Martyn Chipperfield's Group Pages


We study the chemical and dynamical processes which affect the composition of the natural and polluted atmosphere from the surface to about 100 km. We develop and use detailed 3-D models and use observations from a wide range of platforms.

Recent work

Ozone return dates from CCMI simulations

As part of the modelling work for the WMO/UNEP 2018 Ozone Assessment (in support of the Montreal Protocol) we have led a study of stratospheric ozone recovery. We analysed around 20 chemistry-climate models to estimate the dates by when ozone will return to 1980 levels. See Dhomse et al., (ACP, 2018).



September 2023 PhD student Emily Dowd has most-viewed BBC Science article 16/9/2023... Major UK methane greenhouse gas leak spotted from space.

December 2022 No ozone hole in the tropics! Our rebuttal of paper in AIP Advances which claimed that there is... (Chipperfield et al., 2022).

October 2022 Stephen Anderson, Marco Gonzalez and Nancy Sherman wrote an EOS article on the Montreal Protocol, highlighting twelve papers which formed "the scientific basis for fast action to strengthen the treaty, which was already safeguarding stratospheric ozone, so it also protects the climate by reducing super pollutants.". The papers include Chipperfield et al., Nat. Comms, 2015..

August 2020 New Nature paper on ozone recovery metrics. (Pyle et al., 2022).

June 2022 Emily's talk at ESA Living Planet symposium highlighted. (ESA story).

October 2020 New Nature paper on global N2O budget. (Tian et al., 2020).

November 2019 New Nature Climate Change paper on increasing N2O emissions. (Thompson et al., 2019).

January 2019 Chris Kelly wins 2018 AGU Outstanding Student Poster Award.

November 2018 New GRL paper on phosgene in the upper troposphere and lower stratosphere (Harrison et al., 2018).

November 2018 Chris Kelly wins poster prize at ICAS Annual Science Meeting.

October 2018 Evgenia wins 2018 EGU Outstanding Poster Award.

October 2018 New GRL paper on N2O source in the mesosphere. (Kelly et al., 2018).

News Archive