Global CO2 distributions from MIPAS

CO₂ volume mixing ratios as a function of latitude and altitude for four seasons (left upper panel: winter; right upper panel: spring; left lower panel: summer; right lower panel: autumn). The mixing ratios were inferred from MIPAS spectra in the 4.3 µm band.

The two major challenges of a retrieval of CO₂ in this altitude range are: (1) The elevation pointing has to be retrieved along with the mixing ratio of CO₂, and (2) non-local thermodynamic equilibrium has to be considered. This work is a result from a cooperation between IMK and the IAA-CSIC in Granada, Spain.

For further details, see http://www.atmos-meas-tech.net/9/6081/2016/