Articles | Volume 14, issue 12
Atmos. Meas. Tech., 14, 7959–7974, 2021
https://doi.org/10.5194/amt-14-7959-2021

Special issue: MIPAS ESA Level 2 version 8 products: algorithms, product...

Atmos. Meas. Tech., 14, 7959–7974, 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 et al.

Data sets

Envisat MIPAS L2 – Temperature, Pressure and Atmospheric Constituents Profiles Product European Space Agency https://doi.org/10.5270/EN1-c8hgqx4

Atmospheric Chemistry Experiment SciSat Level 2 Processed Data, v3.5/v3.6 (http://www.ace.uwaterloo.ca/data.php) P. Bernath, C. Boone, J. Steffen, and J. Crouse https://doi.org/10.20383/102.0495

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Short summary
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.