Articles | Volume 14, issue 12
https://doi.org/10.5194/amt-14-7959-2021
https://doi.org/10.5194/amt-14-7959-2021
Research article
 | 
21 Dec 2021
Research article |  | 21 Dec 2021

Phosgene distribution derived from MIPAS ESA v8 data: intercomparisons and trends

Paolo Pettinari, Flavio Barbara, Simone Ceccherini, Bianca Maria Dinelli, Marco Gai, Piera Raspollini, Luca Sgheri, Massimo Valeri, Gerald Wetzel, Nicola Zoppetti, and Marco Ridolfi

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Phosgene (COCl2) is a toxic gas whose presence is a consequence of human activity. Besides its direct injection in the troposphere, stratospheric COCl2 is produced from the decomposition of CCl4, an anthropogenic gas regulated by the Montreal Protocol. As a consequence, COCl2 negative trends characterize the lower and part of the middle stratosphere. However, we find positive trends in the upper troposphere, demonstrating the non-negligible role of other Cl-containing species not yet regulated.