2.3.2
spase://NASA/NumericalData/MMS/2/FastPlasmaInvestigation/DIS/Fast/Level2/PartialMoments/PT4.5S
MMS 2 Fast Plasma Investigation, Dual Ion Spectrometer (FPI, DIS) Partial Distribution Moments, Fast Survey, Level 2 (L2), 4.5 s Data
2021-04-27T15:38:11Z
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 in this Mode. Data are also made available at Survey (4.5 s, etc.) Resolution. Per Mission Design, not all Burst Resolution Data are downlinked, but all Survey Data are downlinked. Planning around Calibration Activities, avoidance of Earth Radiation Belts, etc., when possible, FPI usually operates in Slow Survey (SS) Mode (60 s Resolution) outside of ROI, and then only the 60 s Resolution Survey Data are available. This Product contains Partial Moments that come from performing the Standard Moment Integrals over a limited Portion of Velocity Space. The resulting Quantities are named similarly to their corresponding Standard Moments, but are decorated with 'part' to differentiate. For example, density_part is the Density Moment integrated from a particular Energy Step to Infinity. These Partial Moments are 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.
J.L. Burch, B.L. Giles
spase://SMWG/Person/James.L.Burch
PrincipalInvestigator
spase://SMWG/Person/Barbara.L.Giles
PrincipalInvestigator
spase://SMWG/Person/Robert.E.McGuire
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
MetadataContact
MMS Home Page, GSFC
https://mms.gsfc.nasa.gov/
Magnetospheric Multiscale Home Page, at Goddard Space Flight Center, GSFC
MMS Science Data Center, LASP, UC Boulder
https://lasp.colorado.edu/mms/sdc/public/
Magnetospheric Multiscale Science Data Center, at Laboratory for Atmospheric and Space Physics, LASP, University of Colorado, Boulder
FPI Overview Web Page, NASA
https://www.nasa.gov/mission_pages/mms/spacecraft/mms-instruments.html#fpi
Overview Web Page for the Fast Plasma Investigation, FPI, at NASA
spase://VSPO/NumericalData/MMS/2/FastPlasmaInvestigation/DIS/Fast/Level2/PartialMoments/PT4.5S
spase://SMWG/Repository/NASA/GSFC/SPDF
Online
Open
FTPS from SPDF (not with most browsers)
ftps://spdf.gsfc.nasa.gov/pub/data/mms/mms2/fpi/fast/l2/dis-partmoms/
Access to Data in CDF Format via ftp from SPDF
HTTPS from SPDF
https://spdf.gsfc.nasa.gov/pub/data/mms/mms2/fpi/fast/l2/dis-partmoms/
Access to Data in CDF Format via http from SPDF
CDAWeb
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=MMS2_FPI_FAST_L2_DIS-PARTMOMS&index=sp_phys
MMS2_FPI_FAST_L2_DIS-PARTMOMS
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
CDF
None
J.L. Burch, B.L. Giles. Please acknowledge the Data Providers and CDAWeb when using these Data.
spase://SMWG/Repository/NASA/GSFC/SPDF
Online
Open
CDAWeb HAPI Server
https://cdaweb.gsfc.nasa.gov/hapi
MMS2_FPI_FAST_L2_DIS-PARTMOMS
Web Service to this product using the HAPI interface.
CSV
J.L. Burch, B.L. Giles. Please acknowledge the Data Providers and CDAWeb when using these Data.
spase://SMWG/Repository/UCOLO/LASP/MMS_SDC
Online
Open
HTTP access to files at the MMS Science Data Center, SDC, at the Laboratory for Atmospheric and Space Physics, LASP, University of Colorado, Boulder
https://lasp.colorado.edu/mms/sdc/public/data/
Access to MMS Data in CDF Format via http from the MMS SDC
CDF
None
J.L. Burch, B.L. Giles. Please acknowledge the Data Providers and the MMS SDC when using these Data.
Calibrated
spase://SMWG/Instrument/MMS/2/FIELDS/FGM
spase://SMWG/Instrument/MMS/2/FastPlasmaInstrument/DIS
ElectricField
InstrumentStatus
MagneticField
ThermalPlasma
2015-10-15T04:00:00.000
-P1M
PT4.5S
Earth.Magnetosheath
Earth.Magnetosphere
Earth.Magnetosphere.Magnetotail
Earth.Magnetosphere.Main
Earth.Magnetosphere.RadiationBelt
Earth.NearSurface.EquatorialRegion
Earth.NearSurface.Plasmasphere
Heliosphere.NearEarth
Epoch Time Tags
Epoch
Epoch Time Tags, Terrestrial Time in Nanoseconds since J2000, Reference Position given by the rotating Earth Geoid
Fast Data Begin Time derived from the Survey Packet Time This Parameter exhibits an increasing Monotonic Progression.
