HDPWS

DMSP F17 Special Sensors-Ions, Electrons, and Scintillation (SSIES) Thermal Plasma Analysis Package, Level 2 (L2), 1 s Data in CDF Format

(2024). DMSP F17 Special Sensors-Ions, Electrons, and Scintillation (SSIES) Thermal Plasma Analysis Package, Level 2 (L2), 1 s Data in CDF Format [Data set]. NASA Space Physics Data Facility. https://doi.org/10.48322/3skz-xt83 (CiteAs link). Accessed on .

ResourceID
spase://NASA/NumericalData/DMSP_5D-3/F17/SESS/SSIES-3/ThermalPlasma/CDF/PT1S

Description
The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.

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Version:2.6.0

NumericalData

ResourceID
spase://NASA/NumericalData/DMSP_5D-3/F17/SESS/SSIES-3/ThermalPlasma/CDF/PT1S
ResourceHeader
ResourceName
DMSP F17 Special Sensors-Ions, Electrons, and Scintillation (SSIES) Thermal Plasma Analysis Package, Level 2 (L2), 1 s Data in CDF Format
DOI
https://doi.org/10.48322/3skz-xt83
ReleaseDate
2024-05-03 00:00:00.00
RevisionHistory
RevisionEvent
ReleaseDate
2024-05-03 00:00:00.00
Note
Metadata created by ADAPT code (LFB), final editing and DOI minting by AK
Description
The Special Sensors-Ions, Electrons, and Scintillation (SSIES) thermal plasma analysis package is a suite of instruments built by the Center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites. SSIESS includes a Retarding Potential Analyzer (RPA), Ion Drift meter (IDM), scintillation meter, and Langmuir probe.
Acknowledgement
We gratefully acknowledge the University of Texas Dallas, Center for Space Sciences and the US Air Force for providing the DMSP thermal plasma data
PublicationInfo
Authors
Hairston, Marc, R.; Coley, William, R.; Heelis, Roderick, A.; Hanson, William, B.
PublicationDate
2024-01-01 00:00:00
PublishedBy
NASA Space Physics Data Facility
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator
ProjectScientist
InstrumentScientist
TechnicalContact
GeneralContact
spase://SMWG/Person/Marc.R.Hairston
2. ProjectScientist
InstrumentScientist
TechnicalContact
spase://SMWG/Person/William.R.Coley
3. FormerPI
InstrumentScientist
InstrumentLead
ProjectManager
spase://SMWG/Person/Roderick.A.Heelis
4. FormerPI spase://SMWG/Person/William.B.Hanson
5. MetadataContact spase://SMWG/Person/Robert.M.Candey
6. MetadataContact spase://SMWG/Person/Andriy.Koval

InformationURL
InformationURL
Name
DMSP SSIES-3 Documentation
URL
InformationURL
Name
Original HDF files
URL
Description
HDF files used to convert to CDF files at SPDF
InformationURL
Name
Thermal Plasma Plots
URL
Description
Single orbit plots of plasma data
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description
Access to Data in CDF Format via ftps from SPDF
AccessURL
Name
HTTPS from SPDF
URL
Description
Access to Data in CDF Format via https from SPDF
AccessURL
Name
CDAWeb
URL
ProductKey
DMSP-F17_SSIES-3_THERMAL-PLASMA
Description
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/dmsp/dmspf17/ssies/ssies-3rl/thermal-plasma-cdf/$Y
AccessFilenameTemplate
dmsp-f17_ssies-3_thermal-plasma_$Y$m$d$H$M_$v.cdf
Acknowledgement
We gratefully acknowledge the University of Texas Dallas, Center for Space Sciences and the US Air Force for providing the DMSP thermal plasma data
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
Style
WebService
ProductKey
DMSP-F17_SSIES-3_THERMAL-PLASMA
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
We gratefully acknowledge the University of Texas Dallas, Center for Space Sciences and the US Air Force for providing the DMSP thermal plasma data
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
DMSP-F17_SSIES-3_THERMAL-PLASMA
Description
Web Service to this product using the HAPI interface.
