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The ICON Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) Combined Wind and Temperaure

(2026). The ICON Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) Combined Wind and Temperaure. [Data set]. Space Physics Data Facility. https://doi.org/10.48322/tw3k-gr76. Accessed on .

Note: Proper references, including or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/ICON/MIGHTI/L3/Wind-Temperature/P10D

Description
The MIGHTI instrument measures the horizontal wind speed and direction (the wind vector). Each MIGHTI unit measures the wind along its line of sight. MIGHTI uses two perpendicular fields of view nominally pointing 45 degrees and 135 degrees in azimuth from the spacecraft velocity (MIGHTI A and MIGHTI B). Combining data from both units, this 90 degrees separation between their views allows the wind vector to be determined. For the wind measurements MIGHTI observes the Doppler shift of the atomic oxygen red and green lines at 630.0 nm and 557.7 nm wavelength. The wavelength shift is measured using field-widened, temperature compensated Doppler Asymmetric Spatial Heterodyne (DASH) spectrometers, employing low order échelle gratings operating at two different orders for the different atmospheric lines. The temperature measurement is accomplished by a multichannel photometric measurement of the spectral shape of the molecular oxygen A-band around 762 nm wavelength. For each field of view, the signals of the two oxygen lines and the A-band are detected on different regions of a single, cooled, frame transfer charge coupled device (CCD) detector. On-board calibration sources are used to periodically quantify thermal drifts, simultaneously with observing the atmosphere.

