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Geotail CPI Plasma Key Parameters (64s)

ResourceID
spase://JAXA/NumericalData/Geotail/CPI/KeyParameter/PT64S

Description

A combination of plasma key parameters from the Geotail CPI analyzers.

        The CPI-SW Solar Wind Analyzer provides

     * Ion number density
     * Average proton energy
     * Bulk flow velocity

        The CPI-HP Hot Plasma Analyzer provides

     * Ion number density
     * Average proton energy
     * Average electron energy
     * Bulk flow velocity
     * Plasma pressure

        The CPI-IC Ion Composition Analyzer provides principal Species

     * H+
     * He++
     * He+
     * O+

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Details

Version:2.3.0

NumericalData

ResourceID
spase://JAXA/NumericalData/Geotail/CPI/KeyParameter/PT64S
ResourceHeader
ResourceName
Geotail CPI Plasma Key Parameters (64s)
ReleaseDate
2021-04-27 17:52:35Z
Description

A combination of plasma key parameters from the Geotail CPI analyzers.

        The CPI-SW Solar Wind Analyzer provides

     * Ion number density
     * Average proton energy
     * Bulk flow velocity

        The CPI-HP Hot Plasma Analyzer provides

     * Ion number density
     * Average proton energy
     * Average electron energy
     * Bulk flow velocity
     * Plasma pressure

        The CPI-IC Ion Composition Analyzer provides principal Species

     * H+
     * He++
     * He+
     * O+
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Louis.A.Frank
2.MetadataContactspase://SMWG/Person/Jan.Merka
InformationURL
Name
CPI Survey Plots
URL
http://www-pi.physics.uiowa.edu/cpi/
Description

Geotail CPI description and survey plots.

PriorIDs
spase://VMO/NumericalData/Geotail/CPI/kp_PT64S
spase://VSPO/NumericalData/Geotail/CPI/KeyParameter/PT64S
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/geotail/cpi/cpi_k0/
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/geotail/cpi/cpi_k0/
Description

In CDF via HTTP from SPDF

AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=GE_K0_CPI&index=sp_phys
ProductKey
GE_K0_CPI
Format
CDF
Encoding
None
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
GE_K0_CPI
Description

Web Service to this product using the HAPI interface.

Format
CSV
InstrumentIDs
spase://SMWG/Instrument/Geotail/CPI/HPA
spase://SMWG/Instrument/Geotail/CPI/SWA
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1992-09-08 07:30:40
RelativeStopDate
-P2D
Cadence
PT64S
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Magnetotail
Caveats
The CPI solar wind ion analyzer is an E/Q analyzer and the initial distribution functions were calculated assuming that the plasma is H+. Care must be taken when multi-component plasmas are present. If He++ is present and is flowing with the same speed as the H+ component, it will contribute to the distribution function at twice the velocity (four times the energy) of the H+. To facilitate the automated processing of the data the integral was evaluated between vmin = 171 km/s and vmax = 1.35 × u . The resulting temperatures produce excellent fits to the observations. When He++ is present the distribution functions are consistent with an He++ temperature, THe++ = 4 × TH+, i.e., the H+ and He++ have similar thermal velocities.
Parameter #1
Name
Time
ParameterKey
Epoch
Description

Time in milliseconds, centered, since CDF Epoch

Units
ms
UnitsConversion
1e-3>s
ValidMin
08-Sep-1992 00:00:00.000
ValidMax
31-Dec-2020 20:00:00.000
FillValue
-1.0E31
Support
SupportQuantity
Temporal
Parameter #2
Name
Time
ParameterKey
Time_PB5
Description

Time, centered, in GSFC PB5 format (yr, day, ms). Jan 1 = Day 1.

Structure
Size
3
Element
Name
Year
Index
1
Units
year
ValidMin
1992
ValidMax
2020
FillValue
-2147483648
Element
Name
Day of year
Index
2
Units
day
ValidMin
1
ValidMax
366
FillValue
-2147483648
Element
Name
Elapsed millisecond of day
Qualifier
Component.I
Index
3
Units
ms
ValidMin
0
ValidMax
86400000
FillValue
-2147483648
Support
SupportQuantity
Temporal
Parameter #3
Name
Ion Number Density (CPI/SWA)
ParameterKey
SW_P_Den
Description

Ion number density (ions 144-7000 eV, 60x60 deg FOV, CPI/SWA), scalar

Caveats
From 5 deg angular bins.
Units
cm^-3
UnitsConversion
1e6>m^-3
RenderingHints
AxisLabel
n(SWA)
ValueFormat
F8.3
ValidMin
0.01
ValidMax
1000.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
Qualifier
Scalar
ParticleQuantity
NumberDensity
EnergyRange
Low
144
High
7000
Units
eV
AzimuthalAngleRange
Low
-56.25
High
56.25
Units
deg
PolarAngleRange
Low
60
High
120
Units
deg
Parameter #4
Name
Ion Average Energy (CPI/SWA)
ParameterKey
SW_P_AVGE
Description

Ion average energy (ions 144-7000 eV, in the spacecraft frame of reference, CPI/SWA), scalar

Units
eV
UnitsConversion
1.60217653e-19>J
RenderingHints
ValueFormat
F7.0
ValidMin
100.0
ValidMax
8000.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Average
Qualifier
Scalar
ParticleQuantity
Energy
EnergyRange
Low
144
High
7000
Units
eV
AzimuthalAngleRange
Low
-56.25
High
56.25
Units
deg
PolarAngleRange
Low
60
High
120
Units
deg
Parameter #5
Name
Ion bulk Flow Velocity (CPI/SWA)
ParameterKey
SW_V
Description

Ion bulk flow velocity in GSE coordinates (ions 144-7000 eV, 60x60 deg FOV, CPI/SWA)

