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/