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First measurements of CFC‐113 and HCFC‐142b from space using ACE‐FTS infrared spectra

The first measurements of CFC‐113 (CCl2FCClF2) and HCFC‐142b (CH3CClF2) from space have been performed by the Atmospheric Chemistry Experiment (ACE), a satellite‐based mission for remote sensing of the Earth's atmosphere. Retrievals for the volume mixing ratio profiles of these two molecules have been performed for ACE‐FTS measurements at mid‐latitudes and in the tropics, and the results are compared with AGAGE surface measurements. The agreement between ACE and AGAGE mixing ratios is within 15% for both CFC‐113 and HCFC‐142b.