Format
CSV
ProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
ThermalPlasma
MeasurementType
IonComposition
TemporalDescription
TimeSpan
StartDate
2006-11-08 17:33:48
StopDate
2014-12-31 22:55:30
Cadence
PT1S
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Polar
ObservedRegion
Earth.NearSurface
ObservedRegion
Earth.NearSurface.AuroralRegion
ObservedRegion
Earth.NearSurface.EquatorialRegion
ObservedRegion
Earth.NearSurface.Ionosphere
ObservedRegion
Earth.NearSurface.PolarCap
Parameter #1
Name
Epoch
ParameterKey
Epoch
Description
Default time
Caveats
This Parameter exhibits an increasing Monotonic Progression
RenderingHints
AxisLabel
Epoch
ScaleType
LinearScale
ValidMin
01-Jan-1990 00:00:00.000
ValidMax
31-Dec-2029 23:59:59.999
FillValue
31-Dec-9999 23:59:59.999
Support
SupportQuantity
Temporal
Parameter #2
Name
vx
Set
Time series defined by using: Epoch
ParameterKey
vx
Description
Vx - median filtered and smoothed ion flow in the ram direction
Caveats
median filtered and smoothed ion flow in the ram direction from the fits to the RPA curve
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
vx
ValueFormat
F8.0
ValidMin
-2000.0
ValidMax
2000.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.I
Qualifier
Median
ParticleQuantity
FlowVelocity
Parameter #3
Name
quality flag for Vx data
Set
Time series defined by using: Epoch
ParameterKey
vxqual
Description
"Vx quality flag:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
quality flag for Vx data
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
Qualifier
Component.I
SupportQuantity
DataQuality
Parameter #4
Name
vx rms
Set
Time series defined by using: Epoch
ParameterKey
vxrms
Description
Vx root mean square of the RPA fit
Caveats
root mean square of the fit to the RPA curve giving an indication of the quality of the RPA data for this sweep
Cadence
PT1S
RenderingHints
AxisLabel
vx rms
ValueFormat
F10.2
ScaleMin
0.0
ScaleMax
99.0
ValidMin
0.0
ValidMax
999.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.I
Qualifier
Fit
Qualifier
StandardDeviation
ParticleQuantity
FlowVelocity
Parameter #5
Name
Vx flow
Set
Time series defined by using: Epoch
ParameterKey
vxraw
Description
Vx - original unfiltered Vx flow
Caveats
the unfiltered Vx flow values calculated by the RPA fitting routine
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
Vx flow
ValueFormat
F8.0
ValidMin
-2000.0
ValidMax
2000.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.I
ParticleQuantity
FlowVelocity
Parameter #6
Name
vy
Set
Time series defined by using: Epoch
ParameterKey
vy
Description
Vy - ion flow in the horizontal crosstrack direction
Caveats
crosstrack horizontal ion flow from IDM, positive is in the sunward direction regardless of the orientation of the orbit, data taken in two modes: normal and slow (see nmbpts)
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
vy
ValueFormat
F8.0
ValidMin
-2000.0
ValidMax
2000.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.J
ParticleQuantity
FlowVelocity
Parameter #7
Name
quality flag for Vy data
Set
Time series defined by using: Epoch
ParameterKey
vyqual
Description
"Quality flag for Vy data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain 6-good (F17) 7-fair (F17) 8-caution (F17) 9-caution (sun glint or high-energy particles)
Cadence
PT1S
RenderingHints
AxisLabel
quality flag for Vy data
ValueFormat
I2
ValidMin
1
ValidMax
9
Support
Qualifier
Component.J
SupportQuantity
DataQuality
Parameter #8
Name
vy rms
Set
Time series defined by using: Epoch
ParameterKey
vyrms
Description
Standard deviation of the Vy flow
Caveats
