Search for sulfur (H2S) on Jupiter at millimeter wavelengths

The authors observed Jupiter at two wavelengths near 1.4 mm in an attempt to detect gaseous hydrogen sulfide (H₂S) or place new upper limits on its abundance in Jupiter´s atmosphere. Although they were not successful in detecting H₂S, they report the first brightness temperature observations of Jupiter at 1.4 mm with a spectral resolution of approximately 1 GHz using Mars as the calibration standard. The methodology and results of a laboratory experiment in which the authors measured H₂S absorption at 1.4 mm in a simulated Jovian atmosphere (predominantly H₂ and He) are discussed. The results of the laboratory measurements are applied to a radiative transfer model, which is used to interpret the observations of Jupiter