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:2.7.2

NumericalData

ResourceID
spase://NASA/NumericalData/ICON/MIGHTI/L3/Wind-Temperature/P10D
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
The ICON Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) Combined Wind and Temperaure
DOI
https://doi.org/10.48322/tw3k-gr76
ReleaseDate
2026-10-03 19:00:03Z
RevisionHistory
RevisionEvent
ReleaseDate
2026-09-15 00:00:00Z
Note
First release
RevisionEvent
ReleaseDate
2026-09-22 00:00:00Z
Note
Fixed ResourceID error. JMW.
RevisionEvent
ReleaseDate
2026-10-03 19:00:03Z
Note
Added DOI. tlk
Description
The MIGHTI instrument measures the horizontal wind speed and direction (the wind vector). Each MIGHTI unit measures the wind along its line of sight. MIGHTI uses two perpendicular fields of view nominally pointing 45 degrees and 135 degrees in azimuth from the spacecraft velocity (MIGHTI A and MIGHTI B). Combining data from both units, this 90 degrees separation between their views allows the wind vector to be determined. For the wind measurements MIGHTI observes the Doppler shift of the atomic oxygen red and green lines at 630.0 nm and 557.7 nm wavelength. The wavelength shift is measured using field-widened, temperature compensated Doppler Asymmetric Spatial Heterodyne (DASH) spectrometers, employing low order échelle gratings operating at two different orders for the different atmospheric lines. The temperature measurement is accomplished by a multichannel photometric measurement of the spectral shape of the molecular oxygen A-band around 762 nm wavelength. For each field of view, the signals of the two oxygen lines and the A-band are detected on different regions of a single, cooled, frame transfer charge coupled device (CCD) detector. On-board calibration sources are used to periodically quantify thermal drifts, simultaneously with observing the atmosphere.
Acknowledgement
National Aeronautics and Space Administration; Dr. Thomas Immel; Dr. Christoph Englert.
PublicationInfo
Authors
Englert, C.
PublicationDate
2026-09-15 00:00:00
PublishedBy
Space Physics Data Facility
Funding
Agency
National Aeronautics and Space Administration
Project
Explorers Program
AwardNumber
contracts NNG12FA45C
Funding
Agency
National Aeronautics and Space Administration
Project
Explorers Program
AwardNumber
contracts NNG12FA42I
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/Christoph.Englert
InformationURL
Name
Additional information on ICON
URL
https://icon.ssl.berkeley.edu/
Description
ICON spacecraft Homepage.
InformationURL
Name
Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) on ICON
URL
https://doi.org/10.1007/s11214-023-00971-1
Description
Space Science Reviews, 219(3), pp.27
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
ICON_L3-3_Wind-Temperature
Description
Web Service to this product using the HAPI interface.
Format
NetCDF
Acknowledgement
Please acknowledge Dr. Thomas Immel. 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
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/icon/l3/wind-temperature/
ProductKey
ICON_L3-3_Wind-Temperature
Description
Access to Data in NetCDF Format via https from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=ICON_L3-3_Wind-Temperature&index=sp_phys
ProductKey
ICON_L3-3_Wind-Temperature
Description
Access to NetCDFs via NASA/GSFC CDAWeb
Format
NetCDF
Encoding
None
Acknowledgement
Please acknowledge Dr. Thomas Immel. 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/ICON_L3-3_Wind-Temperature/clientLibraryExample/
Style
WebService
ProductKey
ICON_L3-3_Wind-Temperature
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
Please acknowledge Dr. Thomas Immel. Please acknowledge the Data Providers and CDAWeb when using these Data.
ProcessingLevel
Calibrated
ProviderName
ICON MIGHTI team
InstrumentIDs
spase://SMWG/Instrument/ICON/MIGHTI
MeasurementType
Dopplergram
TemporalDescription
TimeSpan
StartDate
2019-12-29 01:18:49Z
StopDate
2022-11-03 01:10:21Z
Cadence
P10D
ObservedRegion
Earth.NearSurface.Atmosphere
ObservedRegion
Earth.NearSurface.Ionosphere
Parameter #1
Name
Milliseconds since 1970-01-01 00:00:00 UTC
ParameterKey
Epoch
Description
Time corresponding to the middle of each 48 day average, in milliseconds since Jan 1 1970.
Cadence
P10D
Units
ms
ValidMin
0
ValidMax
6000000000000
FillValue
-999
Support
Qualifier
Magnitude
SupportQuantity
Temporal
Parameter #2
Name
Dates used in each 48 day bin
ParameterKey
ICON_L33_Included_Dates
Description
Dates used in each 48 day bin, in string format, in the format: 2017-05-27.
Cadence
P10D
FillValue
-999
Support
Qualifier
Magnitude
SupportQuantity
Temporal
Parameter #3
Name
Zonal Wind: Zonal component of the horizontal wind. Positive Eastward
ParameterKey
ICON_L33_ZONAL_WIND
Description
Mean value of zonal wind, taken over all good quality L31 datapoints in a 48-day time-span, as a function of longitude, latitude, time. Derived from ICON_L31_ZONAL_WIND
Cadence
P10D
Units
m/s
ValidMin
-4000
ValidMax
4000
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
AtomicNumber
8
Parameter #4
Name
Meridional Wind: Meridional component of the horizontal wind. Positive Northward.
ParameterKey
ICON_L33_MERIDIONAL_WIND
Description
Mean value of meridonal wind, taken over all good quality L31 datapoints in a 48-day time-span, as a function of altitude, longitude, latitude, time. Derived from ICON_L31_MERIDIONAL_WIND.
Cadence
P10D
Units
m/s
ValidMin
-4000
ValidMax
4000
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
AtomicNumber
8
Parameter #5
Name
Temperature
ParameterKey
ICON_L33_Temperature
Description
Mean value of temperature, taken over all good quality L31 datapoints in a 48-day time-span, as a function of altitude, longitude, latitude, time. Derived from ICON_L31_TEMPERATURE.
Cadence
PT31S
Units
K
ValidMin
0
ValidMax
9.999999848243207e+30
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Scalar
ParticleQuantity
Temperature
AtomicNumber
8
Parameter #6
Name
Number of data points for zonal and meridional winds
ParameterKey
ICON_L33_Datapoints_Wind
Description
Number of data points in each 48 day average of zonal and meridoanl winds, as a function of altitude, longitude, latitude, time.
Cadence
P10D
Units
counts
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
NaN
Support
Qualifier
Total
SupportQuantity
Other
Parameter #7
Name
Number of data points for temperature
ParameterKey
ICON_L33_Datapoints_Temperature
Description
Number of data points in each 48 day average of temperature, as a function of altitude,longitude, latitude, time.
Cadence
P10D
Units
counts
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
NaN
Support
Qualifier
Total
SupportQuantity
Other
Parameter #8
Name
Sigma Zonal Wind
ParameterKey
ICON_L33_Sigma_Zonal_Wind
Description
1 standard deviation of the good zonal wind values used to compute the mean, as a function of longitude, latitude, time.
Cadence
P10D
Units
m/s
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
AtomicNumber
8
Parameter #9
Name
Sigma Meridional Wind
ParameterKey
ICON_L33_Sigma_Meridional_Wind
Description
1 standard deviation of the good meridional wind values used to compute the mean, as a function of altitude, longitude, latitude, time.
Cadence
P10D
Units
m/s
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
AtomicNumber
8
Parameter #10
Name
Sigma Temperature
ParameterKey
ICON_L33_Sigma_Temperature
Description
1 standard deviation of the temperature values used to compute the mean, as a function of altitude, longitude, latitude, time.
Cadence
P10D
Units
K
ValidMin
0
ValidMax
1.000000020040877e+20
FillValue
NaN
Particle
ParticleType
Ion
Qualifier
Scalar
ParticleQuantity
Temperature
AtomicNumber
8
Parameter #11
Name
WGS84 altitude of each wind or temperature sample
ParameterKey
ICON_L33_Altitude
Description
Altitude grid used by the forward model, in WGS..
Cadence
P10D
Units
km
ValidMin
50
ValidMax
1600
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #12
Name
Local Time Bin
ParameterKey
ICON_L33_LocalTime
Description
Local time binned in 0.5 hour intervals, local time +/- 0.25 hours.
Cadence
P10D
Units
hours
ValidMin
0
ValidMax
24
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #13
Name
Latitude Bin
ParameterKey
ICON_L33_Latitude
Description
Latitude of the MIGHTI data, binned in 5 degree intervals, latitude +/- 2.5 degrees. Derived from ICON_MIGHTI_L31_Latitude.
Cadence
P10D
Units
degrees
ValidMin
-10
ValidMax
50
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #14
Name
Longitude Bin
ParameterKey
ICON_L33_Longitude
Description
Longitude of the MIGHTI data, binned in 15 degree intervals, longitude +/- 7.5 degrees. Derived from ICON_MIGHTI_L31_Longitude.
Cadence
P10D
Units
degrees
ValidMin
0
ValidMax
360
FillValue
-999
Support
Qualifier
Direction
SupportQuantity
Positional
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Last Updated: 2026-10-03