<Methane> reaching the <stratosphere> is oxidized and is an important source of stratospheric <water vapor>. That <water> can feed <HOx radical family> chemistry and alter <radiative cooling> and polar-cloud conditions. <Methane> also converts <chlorine> atoms into <hydrogen chloride>, opposing some chlorine-driven <ozone> loss. These effects compete: increasing <methane> does not have one universal <ozone> sign at every altitude and latitude.

Solution

Past exam of the chemistry course of the year 4 of the natural sciences course of the University of Cambridge / 2021 / Interdisciplinary paper IDP1 / 2 / a / ii / Solution

 Solution (source code)