Caveats
From 5 deg angular bins
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
ValueFormat
F7.0
Structure
Size
3
Element
Name
Vx
Qualifier
Component.I
Index
1
ValidMin
-1400.0
ValidMax
1400.0
FillValue
-1.0E31
Element
Name
Vy
Qualifier
Component.J
Index
2
ValidMin
-1400.0
ValidMax
1400.0
FillValue
-1.0E31
Element
Name
Vz
Qualifier
Component.K
Index
3
ValidMin
-1400.0
ValidMax
1400.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
Qualifier
Vector
ParticleQuantity
FlowVelocity
EnergyRange
Low
144
High
7000
Units
eV
AzimuthalAngleRange
Low
-56.25
High
56.25
Units
deg
PolarAngleRange
Low
60
High
120
Units
deg
Parameter #6
Name
CPI/SWA Data Quality Flag
ParameterKey
Quality_SW
Description

CPI/SWA Data Quality Flag (0: adequate; 100: poor, more problems), scalar

ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Support
SupportQuantity
Other
Parameter #7
Name
CPI Post Gap Flag
ParameterKey
GAP_FLAG
Description

CPI Post Gap Flag, scalar

         * 0: no gap immediately prior to this record;
         * 1: gap due to instrument mode;
         * 2: gap due to missing SIRIUS data;
         * 3: gap due to noisy SIRIUS data;
         * 20: gap due to missing Minor Frame(s))
ValidMin
0
ValidMax
20
FillValue
-2147483648
Support
SupportQuantity
Other
Parameter #8
Name
Ion Number Density (CPI/HPA)
ParameterKey
HP_P_Den
Description

Ion number density (ions 50-50000 eV, equatorial plane, CPI/HPA), scalar

Caveats
The ions are assumed to be protons
Units
cm^-3
UnitsConversion
1e6>m^-3
RenderingHints
AxisLabel
n(HPA)
ValueFormat
F8.3
ValidMin
0.01
ValidMax
1000.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
Qualifier
Scalar
ParticleQuantity
NumberDensity
Parameter #9
Name
Ion Average Energy (CPI/HPA)
ParameterKey
HP_P_AVGE
Description

Ion average energy (ions 50-50000 eV, equatorial plane, CPI/HPA), scalar

Units
eV
UnitsConversion
1.60217653e-19>J
RenderingHints
ValueFormat
F7.0
ValidMin
50.0
ValidMax
50000.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Average
Qualifier
Scalar
ParticleQuantity
Energy
Parameter #10
Name
Ion Bulk Flow Velocity (CPI/HPA)
ParameterKey
HP_V
Description

Bulk ion flow velocity, approximate GSE X-Y components (ions 50-50000 eV, CPI/HPA)

Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
RenderingHints
ValueFormat
F7.0
Structure
Size
2
Element
Name
Vx
Qualifier
Component.I
Index
1
ValidMin
-4000.0
ValidMax
4000.0
FillValue
-1.0E31
Element
Name
Vy
Qualifier
Component.J
Index
2
ValidMin
-4000.0
ValidMax
4000.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
Qualifier
Vector
ParticleQuantity
FlowVelocity
Parameter #11
Name
Electron Average Energy (CPI/HPA)
ParameterKey
HP_E_AVGE
Description

Average electron energy (electrons 50-50000 eV, CPI/HPA), scalar

Units
eV
UnitsConversion
1.60217653e-19>J
RenderingHints
ValueFormat
F7.0
ValidMin
50.0
ValidMax
50000.0
FillValue
-1.0E31
Particle
ParticleType
Electron
Qualifier
Average
Qualifier
Scalar
ParticleQuantity
Energy
Parameter #12
Name
Plasma Pressure (CPI/HPA)
ParameterKey
W
Description

Plasma pressure (50-50000 eV, CPI/HPA), scalar

Units
Pa
ValidMin
1.0E-15
ValidMax
1.0E-5
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Scalar
ParticleQuantity
Pressure
Parameter #13
Name
CPI/HPA Data Quality Flag
ParameterKey
Quality_HP
Description

CPI/HPA data quality flag (0: adequate; 100: poor, more problems), scalar

ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Support
SupportQuantity
Other
Parameter #14
Name
CPI/ICA Data Quality Flag
ParameterKey
Quality_IC
Description

CPI/ICA data quality flag (0: adequate; 100: poor, more problems), scalar

ValidMin
0.0
ValidMax
100.0
FillValue
-1.0E31
Support
SupportQuantity
Other
Parameter #15
Name
H+ Flag (CPI/ICA)
ParameterKey
H_P_FLAG
Description

H+ flag: non-zero value indicates presence of singly ionized hydrogen, (CPI/ICA), scalar

ValidMin
0
ValidMax
99
FillValue
-128
Support
SupportQuantity
Other
Parameter #16
Name
He++ Flag (CPI/ICA)
ParameterKey
HE_PP_FLAG
Description

He++ flag: non-zero value indicates presence of doubly ionized helium, (CPI/ICA)), scalar

ValidMin
0
ValidMax
99
FillValue
-128
Support
SupportQuantity
Other
Parameter #17
Name
He+ Flag
ParameterKey
HE_P_FLAG
Description

He+ flag: non-zero value indicates presence of singly ionized helium, (CPI/ICA), scalar

ValidMin
0
ValidMax
99
FillValue
-128
Support
SupportQuantity
Other
Parameter #18
Name
O+ Flag (CPI/ICA)
ParameterKey
O_P_FLAG
Description

O+ flag: non-zero value indicates presence of singly ionized atomic oxygen, (CPI/ICA), scalar

ValidMin
0
ValidMax
99
FillValue
-128
Support
SupportQuantity
Other