standard deviation of the six Vy samples taken per second in the normal mode, fill data in slow mode
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
vy rms
ValueFormat
F10.2
ValidMin
0.0
ValidMax
2800.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.J
Qualifier
StandardDeviation
ParticleQuantity
FlowVelocity
Parameter #9
Name
roughness Vy
Set
Time series defined by using: Epoch
ParameterKey
dmhrough
Description
Roughness parameter of Vy
Caveats
roughness parameter of Vy defined as (delta Vy / averaged Vy)
Cadence
PT1S
RenderingHints
AxisLabel
roughness Vy
ValueFormat
F11.3
ValidMin
0.0
ValidMax
1.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.J
Qualifier
Ratio
ParticleQuantity
FlowVelocity
Parameter #10
Name
vz
Set
Time series defined by using: Epoch
ParameterKey
vz
Description
Vz - ion flow in the vertical crosstrack direction
Caveats
crosstrack vertical ion flow from IDM, positive is in the upward direction, data taken in two modes: normal and slow (see nmbpts)
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
vz
ValueFormat
F8.0
ValidMin
-2000.0
ValidMax
2000.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.K
ParticleQuantity
FlowVelocity
Parameter #11
Name
quality flag for Vz data
Set
Time series defined by using: Epoch
ParameterKey
vzqual
Description
"Quality flag for Vz data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain 6-good (F17) 7-fair (F17) 8-caution (F17) 9-caution (sun glint or high-energy particles)
Cadence
PT1S
RenderingHints
AxisLabel
quality flag for Vz data
ValueFormat
I2
ValidMin
1
ValidMax
9
Support
Qualifier
Component.K
SupportQuantity
DataQuality
Parameter #12
Name
stdev vz rms
Set
Time series defined by using: Epoch
ParameterKey
vzrms
Description
Standard deviation of the Vz flow
Caveats
standard deviation of the six Vz samples taken per second in the normal mode, fill data in slow mode
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
stdev vz rms
ValueFormat
F10.2
ValidMin
0.0
ValidMax
2800.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.K
Qualifier
StandardDeviation
ParticleQuantity
FlowVelocity
Parameter #13
Name
roughness Vz
Set
Time series defined by using: Epoch
ParameterKey
dmvrough
Description
Roughness parameter of Vz (delta Vz / averaged Vz)
Caveats
roughness parameter of Vy defined as (delta Vy / averaged Vy)
Cadence
PT1S
RenderingHints
AxisLabel
roughness Vz
ValueFormat
F11.3
ValidMin
0.0
ValidMax
1.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Component.K
Qualifier
Ratio
ParticleQuantity
FlowVelocity
Parameter #14
Name
ion temperature
Set
Time series defined by using: Epoch
ParameterKey
temp
Description
Ion temperature
Caveats
temperature of the ions in the plasma calculated from the fit to the RPA curve
Cadence
PT1S
Units
°K
RenderingHints
AxisLabel
ion temperature
ValueFormat
F8.0
ScaleMin
500.0
ScaleMax
5000.0
ValidMin
500.0
ValidMax
20000.0
FillValue
-999999.0
Particle
ParticleType
Ion
ParticleQuantity
Temperature
Parameter #15
Name
Quality flag for the ion temperature
Set
Time series defined by using: Epoch
ParameterKey
tempqual
Description
"Quality flag for the ion temperature:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
Quality flag for the ion temperature
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
SupportQuantity
DataQuality
Parameter #16
Name
electron temperature
Set
Time series defined by using: Epoch
ParameterKey
te
Description
Electron temperature
Caveats
the electron temperature based on an onboard calculation of the Langmuir probe sweep which occurs once every 4 s
Cadence
PT1S
Units
°K
RenderingHints
AxisLabel
electron temperature
ValueFormat
F8.0
ValidMin
500.0
ValidMax
10000.0
FillValue
