L.Burch
7.HostContactspase://SMWG/Person/MMS_SDC_POC
8.MetadataContactspase://SMWG/Person/Robert.M.Candey
9.MetadataContactspase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
The Magnetospheric Multiscale (MMS) Mission home page at Goddard Space Flight Center (GSFC)
URL
https://mms.gsfc.nasa.gov/
Description

The Magnetospheric Multiscale (MMS) Mission Home Page hosted by the Goddard Space Flight Center (GSFC).

InformationURL
Name
The Magnetospheric Multiscale (MMS) Mission home page at Goddard Space Flight Center (GSFC)
URL
https://mms.gsfc.nasa.gov/
Description

The Magnetospheric Multiscale (MMS) Mission Home Page hosted at the Goddard Space Flight Center (GSFC)

InformationURL
Name
The MMS Mission home page at the Science Data Center (SDC) LASP, UC Boulder
URL
https://lasp.colorado.edu/mms/sdc/public/
Description

The Magnetospheric Multiscale (MMS) Mission Home Page hosted by the Laboratory of Atmospheric and Space Physics, Science Data Center (LASP, SDC) at the University of Colorado, Boulder

InformationURL
Name
NASA Web Page providing Inforamtion for the Magnetospheric Multiscale (MMS) Fast Plasma Investigation (FPI) Instrument
URL
https://www.nasa.gov/mission_pages/mms/spacecraft/mms-instruments.html#fpi
Description

NASA Web Page providing an Overview of the Magnetospheric Multiscale (MMS) Fast Plasma Investigation (FPI) Instrument

PriorIDs
spase://VSPO/NumericalData/MMS/4/FastPlasmaInvestigation/DIS/Burst/Level2/Moments/PT4.5S
spase://VSPO/NumericalData/MMS/4/FastPlasmaInvestigation/DIS/Fast/Level2/Moments/PT4.5S
AccessInformation
RepositoryID
spase://SMWG/Repository/UCOLO/LASP/MMS_SDC
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from the MMS SDC (not with most browsers)
URL
ftps://lasp.colorado.edu/mms/sdc/public/data/mms4/fpi/fast/l2/dis-moms/
Description

In CDF via ftp from the MMS Science Data Center

AccessURL
Name
HTTPS from the MMS SDC
URL
https://lasp.colorado.edu/mms/sdc/public/data/mms4/fpi/fast/l2/dis-moms/
Description

In CDF via http from the MMS Science Data Center

Format
CDF
Encoding
None
Acknowledgement
Please acknowledge D.J. Gershman, B.L. Giles, C.J. Pollock, T.E. Moore, and J.L. Burch. Also please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/mms/mms4/fpi/fast/l2/dis-moms/
Description

In CDF via ftp from SPDF

AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/mms/mms4/fpi/fast/l2/dis-moms/
Description

In CDF via http from SPDF

AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=MMS4_FPI_FAST_L2_DIS-MOMS&index=sp_phys
ProductKey
MMS4_FPI_FAST_L2_DIS-MOMS
Description

Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb

Format
CDF
Encoding
None
Acknowledgement
Please acknowledge D.J. Gershman, B.L. Giles, C.J. Pollock, T.E. Moore, and J.L. Burch. Also please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
MMS4_FPI_FAST_L2_DIS-MOMS
Description

Web Service to this product using the HAPI interface

Format
CSV
Acknowledgement
Please acknowledge D.J. Gershman, B.L. Giles, C.J. Pollock, T.E. Moore, and J.L. Burch. Also please acknowledge the data providers and CDAWeb when using these data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/MMS/1/FastPlasmaInstrument/DIS
MeasurementType
EnergeticParticles
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2015-07-28 00:00:00.000
StopDate
2018-09-16 23:59:59.999
Cadence
PT4.5S
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
Caveats
This SPASE Numerical Data Description is for the MMS4_FPI_FAST_L2_DIS-MOMS Data Product. This Numerical Data Description has been written by utilizing the ADAPT Software Package. ADAPT can harvest Metadata that are embedded in Data Files stored in Common Data File Format that are then leveraged to populate corresponding SPASE Schema Text Fields. Typically, the CDF embedded Metadata are harvested from CDF Master Files, which contain no actual Data, in order to populate SPASE Documents. In this case, the Metadata were harvested from a "Data" CDF, which contains actual Data Observations from one of the four MMS FPI Instruments. The "Data" CDF used by ADAPT has the following Specifications: Data Product Version Number: 3.3.0, CDF Generation Date: 2018-06-28T22:56:20, CDF Skeleton Version Revision Number: 8703, and CDF Skeleton Version Revision Date: 2018-06-14T15:59:27.
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description

