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Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
DMSP F16 Special Sensor Magnetometer, SESS/SSM-Boom, Magnetic Field Measurements taken at 850 km, 1 s Data
var authors='Redmon, Robert, J.';
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(2023).
DMSP F16 Special Sensor Magnetometer, SESS/SSM-Boom, Magnetic Field Measurements taken at 850 km, 1 s Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/bh8f-yy31. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/DMSP_5D-3/F16/SESS/SSM-Boom/PT1S
Description
Defense Meteorology Satellite Program, DMSP, F16 Vector Magnetometer Measurements, 850 km Altitude
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/DMSP_5D-3/F16/SESS/SSM-Boom/PT1S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
DMSP F16 Special Sensor Magnetometer, SESS/SSM-Boom, Magnetic Field Measurements taken at 850 km, 1 s Data
DOI
https://doi.org/10.48322/bh8f-yy31
ReleaseDate
2025-12-04 13:29:09Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-30 12:34:56.789
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-10-02 15:11:49Z
Note
Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:29:09Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
Defense Meteorology Satellite Program, DMSP, F16 Vector Magnetometer Measurements, 850 km Altitude
Acknowledgement
R.J. Redmon, Data Access provided by NGDC in Coordination with AFRL and the University of Colorado, Boulder. Please acknowledge the Data Providers. If you find Problems, please report them.
PublicationInfo
Authors
Redmon, Robert, J.
PublicationDate
2023-01-01 00:00:00
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Robert.J.Redmon
2.
MetadataContact
spase://SMWG/Person/Robert.E.McGuire
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
NGDC, STP, Satellite Data Services
URL
https://www.ngdc.noaa.gov/stp/satellite/satdataservices.html
Description
NGDC Solar and Terrestrial Physics, STP, Satellite Data Services
PriorIDs
spase://VSPO/NumericalData/DMSP_5D-3/F16/SESS/SSM-Boom/PT1S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf16/ssm/magnetometer/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/dmsp/dmspf16/ssm/magnetometer/
Description
Access to Data in CDF Format via http from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=DMSP-F16_SSM_MAGNETOMETER&index=sp_phys
ProductKey
DMSP-F16_SSM_MAGNETOMETER
Description
Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/dmsp/dmspf16/ssm/magnetometer/$Y
AccessFilenameTemplate
dmsp-f16_ssm_magnetometer_$Y$m$d_$v.cdf
Acknowledgement
R.J. Redmon, Data Access provided by NGDC in Coordination with AFRL and the University of Colorado, Boulder. Please acknowledge the Data Providers. If you find Problems, please report them. Please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/DMSP-F16_SSM_MAGNETOMETER/clientLibraryExample/
Style
WebService
ProductKey
DMSP-F16_SSM_MAGNETOMETER
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
R.J. Redmon, Data Access provided by NGDC in Coordination with AFRL and the University of Colorado, Boulder. Please acknowledge the Data Providers. If you find Problems, please report them. Please acknowledge the data providers and CDAWeb when using these data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
DMSP-F16_SSM_MAGNETOMETER
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
R.J. Redmon, Data Access provided by NGDC in Coordination with AFRL and the University of Colorado, Boulder. Please acknowledge the Data Providers. If you find Problems, please report them. Please acknowledge the data providers and CDAWeb when using these data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/DMSP_5D-3/F16/SESS/SSM-Boom
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2010-01-01 00:00:00.000
StopDate
2014-12-30 23:59:59.999
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 Time
ParameterKey
Epoch
Description
Epoch Time, Default
Caveats
This parameter exhibits an increasing monotonic progression.
Cadence
PT1S
Units
ms
UnitsConversion
1e-3>s
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
Spacecraft Position, ECI
Set
Time series defined by using: EPOCH
ParameterKey
SC_ECI
Description
Spacecraft Position, Earth Centered Inertial, ECI, Cartesian Coordinates
Caveats
Epoch is True of Date, TOD. These ECI Coordinates are calculated from an SPDF SSC Locator 1 min Ephemeris using an Eight Order Interpolation, Burden, R.L., and Faires, J.D., Numerical Analysis, 5th Ed., PWS Publishing Company, Boston, 1993. Using SPDF Methods, the expected Accuracy is on the Order of a few km.