-999999.0
Particle
ParticleType
Electron
ParticleQuantity
Temperature
Parameter #17
Name
ion density
Set
Time series defined by using: Epoch
ParameterKey
dens
Description
Ni calculated from the RPA
Caveats
Ion density of the plasma calculated from the fit to the RPA curve
Cadence
PT1S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
AxisLabel
ion density
ValueFormat
F8.0
ScaleMin
200.0
ScaleMax
1.0e+08
ValidMin
0.0
ValidMax
1.0e+08
FillValue
-999999.0
Particle
ParticleType
Ion
ParticleQuantity
NumberDensity
Parameter #18
Name
density quality flag
Set
Time series defined by using: Epoch
ParameterKey
densqual
Description
"Quality flag for the ion density:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
density quality flag
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
SupportQuantity
DataQuality
Parameter #19
Name
ion density scint meter
Set
Time series defined by using: Epoch
ParameterKey
ductdens
Description
Ni from scintillation meter
Caveats
the average of the 24 Hz samples of the ion density by the scintillation meter, because of its large aperture this is considered the best meaure of the ion density
Cadence
PT1S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
AxisLabel
ion density scint meter
ValueFormat
F8.0
ScaleMin
200.0
ScaleMax
1.0e+08
ValidMin
0.0
ValidMax
1.0e+08
FillValue
-999999.0
Particle
ParticleType
Ion
ParticleQuantity
NumberDensity
Parameter #20
Name
roughness SM den
Set
Time series defined by using: Epoch
ParameterKey
ductdensrough
Description
Roughness parameter of SM density
Caveats
roughness parameter of scintillation meter ion density defined as (delta Ni/ averaged Ni)
Cadence
PT1S
RenderingHints
AxisLabel
roughness SM den
ValueFormat
F11.3
ValidMin
0.0
ValidMax
1.0
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #21
Name
ion density RPA 0 volts
Set
Time series defined by using: Epoch
ParameterKey
dens0v
Description
Ni measured from the RPA at 0 volts
Caveats
during each RPA sweep there is a point where the repeller voltage is 0 V so all the ions reach the collector, this is the ion density based on that measurement
Cadence
PT1S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
AxisLabel
ion density RPA 0 volts
ValueFormat
F8.0
ValidMin
0.0
ValidMax
1.0e+08
FillValue
-999999.0
Particle
ParticleType
Ion
ParticleQuantity
NumberDensity
Parameter #22
Name
ion density IDM
Set
Time series defined by using: Epoch
ParameterKey
dmdens
Description
Ni from the IDM
Caveats
the ion density based on the collector current in the IDM, because some or all of the light ions are excluded this density should always be equal to or less than the other ion densities
Cadence
PT1S
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
AxisLabel
ion density IDM
ValueFormat
F8.0
ScaleMin
200.0
ScaleMax
1.0e+08
ValidMin
0.0
ValidMax
1.0e+08
FillValue
-999999.0
Particle
ParticleType
Ion
ParticleQuantity
NumberDensity
Parameter #23
Name
frac H+ ions in plasma
Set
Time series defined by using: Epoch
ParameterKey
frach
Description
Fractional amount of H+ ions in plasma
Caveats
fractional amount of the plasma that is H+ based on the fitting of the RPA curve, because of uncertainties the value can exceed 1.0; disregard > 1.05 and negative
Cadence
PT1S
RenderingHints
AxisLabel
frac H+ ions in plasma
ValueFormat
F10.2
ScaleMin
0.0
ScaleMax
1.05
ValidMin
-0.1
ValidMax
1.05
FillValue
-999999.0
Particle
ParticleType
Proton
Qualifier
Ratio
ParticleQuantity
NumberDensity
AtomicNumber
1
Parameter #24
Name
frac H+ quality flag
Set
Time series defined by using: Epoch
ParameterKey
frachqual
Description
"Quality flag for fractional H+:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