Epoch Time Tags in Terrestrial Time 2000 (TT2000), Nanoseconds since J2000

Caveats
Survey Data Begin Time, derived from the Survey Packet Time. This Parameter exhibits an increasing Monotonic Progression.
Cadence
PT4.5S
Units
ns
UnitsConversion
1.0e-9>s
RenderingHints
AxisLabel
Epoch
ScaleType
LinearScale
ValidMin
1990-01-01T00:00:00.000000000
ValidMax
2100-01-01T00:00:01.000000000
FillValue
9999-12-31T23:59:59.999999999
Support
SupportQuantity
Temporal
Parameter #2
Name
Epoch Plus Var
ParameterKey
Epoch_plus_var
Description

Epoch Plus Var

Cadence
PT4.5S
Units
s
UnitsConversion
1.0>s
RenderingHints
ValueFormat
F4.2
ValidMin
0.0
ValidMax
4.5
Support
SupportQuantity
Temporal
Parameter #3
Name
Epoch Minus Var
ParameterKey
Epoch_minus_var
Description

Epoch Minus Var

Cadence
PT4.5S
Units
s
UnitsConversion
1.0>s
RenderingHints
ValueFormat
F4.2
ValidMin
0.0
ValidMax
4.5
Support
SupportQuantity
Temporal
Parameter #4
Name
Data Quality Error Flags
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_errorflags_fast
Description

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=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_DIS ≤ 0.0 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), Bit-13=Significant (≥20%) Penetrating Radiation
Cadence
PT4.5S
RenderingHints
DisplayType
TimeSeries
AxisLabel
Error_Flags
ValueFormat
I10
ScaleType
LinearScale
ValidMin
0
ValidMax
4294967294
FillValue
4294967295
Support
SupportQuantity
Other
Parameter #5
Name
Compression Flag
ParameterKey
mms4_dis_compressionloss_fast
Description

Compression Lossless/Lossy Indicator Flag at Survey Start Time

Caveats
Compression Loss Indicator, 0=Lossless, 1=Lossy
Cadence
PT4.5S
RenderingHints
DisplayType
TimeSeries
AxisLabel
Compress_Flag
ValueFormat
I1
ScaleType
LinearScale
ValidMin
0
ValidMax
1
FillValue
255
Support
SupportQuantity
Other
Parameter #6
Name
Start Del-Phi Count
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_startdelphi_count_fast
Description

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.
Cadence
PT4.5S
RenderingHints
DisplayType
TimeSeries
AxisLabel
DelPhi_Count
ValueFormat
I4.4
ScaleType
LinearScale
ValidMin
0
ValidMax
5761
FillValue
65535
Support
SupportQuantity
Other
Parameter #7
Name
Start Del-Phi Angle
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_startdelphi_angle_fast
Description

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.
Cadence
PT4.5S
Units
°
UnitsConversion
0.0174532925>rad
RenderingHints
DisplayType
TimeSeries
AxisLabel
DelPhi_Angle
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
360.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
Qualifier
PhaseAngle
SupportQuantity
Positional
Parameter #8
Name
Ion Energy Spectrum, DBCS +X Direction
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_px_fast
Description

Ion Energy Spectrum "near" the De-spun Body Spacecraft Coordinate System, DBCS, +X Axis 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°).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_px
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
Component.I
ParticleQuantity
NumberFlux
Parameter #9
Name
Ion Energy Spectrum, DBCS -X Direction
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_mx_fast
Description

Ion Energy Spectrum "near" the De-spun Body Spacecraft Coordinate System, DBCS, -X Axis 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°).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_mx
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
Component.I
ParticleQuantity
NumberFlux
Parameter #10
Name
Ion Energy Spectrum, DBCS +Y Direction
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_py_fast
Description

