Institute of Meteorology and Climate Research

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.

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