flag H+ quality flag
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
SupportQuantity
DataQuality
Parameter #25
Name
frac He+ ions in plasma
Set
Time series defined by using: Epoch
ParameterKey
frache
Description
Fractional amount of He+ ions in plasma
Caveats
fractional amount of the plasma that is He+ based on the fitting of the RPA curve, because of uncertainties the value can exceed 1.0; disregard > 1.05 and negative
Cadence
PT1S
RenderingHints
AxisLabel
frac He+ ions in plasma
ValueFormat
F10.2
ScaleMin
0.0
ScaleMax
1.05
ValidMin
-0.1
ValidMax
1.05
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #26
Name
frac He+ quality flag
Set
Time series defined by using: Epoch
ParameterKey
frachequal
Description
"Quality flag for fractional He+:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
flag He+ quality flag
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
SupportQuantity
DataQuality
Parameter #27
Name
frac O+ ions in plasma
Set
Time series defined by using: Epoch
ParameterKey
fraco
Description
Fractional amount of O+ ions in plasma
Caveats
fractional amount of the plasma that is O+ based on the fitting of the RPA curve, because of uncertainties the value can exceed 1.0; disregard > 1.05 and negative
Cadence
PT1S
RenderingHints
AxisLabel
frac O+ ions in plasma
ValueFormat
F10.2
ScaleMin
0.0
ScaleMax
1.05
ValidMin
-0.1
ValidMax
1.05
FillValue
-999999.0
Particle
ParticleType
Ion
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #28
Name
frac O+ quality flag
Set
Time series defined by using: Epoch
ParameterKey
fracoqual
Description
"Quality flag for fractional O+:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
flag O+ quality flag
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
SupportQuantity
DataQuality
Parameter #29
Name
high energy particles
Set
Time series defined by using: Epoch
ParameterKey
ebm
Description
Electron background monitor - high energy particle currents detected by the RPA
Caveats
once every 2 s the RPA repeller voltage is set so high that only high energy electrons or ions reach the collector. A large current indicates high-energy particles or photo-electron production (a sun-glint).
Cadence
PT1S
Units
A
RenderingHints
AxisLabel
high energy particles
ValueFormat
F11.3
ValidMin
-2.0e+09
ValidMax
2.0e+09
FillValue
-999999.0
Particle
ParticleType
Electron
ParticleType
Ion
ParticleQuantity
Current
Parameter #30
Name
quality flag for RPA data
Set
Time series defined by using: Epoch
ParameterKey
corrpaqual
Description
"Overall quality flag for RPA data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain
Cadence
PT1S
RenderingHints
AxisLabel
quality flag for RPA data
ValueFormat
I2
ValidMin
1
ValidMax
5
Support
SupportQuantity
DataQuality
Parameter #31
Name
quality flag for RPA data
Set
Time series defined by using: Epoch
ParameterKey
rpainfo
Description
"Flag for RPA sweep direction:retarding potential: 1-increasing,2-decreasing [READ QUALITY FLAG Document]"
Caveats
1-retarding potential increasing 2-retarding potential decreasing
Cadence
PT1S
RenderingHints
AxisLabel
quality flag for RPA data
ValueFormat
I2
ValidMin
1
ValidMax
2
Support
SupportQuantity
DataQuality
Parameter #32
Name
geographic latitude
Set
Time series defined by using: Epoch
ParameterKey
glat
Description
Geographical latitude
Caveats
geographic latitude of s/c
Cadence
PT1S
Units
°
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
AxisLabel
geographic latitude
ValueFormat
F6.2
ValidMin
-90.0
ValidMax
90.0
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #33
Name
geographic longitude
Set
Time series defined by using: Epoch