Cadence
PT1S
Units
km
UnitsConversion
1e3>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEI
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
x_ECI
Index
1
Element
Name
y_ECI
Index
2
Element
Name
z_ECI
Index
3
ValidMin
-7500.0
ValidMax
7500.0
FillValue
NaN
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #3
Name
Spacecraft Latitude, GEO
Set
Time series defined by using: EPOCH
ParameterKey
SC_GEOCENTRIC_LAT
Description
Spacecraft Latitude, Geographic Inertial, GEO, Coordinates
Caveats
Calculated by using IDL Astro Library Function ECI2GEO
Cadence
PT1S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_GEOCENTRIC_LAT
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
-90.0
ValidMax
90.0
FillValue
NaN
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #4
Name
Spacecraft Longitude, GEO
Set
Time series defined by using: EPOCH
ParameterKey
SC_GEOCENTRIC_LON
Description
Spacecraft Longitude, Geographic Inertial, GEO, Coordinates
Caveats
Calculated by using IDL Astro Library Function ECI2GEO
Cadence
PT1S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_GEOCENTRIC_LON
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
360.0
FillValue
NaN
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #5
Name
Spacecraft Geocentric Distance
Set
Time series defined by using: EPOCH
ParameterKey
SC_GEOCENTRIC_R
Description
Spacecraft Geocentric Distance
Cadence
PT1S
Units
km
UnitsConversion
1e3>m
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_GEOCENTRIC_R
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
6378.0
ValidMax
7500.0
FillValue
NaN
Support
Qualifier
Magnitude
SupportQuantity
Positional
Parameter #6
Name
Spacecraft Latitude, AACGM
Set
Time series defined by using: EPOCH
ParameterKey
SC_AACGM_LAT
Description
Spacecraft Latitude, Altitude Adjusted Corrected Geomagnetic, AACGM, Coordinates
Caveats
Calculated by using the SuperDARN AACGM IDL Library. Values are the Result of linearly interpolating between two nearest AACGM 5 Year Epochs.
Cadence
PT1S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
CGM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_AACGM_LAT
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
-90.0
ValidMax
90.0
FillValue
NaN
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #7
Name
Spacecraft Longitude, AACGM
Set
Time series defined by using: EPOCH
ParameterKey
SC_AACGM_LON
Description
Spacecraft Longitude, Altitude Adjusted Corrected Geomagnetic, AACGM, Coordinates
Caveats
Calculated by using the SuperDARN AACGM IDL Library. Values are the Result of linearly interpolating between two nearest AACGM 5 Year Epochs.
Cadence
PT1S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
CGM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_AACGM_LON
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
360.0
FillValue
NaN
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #8
Name
Spacecraft Local Time, AACGM
Set
Time series defined by using: EPOCH
ParameterKey
SC_AACGM_LTIME
Description
Spacecraft Local Time, Altitude Adjusted Corrected Geomagnetic, AACGM, Coordinates
Caveats
Calculated by using the SuperDARN AACGM IDL Library. Values are the Result of linearly interpolating between two nearest AACGM 5 Year Epochs.
Cadence
PT1S
Units
h
UnitsConversion
3600>s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
CGM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_AACGM_LTIME
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
24.0
FillValue
NaN
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #9
Name
Magnetic Field, Spacecraft Frame
Set
Time series defined by using: EPOCH
ParameterKey
B_SC_OBS_ORIG
Description
Magnetic Field as originally measured in Spacecraft Frame
Caveats
X is Geodedic Nadir, Down, Y is along Spacecraft Track, the Ram Direction, Z is Across-Track to the Right. Note, the Pertrubations in this Variable have been recomputed from the Observed B-Field. IGRF11 was run using this Day as Epoch to compute a new, more accurate Geocentric Location that was rotated into Spacecraft Coordinates and then removed.
