SIMULATION OF THE SPECTRAL CONTENT OF THE 7.8-MU-M EMISSION FROM JUPITER AT HIGH-RESOLUTION

Jovian emission due to 12CH4, 13CH4, and CH3D in the 1100 to 1400 cm-1 region is simulated at high spectral resolution as seen from the Earth from an altitude of 4 km above sea level. Due to absorption in the Earth's atmosphere, strong lines do not contribute significantly to the total intensity in this region; it is the weak to marginally strong lines that contribute most. Polar hot spots and other midlatitude features observed in broadband observations are conclusively shown to be stratospheric effects. Signal enhancement in the broadband observations is obtained at zenith angles close to zero and increased doppler shifts; however, the magnitude in the latter case is a sensitive function of the stratospheric temperature. © 1991.