Ion Energy Spectrum "near" the De-spun Body Spacecraft Coordinate System, DBCS, +Y Axis 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°).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_py
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
Component.J
ParticleQuantity
NumberFlux
Parameter #11
Name
Ion Energy Spectrum, DBCS -Y Direction
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_my_fast
Description

Ion Energy Spectrum "near" the De-spun Body Spacecraft Coordinate System, DBCS, -Y Axis 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°).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_my
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
Component.J
ParticleQuantity
NumberFlux
Parameter #12
Name
Ion Energy Spectrum, DBCS +Z Direction
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_pz_fast
Description

Ion Energy Spectrum "near" the De-spun Body Spacecraft Coordinate System, DBCS, +Z Axis 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°).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_pz
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
Component.K
ParticleQuantity
NumberFlux
Parameter #13
Name
Ion Energy Spectrum, DBCS -Z Direction
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_mz_fast
Description

Ion Energy Spectrum "near" the De-spun Body Spacecraft Coordinate System, DBCS, -Z Axis 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°).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_mz
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
Qualifier
Component.K
ParticleQuantity
NumberFlux
Parameter #14
Name
Ion Energy Spectrum, Omni-Directional
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energyspectr_omni_fast
Description

Omni-Directional Ion Energy Spectrum during this Survey

Caveats
Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over all Directions (Flow or Look).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
RenderingHints
DisplayType
Spectrogram
AxisLabel
DEF_Omni
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
ParticleQuantity
NumberFlux
Parameter #15
Name
Ion Energy Spectrum, Background
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_spectr_bg_fast
Description

Ion Energy Spectrum Background during this Survey

Caveats
Background Differential Energy Flux by Energy Bin, averaged (weighted by Solid Angle) over all Directions (Flow or Look).
Cadence
PT4.5S
Units
keV/(cm^2 s sr keV)
UnitsConversion
1.0e4>J/(m^2 s sr J)
RenderingHints
DisplayType
TimeSeries
AxisLabel
DEF_Spect_BG
ValueFormat
E12.2
ScaleType
LogScale
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Scalar
Qualifier
Magnitude
ParticleQuantity
NumberFlux
Parameter #16
Name
Ion Number Density, Background
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_numberdensity_bg_fast
Description

Ion Number Density Background during this Survey

Caveats
Background Number Density derived via Integration of the estimated Background Differential Energy Flux.
Cadence
PT4.5S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
N_BG
ValueFormat
E12.2
ScaleType
LogScale
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #17
Name
Ion Number Density
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_numberdensity_fast
Description

Ion Number Density during this Survey

Cadence
PT4.5S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
N
ValueFormat
E12.2
ScaleType
LogScale
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #18
Name
Ion Number Density, Error
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_numberdensity_err_fast
Description

Ion Number Density Error during this Survey

Cadence
PT4.5S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
N_Error
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #19
Name
Ion Number Density, Extrapolation, Low
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_densityextrapolation_low_fast
Description

Estimated Contribution (via Extrapolation to Zero) to the Ion Number Density Integral below 10 eV

Cadence
PT4.5S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
N
ValueFormat
E12.2
ScaleType
LogScale
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #20
Name
Ion Number Density, Extrapolation, High
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_densityextrapolation_high_fast
Description

Estimated Contribution (via Extrapolation to Infinity) to the Ion Number Density Integral above 30 keV

Cadence
PT4.5S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
N
ValueFormat
E12.2
ScaleType
LogScale
ValidMin
0.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
Qualifier
Moment
ParticleQuantity
NumberDensity
Parameter #21
Name
Ion Bulk Velocity Vector, DBCS
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_bulkv_dbcs_fast
Description

Ion Bulk Velocity Vector during this Survey, De-spun Body Spacecraft Coordinate System, DBCS

Cadence
PT4.5S
Units
km/s
UnitsConversion
1.0e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Vx_DBCS
Index
1
Element
Name
Vy_DBCS
Index
2
Element
Name
Vz_DBCS
Index
3
ValidMin
-2500.0
ValidMax
2500.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
FlowVelocity
Parameter #22
Name
Ion Bulk Velocity Spintone Vector, DBCS
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_bulkv_spintone_dbcs_fast
Description

Ion Bulk Velocity estimated Spintone Vector during this Survey, De-spun Body Spacecraft Coordinate System, DBCS