Cadence
PT1S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SC
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
Bx_SC
Index
1
Element
Name
By_SC
Index
2
Element
Name
Bz_SC
Index
3
ValidMin
-100000.0
ValidMax
100000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #10
Name
Delta-B, measured minus IGRF, Spacecraft Frame
Set
Time series defined by using: EPOCH
ParameterKey
DELTA_B_SC_ORIG
Description
Delta Magnetic Field, Delta-B, which is equal to the originally measured Magnetic Field minus the International Geomagnetic Reference Field, IGRF, Model Magnetic Field, Spacecraft Frame
Caveats
X is Geodedic Nadir, Down, Y is along Spacecraft Track, the Ram Direction, Z is Across-Track to the Right
Cadence
PT1S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SC
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
dB X_SC
Index
1
Element
Name
dB Y_SC
Index
2
Element
Name
dB Z_SC
Index
3
ValidMin
-2000.0
ValidMax
2000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #11
Name
Baseline corrected Delta-B, GEO
Set
Time series defined by using: EPOCH
ParameterKey
DELTA_B_GEO
Description
Baseline corrected Delta-B, Geographic, GEO, Spherical, East, North, Up, Coordinates
Caveats
Finite Differences between adjacent Points on Spacecraft Track were used to determine along Track and across Track Unit Vectors in GEO. No Altitude Change between adjacent Points was assumed. Baseline Correction, F. Rich's MFIT Procedure, is Polynomial Fit every Half-Pass to each Component of Delta-B in Spacecraft Coordinates by using only Data from Regions equatorward of the DMSP Auroral Boundary from the CEDAR Database.
Cadence
PT1S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
BC dB East
Index
1
Element
Name
BC dB North
Index
2
Element
Name
BC dB Up
Index
3
ValidMin
-2000.0
ValidMax
2000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #12
Name
Baseline corrected Delta-B, APX
Set
Time series defined by using: EPOCH
ParameterKey
DELTA_B_APX
Description
Baseline corrected Delta-B, Modified Apex, APX, Coordinates, Reference Height 110 km
Caveats
Coordinates transformed with APEX-PYTHON, NCAR HAO, with Reference Altitude equal to 110 km, See Richmond, J. Geomag. Geoelec., 1995. Baseline Correction, F. Rich's MFIT Procedure, is Polynomial Fit every Half-Pass to each Component of Delta-B in Spacecraft Coordinates by using only Data from Regions equatorward of the DMSP Auroral Boundary from the CEDAR Database.
Cadence
PT1S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
LGM
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
BC dB d1, nearly eastward
Index
1
Element
Name
BC dB d2, nearly equatorward
Index
2
Element
Name
BC dB d3, nearly upward
Index
3
ValidMin
-2000.0
ValidMax
2000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #13
Name
Baseline corrected Delta-B, Spacecraft Frame
Set
Time series defined by using: EPOCH
ParameterKey
DELTA_B_SC
Description
Baseline corrected Delta-B, Spacecraft Frame
Caveats
X is Geodedic Nadir, Down, Y is along Spacecraft Track, the Ram Direction, Z is Across-Track to the Right. Baseline Correction, F. Rich's MFIT Procedure, is Polynomial Fit every Half-Pass to each Component of Delta-B in Spacecraft Coordinates by using only Data from Regions equatorward of the DMSP Auroral Boundary from the CEDAR Database.
Cadence
PT1S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SC
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
BC dB X_SC
Index
1
Element
Name
BC dB Y_SC
Index
2
Element
Name
BC dB Z_SC
Index
3
ValidMin
-2000.0
ValidMax
2000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #14
Name
Spacecraft Latitude, APX
Set
Time series defined by using: EPOCH
ParameterKey
SC_APEX_LAT
Description
Spacecraft Latitude, Modified Apex Geomagnetic, APXGM, Coordinates, Reference Height 110 km
Caveats
Calculated by using Apex-Python, which is based on Apex Fortran Code available from CEDAR Database with the nearest Year Epoch
Cadence
PT1S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
LGM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_APEX_LAT
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
-90.0
ValidMax
90.0
FillValue
NaN
Field
Qualifier
DirectionAngle.ElevationAngle
FieldQuantity
Magnetic
Parameter #15
Name
