Data Access
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.
Version:2.7.2
Version:2.7.2
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.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Christoph.Englert |
ICON spacecraft Homepage.
Space Science Reviews, 219(3), pp.27
Web Service to this product using the HAPI interface.
Access to Data in NetCDF Format via https from SPDF
Access to NetCDFs via NASA/GSFC CDAWeb
Time corresponding to the middle of each 48 day average, in milliseconds since Jan 1 1970.
Dates used in each 48 day bin, in string format, in the format: 2017-05-27.
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
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.
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.
Number of data points in each 48 day average of zonal and meridoanl winds, as a function of altitude, longitude, latitude, time.
Number of data points in each 48 day average of temperature, as a function of altitude,longitude, latitude, time.
1 standard deviation of the good zonal wind values used to compute the mean, as a function of longitude, latitude, time.
1 standard deviation of the good meridional wind values used to compute the mean, as a function of altitude, longitude, latitude, time.
1 standard deviation of the temperature values used to compute the mean, as a function of altitude, longitude, latitude, time.
Altitude grid used by the forward model, in WGS..
Local time binned in 0.5 hour intervals, local time +/- 0.25 hours.
Latitude of the MIGHTI data, binned in 5 degree intervals, latitude +/- 2.5 degrees. Derived from ICON_MIGHTI_L31_Latitude.
Longitude of the MIGHTI data, binned in 15 degree intervals, longitude +/- 7.5 degrees. Derived from ICON_MIGHTI_L31_Longitude.