Troposphere
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Global atmospheric chlorine declined over 2004–2024
21-year satellite inventory shows global atmospheric chlorine declining since 2004, though emerging short-lived substances offset some gains from CFC phase-out regulations.
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UKESM misses key marine aerosol formation pathways
Evaluation of UKESM1.1 against ATom aircraft data reveals missing marine aerosol formation pathways involving iodine, amines, and organic vapours in remote regions.