Spacecraft Longitude, APX
Set
Time series defined by using: EPOCH
ParameterKey
SC_APEX_LON
Description
Spacecraft Longitude, Modified Apex Geomagnetic, APXGM, Coordinates, Reference Height 110 km
Caveats
Calculated by using Apex-Python, which is based on Apex Fortran Code available from CEDAR Database with the nearest Year Epoch
Cadence
PT1S
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
LGM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_APEX_LON
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
-180.0
ValidMax
180.0
FillValue
NaN
Field
Qualifier
DirectionAngle.AzimuthAngle
FieldQuantity
Magnetic
Parameter #16
Name
Spacecraft Local Time, APX
Set
Time series defined by using: EPOCH
ParameterKey
SC_APEX_MLT
Description
Spacecraft Local Time, Modified Apex Geomagnetic, APXGM, Coordinates, Reference Height 110 km
Caveats
Calculated by using Apex-Python, which is based on Apex Fortran Code available from CEDAR Database with the nearest Year Epoch
Cadence
PT1S
Units
h
UnitsConversion
3600>s
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
LGM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SC_APEX_MLT
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
24.0
FillValue
NaN
Field
Qualifier
DirectionAngle.AzimuthAngle
FieldQuantity
Magnetic
Parameter #17
Name
Spacecraft Region Code
Set
Time series defined by using: EPOCH
ParameterKey
AURORAL_REGION
Description
Spacecraft Region Code: 1=Equatorial, 2=Auroral, 3=Polar
Caveats
0-No Boundary Identified, 1-Equatorward of the Auroral Zone, 2-Auroral Zone, 3-Polar Cap
Cadence
PT1S
Units
(2=Auroral)
RenderingHints
DisplayType
TimeSeries
AxisLabel
AURORAL_REGION
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
3.0
FillValue
NaN
Support
SupportQuantity
Other
Parameter #18
Name
Auroral Boundary Determination, FOM
Set
Time series defined by using: EPOCH
ParameterKey
AURORAL_BOUNDARY_FOM
Description
Auroral Boundary Determination Figure of Merit, FOM: OK if Equal to 2 or Greater
Caveats
Typical Range 0-4. Less than 2 is Suspect. See the DMSP CDF User Manual for full Specification of FOM Computation.
Cadence
PT1S
Units
(OK>=2)
RenderingHints
DisplayType
TimeSeries
AxisLabel
AURORAL_BOUNDARY_FOM
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
5.0
FillValue
NaN
Support
Qualifier
Uncertainty
SupportQuantity
Other
Parameter #19
Name
Orbit Index by Day
Set
Time series defined by using: EPOCH
ParameterKey
ORBIT_INDEX
Description
Integer representing the Orbit of the Day, signed by Hemisphere: >0=Northern, <0=Southern
Caveats
Orbit Start and End are determined by Crossings of the Apex Magnetic Equator. A value of 0 denotes the first Equator Crossing of the Day.
Cadence
PT1S
RenderingHints
DisplayType
TimeSeries
AxisLabel
ORBIT_INDEX
ValueFormat
E12.2
ScaleType
LinearScale
ValidMin
-18.0
ValidMax
18.0
FillValue
NaN
Support
SupportQuantity
Other
Parameter #20
Name
Spacecraft Ram Velocity Direction, Unit Vector, GEO
Set
Time series defined by using: EPOCH
ParameterKey
SC_ALONG_GEO
Description
Spacecraft Ram Velocity Direction, Unit Vector, Geographic, GEO, Coordinates
Caveats
This is an Estimate, based on a Spherical Trigonometry Approach by using a Great-Circle Arc between adjacent Points, See the User Manual.
Cadence
PT1S
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
along_SC East
Index
1
Element
Name
along_SC North
Index
2
Element
Name
along_SC Up
Index
3
ValidMin
-1.0
ValidMax
1.0
FillValue
NaN
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #21
Name
Unit Vector across the Spacecraft Track, GEO
Set
Time series defined by using: EPOCH
ParameterKey
SC_ACROSS_GEO
Description
Unit Vector across the Spacecraft Track to the Left and Orthogonal to the Spacecraft Ram Velocity Direction, Geographic, GEO, Coordinates
Caveats
This is an Estimate, based on a Spherical Trigonometry Approach by using a Great-Circle Arc between adjacent Points, See the User Manual.
Cadence
PT1S
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEO
RenderingHints
DisplayType
TimeSeries
ValueFormat
E12.2
ScaleType
LinearScale
Structure
Size
3
Element
Name
across_SC East
Index
1
Element
Name
across_SC North
Index
2
Element
Name
across_SC Up
Index
3
ValidMin
-1.0
ValidMax
1.0
FillValue
NaN
Support
Qualifier
Vector
SupportQuantity
Positional