PT4.5S
ns
1.0e-9>s
Epoch
LinearScale
1990-01-01T00:00:00.000000000
2100-01-01T00:00:01.000000000
9999-12-31T23:59:59.999999999
Temporal
Epoch plus Var
Epoch_plus_var
Epoch plus Var
PT4.5S
s
1.0>s
F4.2
0.0
4.5
Temporal
Epoch minus Var
Epoch_minus_var
Epoch minus Var
PT4.5S
s
F4.2
0.0
4.5
Temporal
Data Quality Error Flags
Time Series defined by using: EPOCH
mms2_dis_errorflags_fast
Vector of Data Quality Flag Indicators at the Survey Start Time
Value of Zero signifies no Quality Errors. For Non-zero Values: Bit-0=Manually flagged Interval, Bit-1=Overcounting/saturation Effects likely present in Skymap, 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<0.05 cm^-3), Bit-8=Bent Pipe Magnetic Field used instead of Srvy 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
PT4.5S
TimeSeries
errFlags
I10
LinearScale
0
4294967294
4294967295
Scalar
InstrumentMode
Partial Ion Number Density
Time Series defined by using: EPOCH
mms2_dis_numberdensity_part_fast
Partial Ion Number Density during this Survey
PT4.5S
cm^-3
1.0e6>m^-3
TimeSeries
N
E12.2
LogScale
32
0.0
100000.0
-1.0e+31
Ion
Differential
NumberDensity
DBCS Partial Ion Bulk Velocity, Despun Body Coordinates
Time Series defined by using: EPOCH
mms2_dis_bulkv_part_dbcs_fast
Partial Ion Bulk Velocity Vector in the Despun Body Coordinate System, DBCS, during this Survey.
Column 2 Labels from : ["Vx_DBCS","Vy_DBCS","Vz_DBCS"].
PT4.5S
km/s
1.0e3>m/s
Cartesian
SR2
TimeSeries
E12.2
LinearScale
32 3
-1.0e+31
Ion
Differential
Array
Velocity
Partial Ion Bulk Velocity, Geocentric Solar Ecliptic Coordinates
Time Series defined by using: EPOCH
mms2_dis_bulkv_part_gse_fast
Partial Ion Bulk Velocity Vector in Geocentric Solar Ecliptic, GSE, Coordinates during this Survey.
Column 2 Labels from : ["Vx_GSE","Vy_GSE","Vz_GSE"].
PT4.5S
km/s
1.0e3>m/s
Cartesian
GSE
TimeSeries
E12.2
LinearScale
32 3
-1.0e+31
Ion
Differential
Array
Velocity
Partial Ion Pressure Tensor, Despun Body Coordinates
Time Series defined by using: EPOCH
mms2_dis_prestensor_part_dbcs_fast
Partial Ion Pressure Tensor in the Despun Body Coordinate System, DBCS, during this Survey.
Column 2 Labels from : ["x","y","z"].
Column 3 Labels from : ["x","y","z"].
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.
PT4.5S
nPa
1.0e-9>Pa
Cartesian
SR2
TimeSeries
P_DBCS
E12.2
LinearScale
32 3 3
-1.0e+31
Ion
Differential
Tensor
Pressure
Partial Ion Pressure Tensor, Geocentric Solar Ecliptic Coordinates
Time Series defined by using: EPOCH
mms2_dis_prestensor_part_gse_fast
Partial Ion Pressure Tensor in Geocentric Solar Ecliptic, GSE, Coordinates during this Survey.
Column 2 Labels from : ["x","y","z"].
Column 3 Labels from : ["x","y","z"].
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.
PT4.5S
nPa
1.0e-9>Pa
Cartesian
GSE
TimeSeries
P_GSE
E12.2
LinearScale
32 3 3
-1.0e+31
Ion
Differential
Tensor
Pressure
Partial Ion Temperature Tensor, Despun Body Coordinates
Time Series defined by using: EPOCH
mms2_dis_temptensor_part_dbcs_fast
Partial Ion Temperature Tensor in the Despun Body Coordinate System, DBCS, during this Survey.
