Radiative forcing due to stratospheric water vapour from CH4 oxidation

  title={Radiative forcing due to stratospheric water vapour from CH4 oxidation},
  author={Gunnar Myhre and J{\o}rgen Skredsvig Nilsen and Line Gulstad and Keith P. Shine and Bj{\o}rg Rognerud and Ivar S. A. Isaksen},
  journal={Geophysical Research Letters},
Here we report on estimates of the changes in stratospheric water vapour (SWV) due to methane oxidation based on observational data. Above the tropopause oxidation of methane results in a decrease in its mixing ratio with altitude and this is a major source for SWV. The vertical profile of SWV changes from methane oxidation is presented here using satellite observations of the vertical profile of methane. Trends in the SWV are shown to be small in the lower stratosphere, but can reach 0.7 ppbv… 

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