ParameterKey
glon
Description
Geographic east longitude
Caveats
geographic east longitude of s/c
Cadence
PT1S
Units
°
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
AxisLabel
geographic longitude
ValueFormat
F7.2
ValidMin
0.0
ValidMax
359.99
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #34
Name
magnetic latitude
Set
Time series defined by using: Epoch
ParameterKey
mlat
Description
"Magnetic latitude, mapped to 120 km"
Caveats
magnetic latitude of field line at s/c mapped to 120 km
Cadence
PT1S
Units
°
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
MAG
RenderingHints
DisplayType
TimeSeries
AxisLabel
magnetic latitude
ValueFormat
F6.2
ValidMin
-90.0
ValidMax
90.0
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #35
Name
magnetic local time
Set
Time series defined by using: Epoch
ParameterKey
mlt
Description
"Magnetic local time, mapped to 120 km"
Caveats
magnetic local time of field line at s/c mapped to 120 km
Cadence
PT1S
Units
hr
UnitsConversion
60>s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
MAG
RenderingHints
DisplayType
TimeSeries
AxisLabel
magnetic local time
ValueFormat
F6.2
ValidMin
0.0
ValidMax
23.99
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #36
Name
solar zenith angle
Set
Time series defined by using: Epoch
ParameterKey
sza
Description
Solar zenith angle
Caveats
angle between the sun-earth line and the s/c-center of earth line
Cadence
PT1S
Units
°
RenderingHints
DisplayType
TimeSeries
AxisLabel
solar zenith angle
ValueFormat
F7.2
ValidMin
0.0
ValidMax
180.0
Support
SupportQuantity
Positional
Parameter #37
Name
altitude
Set
Time series defined by using: Epoch
ParameterKey
alt
Description
Altitude
Caveats
altitude of the s/c above earth’s surface
Cadence
PT1S
Units
km
UnitsConversion
1.0e3>m
RenderingHints
DisplayType
TimeSeries
AxisLabel
altitude
ValueFormat
F7.2
ValidMin
820.0
ValidMax
870.0
Support
SupportQuantity
Positional
Parameter #38
Name
#pts vy-vz
Set
Time series defined by using: Epoch
ParameterKey
nmbot
Description
"Number of data points in the Vy - Vz average:1-slow mode,6-normal mode"
Caveats
the IDM operates in two modes: normal mode takes six horizontal and six vertical samples per second, slow mode is for low density conditions where only one sample is taken each second and alternates between directions
Cadence
PT1S
RenderingHints
AxisLabel
#pts vy-vz
ValueFormat
F8.0
ValidMin
1.0
ValidMax
10.0
FillValue
-999999.0
Support
SupportQuantity
Other
Parameter #39
Name
overall quality flag for the IDM data
Set
Time series defined by using: Epoch
ParameterKey
idmqual
Description
"Overall quality flag for the IDM data:1,6-good;2,7-fair;else warn [READ QUALITY FLAG Document]"
Caveats
1-good 2-fair 3-caution 4-bad 5-uncertain 6-good (F17) 7-fair (F17) 8-caution (F17) 9-caution (sun glint or high-energy particles)
Cadence
PT1S
RenderingHints
AxisLabel
overall quality flag for the IDM data
ValueFormat
I2
ValidMin
1
ValidMax
9
Support
SupportQuantity
DataQuality
Parameter #40
Name
spacecraft velocity
Set
Time series defined by using: Epoch
ParameterKey
scvel
Description
Spacecraft velocity
Caveats
orbital velocity of the spacecraft
Cadence
PT1S
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
AxisLabel
spacecraft velocity
ValueFormat
F9.1
ValidMin
-7400.0
ValidMax
7500.0
FillValue
-999999.0
Support
Qualifier
Magnitude
SupportQuantity
Velocity
Parameter #41
Name
rpaground
Set
Time series defined by using: Epoch
ParameterKey
rpaground
Description
Potential difference between SSIES instruments and spacecraft ground
Caveats
