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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
TWINS 1, TWINS 2 Storm Time Equatorial Magnetospheric Ion Temperatures derived from Energetic Neutral Fluxes (ENA), Modified Data 2 (MD2), 10 min Data
var authors='McComas, David, J.';
document.write(authors);
(2023).
TWINS 1, TWINS 2 Storm Time Equatorial Magnetospheric Ion Temperatures derived from Energetic Neutral Fluxes (ENA), Modified Data 2 (MD2), 10 min Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/grxp-5t19. Accessed on document.write(currentDateStr);.
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ResourceID
spase://NASA/NumericalData/TWINS/ENA/MagnetosphericIonTemperatures/ModifiedData/PT10M
Description
Two Wide-angle Imaging Neutral-atom Spectrometers, TWINS, energetic neutral atom, ENA, derived equatorial magnetospheric ion temperatures, see Katus et al. (2017)
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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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/TWINS/ENA/MagnetosphericIonTemperatures/ModifiedData/PT10M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
TWINS 1, TWINS 2 Storm Time Equatorial Magnetospheric Ion Temperatures derived from Energetic Neutral Fluxes (ENA), Modified Data 2 (MD2), 10 min Data
DOI
https://doi.org/10.48322/grxp-5t19
ReleaseDate
2025-12-04 13:32:07Z
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
2025-08-05 13:12:54Z
Note
Added ObservedRegion(s). 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 value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-10-03 11:24:15Z
Note
Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:32:07Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
Two Wide-angle Imaging Neutral-atom Spectrometers, TWINS, energetic neutral atom, ENA, derived equatorial magnetospheric ion temperatures, see Katus et al. (2017)
Acknowledgement
Please acknowledge the Principal Investigator D.J. McComas for use of the Data
PublicationInfo
Authors
McComas, David, J.
PublicationDate
2023-01-01 00:00:00
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/David.J.McComas
2.
MetadataContact
spase://SMWG/Person/Robert.M.Candey
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
TWINS Energetic Neutral Atom, Mission of Opportunity, Space Science Reviews publication
URL
https://doi.org/10.1007/s11214-008-9467-4
Description
McComas, D.J., F. Allegrini, J. Baldonado, B. Blake, P.C. Brandt, J. Burch, J. Clemmons, W. Crain, D. Delapp, R. DeMajistre, D. Everett, H. Fahr, L. Friesen, H. Funsten, J. Goldstein, M. Gruntman, R. Harbaugh, R. Harper, H. Henkel, C. Holmlund, G. Lay, D. Mabry, D. Mitchell, U. Nass, C. Pollock, S. Pope, M. Reno, S. Ritzau, E. Roelof, E. Scime, M. Sivjee, R. Skoug, Sotirelis, T.S., Thomsen, M., Urdiales, C., Valek, P., Viherkanto, K., Weidner, S., Ylikorpi, T., Young, M., and J. Zoennchen. The Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) NASA Mission-of-Opportunity, Space Sci. Rev., 142, 157-231, 2009, DOI: 10.1007/s11214-008-9467-4
InformationURL
Name
Katus et al. (2017) TWINS EUV storm time equatorial magnetospheric ion temperature images, Journal of Geophysical Research: Space Physics publication
URL
https://doi.org/10.1002/2016JA023824
Description
Katus, R.M., D.L. Gallagher, M.W. Liemohn, A.M. Keesee, and L.K. Sarno-Smith, Statistical Storm Time Examination of MLT dependent Plasmapause Location derived from IMAGE EUV, J. Geophys. Res. Space Phys., 120, 5545-5559, 2015, DOI: 10.1002/2015JA021225.