Caveats
Estimated Systematic Error (Positive or Negative) in Spin Plane Bulk Velocity (km/s) due to imperfect Sensor Suite Flat-Fielding. This Error can be subtracted from the Bulk Velocity to obtain the corrected Velocity Vector.
Cadence
PT4.5S
Units
km/s
UnitsConversion
1.0e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Vx_spintone_DBCS
Index
1
Element
Name
Vy_spintone_DBCS
Index
2
Element
Name
Vz_spintone_DBCS
Index
3
ValidMin
-2500.0
ValidMax
2500.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
FlowVelocity
Parameter #23
Name
Ion Bulk Velocity Vector, GSE
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_bulkv_gse_fast
Description

Ion Bulk Velocity Vector during this Survey in Geocentric Solar Ecliptic, GSE, Coordinates

Cadence
PT4.5S
Units
km/s
UnitsConversion
1.0e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Vx_GSE
Index
1
Element
Name
Vy_GSE
Index
2
Element
Name
Vz_GSE
Index
3
ValidMin
-2500.0
ValidMax
2500.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
FlowVelocity
Parameter #24
Name
Ion Bulk Velocity Spintone Vector, GSE
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_bulkv_spintone_gse_fast
Description

Ion Bulk Velocity estimated Spintone Vector during this Survey in Geocentric Solar Ecliptic, GSE, Coordinates

Caveats
Estimated Systematic Error (Positive or Negative) in Spin Plane Bulk Velocity (km/s) due to imperfect Sensor Suite Flat-Fielding. This Error can be subtracted from the Bulk Velocity to obtain the corrected Velocity Vector.
Cadence
PT4.5S
Units
km/s
UnitsConversion
1.0e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Vx_spintone_GSE
Index
1
Element
Name
Vy_spintone_GSE
Index
2
Element
Name
Vz_spintone_GSE
Index
3
ValidMin
-2500.0
ValidMax
2500.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
FlowVelocity
Parameter #25
Name
Ion Bulk Velocity Error Vector
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_bulkv_err_fast
Description

Ion Bulk Velocity Error Vector during this Survey

Caveats
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
Cadence
PT4.5S
Units
km/s
UnitsConversion
1.0e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Vx_err
Index
1
Element
Name
Vy_err
Index
2
Element
Name
Vz_err
Index
3
ValidMin
0.0
ValidMax
5000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
Qualifier
Uncertainty
ParticleQuantity
FlowVelocity
Parameter #26
Name
Ion Pressure Tensor, DBCS
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_prestensor_dbcs_fast
Description

Ion Pressure Tensor during this Survey, De-spun Body Spacecraft Coordinate System, DBCS. Column 1 Labels from : ["x","y","z"]. Column 2 Labels from : ["x","y","z"].

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.
Cadence
PT4.5S
Units
nPa
UnitsConversion
1.0e-9>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
P_DBCS
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3 3
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
Pressure
Parameter #27
Name
Ion Pressure Tensor, GSE
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_prestensor_gse_fast
Description

Ion Pressure Tensor during this Survey in Geocentric Solar Ecliptic, GSE, Coordinates. Column 1 Labels from : ["x","y","z"]. Column 2 Labels from : ["x","y","z"].

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.
Cadence
PT4.5S
Units
nPa
UnitsConversion
1.0e-9>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
P_GSE
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3 3
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
Pressure
Parameter #28
Name
Ion Pressure Tensor, Error
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_prestensor_err_fast
Description

Ion Pressure Tensor Error during this Survey. Column 1 Labels from : ["x","y","z"]. Column 2 Labels from : ["x","y","z"].

Caveats
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
Cadence
PT4.5S
Units
nPa
UnitsConversion
1.0e-9>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
P_Error
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3 3
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
Qualifier
Uncertainty
ParticleQuantity
Pressure
Parameter #29
Name
Ion Pressure, Background
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_pres_bg_fast
Description

Ion Pressure Background during this Survey

Cadence
PT4.5S
Units
nPa
UnitsConversion
1.0e-9>Pa
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
DEF_Pres_BG
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
-100000.0
ValidMax
100000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Scalar
Qualifier
Moment
ParticleQuantity
Pressure
Parameter #30
Name
Ion Temperature Tensor, DBCS
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_temptensor_dbcs_fast
Description

Ion Temperature Tensor during this Survey, De-spun Body Spacecraft Coordinate System, DBCS. Column 1 Labels from : ["x","y","z"]. Column 2 Labels from : ["x","y","z"].