the DMSP spacecraft charges negative relative to the plasma ground so SSIES is electrically insolated and driven positive relative to spacecraft ground to keep the instrument near the plasma ground
Cadence
PT1S
Units
°K
RenderingHints
AxisLabel
rpaground
ValueFormat
F8.0
ValidMin
500.0
ValidMax
10000.0
FillValue
-999999.0
Field
FieldQuantity
Electric
Parameter #42
Name
potential
Set
Time series defined by using: Epoch
ParameterKey
pot
Description
Potential of the SSIES instruments relative to the plasma ground
Caveats
all the SSIES instruments are held near the plasma ground potential, nominally about -1 V relative to the plasma, this value is calculated from the RPA curve fit, shown as \“SC Potential\” on the plots
Cadence
PT1S
Units
V
RenderingHints
AxisLabel
potential
ValueFormat
F10.2
ScaleMin
-2.0
ScaleMax
1.0
ValidMin
-3.0
ValidMax
2.0
FillValue
-999999.0
Field
FieldQuantity
Electric
Parameter #43
Name
bx
Set
Time series defined by using: Epoch
ParameterKey
bx
Description
North component of Earths magnetic field (IGRF)
Caveats
northward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model
Cadence
PT1S
Units
nT
UnitsConversion
1.0e-9>T
RenderingHints
AxisLabel
bx
ValueFormat
F9.1
ValidMin
-5000.0
ValidMax
5000.0
FillValue
-999999.0
Field
Qualifier
Component.I
FieldQuantity
Magnetic
Parameter #44
Name
by
Set
Time series defined by using: Epoch
ParameterKey
by
Description
East component of Earths magnetic field (IGRF)
Caveats
eastward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model
Cadence
PT1S
Units
nT
UnitsConversion
1.0e-9>T
RenderingHints
AxisLabel
by
ValueFormat
F9.1
ValidMin
-5000.0
ValidMax
5000.0
FillValue
-999999.0
Field
Qualifier
Component.J
FieldQuantity
Magnetic
Parameter #45
Name
bz
Set
Time series defined by using: Epoch
ParameterKey
bz
Description
Vertical downward component of Earths magnetic field (IGRF)
Caveats
vertical downward component of the Earths magnetic field at the spacecrafts location calculated by the IGRF model
Cadence
PT1S
Units
nT
UnitsConversion
1.0e-9>T
RenderingHints
AxisLabel
bz
ValueFormat
F9.1
ValidMin
-5000.0
ValidMax
5000.0
FillValue
-999999.0
Field
Qualifier
Component.K
FieldQuantity
Magnetic
Parameter #46
Name
corotation vel ram
Set
Time series defined by using: Epoch
ParameterKey
corvelx
Description
Corotation velocity of ionosphere in the ram direction
Caveats
the ram component (x) of the corotation speed of the ionosphere at the spacecrafts location
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
corotation vel ram
ValueFormat
F9.1
ValidMin
-100.0
ValidMax
0.0
FillValue
-999999.0
Support
Qualifier
Component.I
SupportQuantity
Velocity
Parameter #47
Name
corotation vel crosstrack
Set
Time series defined by using: Epoch
ParameterKey
corvely
Description
Corotation velocity of ionosphere in the horizontal crosstrack direction
Caveats
the crosstrack horizontal component (y) of the corotation speed of the ionosphere at the spacecrafts location
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
corotation vel crosstrack
ValueFormat
F9.1
ValidMin
-600.0
ValidMax
600.0
FillValue
-999999.0
Support
Qualifier
Component.J
SupportQuantity
Velocity
Parameter #48
Name
corotation vel vertical
Set
Time series defined by using: Epoch
ParameterKey
corvelz
Description
Corotation velocity of ionosphere in the vertical direction
Caveats
the crosstrack vertical component (z) of the corotation speed of the ionosphere at the spacecrafts location, since DMSP is in a circular orbit, this value is zero
Cadence
PT1S
Units
m/s
RenderingHints
AxisLabel
corotation vel vertical
ValueFormat
F9.1
ValidMin
0.0
ValidMax
1.0
FillValue
-999999.0
Support
Qualifier
Component.K
SupportQuantity
Velocity