Column 2 Labels from : ["x","y","z"].
Column 3 Labels from : ["x","y","z"].
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.
PT4.5S
eV
11604.5052>K
Cartesian
SR2
TimeSeries
T_DBCS
E12.2
LinearScale
32 3 3
-1.0e+31
Ion
Differential
Tensor
Temperature
Partial Ion Temperature Tensor, Geocentric Solar Ecliptic Coordinates
Time Series defined by using: EPOCH
mms2_dis_temptensor_part_gse_fast
Partial Ion Temperature Tensor in Geocentric Solar Ecliptic, GSE, Coordinates during this Survey.
Column 2 Labels from : ["x","y","z"].
Column 3 Labels from : ["x","y","z"].
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.
PT4.5S
eV
11604.5052>K
Cartesian
GSE
TimeSeries
T_GSE
E12.2
LinearScale
32 3 3
-1.0e+31
Ion
Differential
Tensor
Temperature
Partial Ion Parallel Temperature
Time Series defined by using: EPOCH
mms2_dis_temppara_part_fast
Partial Ion Parallel Temperature during this Survey
PT4.5S
eV
11604.5052>K
TimeSeries
eT_para
E12.2
LinearScale
32
0.0
1.0e+30
-1.0e+31
Ion
Differential
Parallel
FieldAligned
Temperature
Partial Ion Perpendicular Temperature
Time Series defined by using: EPOCH
mms2_dis_tempperp_part_fast
Partial Ion Perpendicular Temperature during this Survey
PT4.5S
eV
11604.5052>K
TimeSeries
eT_perp
E12.2
LinearScale
32
0.0
1.0e+30
-1.0e+31
Ion
Differential
Perpendicular
Temperature
Recommended Energy Index
Time Series defined by using: EPOCH
mms2_dis_part_index_fast
Recommended Energy Index during this Survey, the Energy Index is an Integer ranging from 0 to 31
PT4.5S
TimeSeries
part_index
I4.4
LinearScale
0
31
65535
Scalar
InstrumentMode
Fast Sky Map Parity 0/1 Energies
Time Series defined by using: EPOCH
mms2_dis_energy_fast
Fast Sky Map Parity 0/1 Energy Table Values
Geometric Mean of Parity 0 and Parity 1 Energies in the 64-Step FPI Energy Table
PT4.5S
eV
1.602176565e-19>J
lowest included energy
E12.2
LogScale
32
0.0
30000.0
-1.0e+31
Ion
Differential
Energy
Fast Sky Map Delta Energies
Time Series defined by using: EPOCH
mms2_dis_energy_delta_fast
Fast Sky Map Delta Energy Table Values
Note that the Deltas are provided to indicate that the FPI is reporting the Energy Bin Centers. These Energy Bin Centers do not necessarily reflect the Energy Bandwidth that is sampled by FPI at a given Energy Step.
PT4.5S
eV
1.602176565e-19>J
delta energy
E12.2
LogScale
32
0.0
5000.0
-1.0e+31
Ion
Differential
Energy
Mean Spacecraft Potential
Time Series defined by using: EPOCH
mms2_dis_scpmean_fast
Mean Spacecraft Potential
PT4.5S
V
TimeSeries
SCP
E12.2
LogScale
0.0
5000.0
-1.0e+31
Magnitude
Scalar
Electric
Magnetic Field Direction Unit Vector, Bhat, Despun Body Coordinates
Time Series defined by using: EPOCH
mms2_dis_bhat_dbcs_fast
Magnetic Field Direction Unit Vector, Bhat, in the Despun Body Coordinate System, DCBS
Magnetic Field Direction Unit Vector specifying the Direction used for Pitch Angle Determination
PT4.5S
Cartesian
SR2
TimeSeries
E12.2
LinearScale
3
x
1
y
2
z
3
-110000.0
110000.0
-1.0e+31
Vector
Magnetic
Despun Body Coordinate System to Geocentric Solar Ecliptic Transformation Matrix
Time Series defined by using: EPOCH
mms2_dis_gse_xform_fast
Despun Body Coordinate System, DBCS, to Geocentric Solar Ecliptic, GSE, Coordinate System Transformation Matrix
Matrix used to transform from DBCS Coordinates to GSE Coordinates
PT4.5S
Cartesian
SR2
TimeSeries
E12.2
LinearScale
3 3
-1.0e+31
Tensor
Positional