Gemini/TEXES Spectroscopic Observations of Jupiter (March 12-14 2017)

This dataset contains Gemini/TEXES spectroscopic maps of Jupiter, acquired between March 12-14 2017 in support of NASA's Juno mission.  The data and its reduction/analysis is fully described in Fletcher et al. (2020), Jupiter's Equatorial Plumes and Hot Spots:  Spectral Mapping from Gemini/TEXES and Juno/MWR, Journal of Geophysical Research - Planets.

As described in that paper, TEXES scan maps were acquired in seven groups (three on March 12, three on March 13, and one on March 14), with each group containing scan maps at 9 spectral settings (539, 587, 745, 819, 900, 960, 1165, 1248 and 2145 cm-1).  Each setting spans approximately 10-20 cm-1, with variable spectral resolution as described in the article.  

Each scan map has been geometrically registered (i.e., latitudes, longitudes, and emission angles have been assigned), wavelength calibrated, and destriped.  Radiometric calibration is in its raw form, based on TEXES observations of the telluric sky emission and a blank card in the instrument.  However, we found it necessary to scale these spectra to match observations from Cassini/CIRS, using the following scale factors for all spectra:

• fac538= 0.9
• fac587= 0.687705
• fac744= 0.872656
• fac819= 0.600016
• fac901= 0.544984
• fac960= 0.427803
• fac1161=0.636066
• fac1248=1.0
• fac2145=1.0

The format of the individual files (IDL "save" files) is as follows:

• EMMIMG          FLOAT     = Array[721, 361] - emission angles for each point in the map
• HDR             STRING    = Array[126] - header containing information about each observation
• IMAGE_REDUCT    FLOAT     = Array[149, 183] - summed image of Jupiter from all points in a spectral scan.
• IMG             FLOAT     = Array[374, 721, 361] - cylindrically mapped Jupiter data at 374 wavenumber positions.
• OLAT            FLOAT     = Array[361] - planetographic latitudes
• OLON            FLOAT     = Array[721] - System III West longitudes.
• SKY             FLOAT     = Array[374] - sky emission on the wavenumber grid.
• SUBLAT          FLOAT     - sub-observer latitude
• SUBLON          FLOAT      - sub-observer longitude
• TRUESKY         FLOAT     = Array[374] - sky emission on the wavenumber grid.
• WAVENUMBER      DOUBLE    = Array[374] - wavenumber array