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.
Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
T_DBCS
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3 3
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
Temperature
Parameter #31
Name
Ion Temperature Tensor, GSE
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_temptensor_gse_fast
Description

Ion Temperature Tensor during this Survey in Geocentric Solar Ecliptic, GSE, Coordinates. Column 1 Labels from : ["x","y","z"]. Column 2 Labels from : ["x","y","z"].

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.
Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
T_GSE
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3 3
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
ParticleQuantity
Temperature
Parameter #32
Name
Ion Temperature Tensor, Error, DBCS
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_temptensor_err_fast
Description

Ion Temperature Tensor Error during this Survey. Column 1 Labels from : ["x","y","z"]. Column 2 Labels from : ["x","y","z"].

Caveats
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
AxisLabel
T_Error
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3 3
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Tensor
Qualifier
Moment
Qualifier
Uncertainty
ParticleQuantity
Temperature
Parameter #33
Name
Ion Heat Flux Vector, DBCS
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_heatq_dbcs_fast
Description

Ion Heat Flux Vector Vector during this Survey, De-spun Body Spacecraft Coordinate System, DBCS

Cadence
PT4.5S
Units
mW/m^2
UnitsConversion
1.0e-3>W/m^2
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Qx_DBCS
Index
1
Element
Name
Qy_DBCS
Index
2
Element
Name
Qz_DBCS
Index
3
ValidMin
-2.5e+06
ValidMax
2.5e+06
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
HeatFlux
Parameter #34
Name
Ion Heat Flux Vector, GSE
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_heatq_gse_fast
Description

Ion Heat Flux Vector Vector during this Survey in Geocentric Solar Ecliptic, GSE, Coordinates

Cadence
PT4.5S
Units
mW/m^2
UnitsConversion
1.0e-3>W/m^2
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Qx_GSE
Index
1
Element
Name
Qy_GSE
Index
2
Element
Name
Qz_GSE
Index
3
ValidMin
-2.5e+06
ValidMax
2.5e+06
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
ParticleQuantity
HeatFlux
Parameter #35
Name
Ion Heat Flux Error Vector
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_heatq_err_fast
Description

Ion Heat Flux Error Vector during this Survey

Caveats
The Error can be applied to Data expressed by using either DBCS or GSE Coordinates
Cadence
PT4.5S
Units
mW/m^2
UnitsConversion
1.0e-3>W/m^2
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Qx_err
Index
1
Element
Name
Qy_err
Index
2
Element
Name
Qz_err
Index
3
ValidMin
0.0
ValidMax
5.0e+06
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Vector
Qualifier
Moment
Qualifier
Uncertainty
ParticleQuantity
HeatFlux
Parameter #36
Name
Ion Sky Map Energy
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energy_fast
Description

Ion Fast Survey Sky Map Energy

Caveats
Geometric Mean of Parity 0 and Parity 1 Energies in the 64-step FPI Energy Table
Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
RenderingHints
AxisLabel
Energy
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
32000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
ParticleQuantity
Energy
Parameter #37
Name
Ion Sky Map Energy, Delta Value
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_energy_delta_fast
Description

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.
Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
RenderingHints
AxisLabel
Delta_Energy
ValueFormat
E12.2
ScaleType
LogScale
Structure
Size
32
ValidMin
0.0
ValidMax
5000.0
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Array
ParticleQuantity
Energy
Parameter #38
Name
Ion Parallel Temperature
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_temppara_fast
Description

Ion Parallel Temperature during this BP

Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
RenderingHints
DisplayType
TimeSeries
AxisLabel
eT_Para
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Parallel
Qualifier
FieldAligned
Qualifier
Scalar
ParticleQuantity
Temperature
Parameter #39
Name
Ion Perpendicular Temperature
Set
Time Series defined by using: EPOCH
ParameterKey
mms4_dis_tempperp_fast
Description

Ion Perpendicular Temperature during this BP

Cadence
PT4.5S
Units
eV
UnitsConversion
1.602176565e-19>J
RenderingHints
DisplayType
TimeSeries
AxisLabel
eT_Perp
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
1.0e+30
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Parallel
Qualifier
Scalar
ParticleQuantity
Temperature