CFC-11, CFC-12, and HCFC-22 from 2002-2012: The MIPAS V8 data set

CFC-11, CFC-12, and HCFC-22 contribute to the depletion of ozone and are potent greenhouse gases. They have been banned by the Montreal protocol. With MIPAS on Envisat the atmospheric composition could be observed between 2002 and 2012. Latitude-time cross-sections of version V8 data of CFC-12 (a, b), CFC-11 (c, d), and HCFC-22 (e, f) at 10    km (a, c, and e), and 14 km (b, d, and f) altitude are shown. White vertical bars mean no measurements, and other white areas denote regions with no information due to clouds in the line of sight, retrieval insensitivity, or discarded negative mean values in the plots.

The MIPAS V8 CFC-11, CFC-12, and HCFC-22 data record extends over 10 years, covering the upper troposphere and the stratosphere with a vertical resolution of about 3 km and a dense daily global coverage including dark polar winter conditions. Retrieval and the data characteristics, such as error budget, vertical and horizontal resolution, for the V8 data version retrieved with the IMK-IAA MIPAS data processor are presented in the paper by Stiller et al. (2024). Beyond trend studies in the context of ozone recovery, these data carry important information on stratospheric circulation, as analysed, e.g. with a scheme as proposed by von Clarmann and Grabowski (2016), or on transport processes in the upper troposphere, as analysed by Vogel et al. (2016, 2019).

All highlights can be found here.