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Upper limits on hydrogen halides in Jupiter from Cassini/CIRS observations |
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| Authors: | Thierry Fouchet Glenn Orton Simon B Calcutt |
| Institution: | a LESIA, Observatoire de Paris, 5 Place Jules Janssen, 92195 Meudon Cedex, France b AOPP, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, UK c Jet Propulsion Laboratory, California Institute of Technology, MS 169-237, 4800 Oak Grove Drive, Pasadena, CA 91109, USA d University of Maryland, College Park, MD 20742, USA |
| Abstract: | We have determined the following upper limits for the mole fraction of hydrogen halides in Jupiter's atmosphere from Cassini/CIRS observations: HF]<2.7×10−11, HCl]<2.3×10−9, HBr]<1.0×10−9, HI]<7.6×10−9. These limits are smaller than solar composition for HF and HCl, and support the halogens' condensation in ammonium salts predicted by thermochemical models for the upper jovian troposphere. |
| Keywords: | Jupiter atmosphere Atmospheres composition Abundances atmospheres |
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