InformationURL
Name
NSSDC Master Catalog, TWINS 1 ENA instrument
URL
https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2006-027A-01
Description
General information concerning the Two Wide-angle Imaging Neutral-atom Spectrometer 1, TWINS 1, Energetic Neutral Atom, ENA, imager
InformationURL
Name
NSSDC Master Catalog, TWINS 2 ENA instrument
URL
https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=2008-010A-01
Description
General information concerning the Two Wide-angle Imaging Neutral-atom Spectrometer 2, TWINS 2, Energetic Neutral Atom, ENA, imager
PriorIDs
spase://VSPO/NumericalData/TWINS/ENA/MagnetosphericIonTemperatures/ModifiedData/PT10M
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/twins/combined/ena/m2/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/twins/combined/ena/m2/
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=TWINS_M2_ENA&index=sp_phys
ProductKey
TWINS_M2_ENA
Description
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/twins/combined/ena/m2/$Y
AccessFilenameTemplate
twins_m2_ena_$Y$m$d_$v.cdf
Acknowledgement
Please acknowledge the Principal Investigator D.J. McComas. 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/TWINS_M2_ENA/clientLibraryExample/
Style
WebService
ProductKey
TWINS_M2_ENA
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge the Principal Investigator D.J. McComas. 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
TWINS_M2_ENA
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
Please acknowledge the Principal Investigator D.J. McComas. Please acknowledge the Data Providers and CDAWeb when using these Data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/TWINS1/ENA
spase://SMWG/Instrument/TWINS1/Ephemeris
spase://SMWG/Instrument/TWINS2/ENA
spase://SMWG/Instrument/TWINS2/Ephemeris
MeasurementType
Ephemeris
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2009-07-21 00:00:00.000
StopDate
2017-11-07 23:59:59.999
Cadence
PT10M
ObservedRegion
Earth.Magnetosphere.Main
ObservedRegion
Earth.Magnetosphere.RadiationBelt
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Plasmasphere
Parameter #1
Name
Epoch Time, TT2000
ParameterKey
Epoch
Description
Epoch Time Tags in Terrestrial Time 2000, TT2000
Cadence
PT10M
Units
ns
UnitsConversion
1.0e-9>s
RenderingHints
DisplayType
TimeSeries
AxisLabel
Epoch
ValueFormat
F12.2
ValidMin
2000-01-01T00:00:00.000000000
ValidMax
2018-01-01T00:00:00.000000000
FillValue
9999-12-31T23:59:59.999999999
Support
SupportQuantity
Temporal
Parameter #2
Name
Inner Magnetospheric Ion Temperature, Images
Set
Time series defined by using: EPOCH
ParameterKey
Ion_Temperature
Description
Inner Magnetospheric Ion Temperature, Image format
Cadence
PT10M
Units
keV
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SM
RenderingHints
AxisLabel
IonTemp
ValueFormat
F12.2
Structure
Size
160 160
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
ParticleQuantity
Temperature
Parameter #3
Name
Inner Magnetospheric Ion Temperature, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Ion_Temperature_movie
Description
Inner Magnetospheric Ion Temperature, Movie format
Caveats
This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Ion_Temperature.
Cadence
PT10M
Units
keV
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SM
RenderingHints
AxisLabel
IonTemp
ValueFormat
F12.2
Structure
Size
160 160
FillValue
-1.0e+31
Particle
ParticleType
Ion
Qualifier
Magnitude
ParticleQuantity
Temperature
Parameter #4
Name
TWINS Satellite Number
Set
Time series defined by using: EPOCH
ParameterKey
Satellite
Description
Number of the TWINS Satellite used to calculate the Magnetospheric Ion Temperature: 1=TWINS 1, 2=TWINS 2
Cadence
PT10M
RenderingHints
DisplayType
TimeSeries
AxisLabel
Sat
ValueFormat
I2
ValidMin
1
ValidMax
2
FillValue
-32768
Support
SupportQuantity
Other
Parameter #5
Name
X-axis coordinates on the equatorial plane
ParameterKey
X_Axis
Description
X-axis coordinates on the equatorial plane, used to define the dependent grid
Cadence
PT10M
Units
Re
UnitsConversion
6.3712e6>m
RenderingHints
AxisLabel
X_Axis
ValueFormat
F12.2
Structure
Size
160
ValidMin
-60.0
ValidMax
40.0
FillValue
-1.0e+31
Support
Qualifier
Component.I
SupportQuantity
Other
Parameter #6
Name
Y-axis coordinates on the equatorial plane
ParameterKey
Y_Axis
Description
Y-axis coordinates on the equatorial plane, used to define the dependent grid
Cadence
PT10M
Units
Re
UnitsConversion
6.3712e6>m
RenderingHints
AxisLabel
Y_Axis
ValueFormat
F12.2
Structure
Size
160
ValidMin
-40.0
ValidMax
40.0
FillValue
-1.0e+31
Support
Qualifier
Component.J
SupportQuantity
Other
Parameter #7
Name
Spacecraft Position, Latitude, Geocentric Solar Magnetospheric Spherical Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
SatLatitude
Description
Spacecraft Position, Latitude, Geocentric Solar Magnetospheric, GSM, Spherical Coordinates for the TWINS satellite used to calculate the Magnetospheric Ion Temperature
Cadence
PT10M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SPC_Lat
ValueFormat
F12.2
ValidMin
-90.0
ValidMax
360.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #8
Name
Spacecraft Position, Geocentric Radial Distance
Set
Time series defined by using: EPOCH
ParameterKey
SatRadialDistance
Description
Spacecraft Position, Geocentric Radial Distance for the TWINS satellite used to calculate the Magnetospheric Ion Temperature
Cadence
PT10M
Units
Re
UnitsConversion
6.3712e6>m
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GSM
RenderingHints
DisplayType
TimeSeries
AxisLabel
SPC_Rad
ValueFormat
F12.2
ValidMin
1.0
ValidMax
10.0
FillValue
-1.0e+31
Support
Qualifier
Magnitude
SupportQuantity
Positional