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Department of Chemistry


I am an NCAS Principal Research Associate in the Department, working at the Centre for Atmospheric Science.

I work with the United Kingdom Chemistry and Aerosols community chemistry-aerosol-climate model. This is based on the Met Office Unified Model, and is a collaboration between the Universities of Cambridge, Leeds, Oxford, and the Met Office.

I am also a member of NCAS-CMS and provide model support for UKCA on both ARCHER and MONSooN. If you require support please raise a ticket with the CMS Helpdesk, or if you would like to know more about UKCA in general, please email me, or browse through the UKCA wiki. This provides information about the model, the standard jobs that are available, publications using the model, and also a tutorial covering how to get started with the model and add in new chemistry, emissions, species etc.

Research Interests

I am interested in chemistry-climate interactions and Earth-system modelling. I joined the group to work on the QUEST Earth-System Model, and now work on the UKCA chemistry-aerosol-climate model, which is part of the UM and will form the chemistry and aerosol components of UK-ESM1, the next generation UK joint NERC-Met Office Earth-system model.

A lot of my past work has been on the development of a coupled atmosphere-ocean-chemistry model, using the MetUM atmosphere and NEMO/CICE, as covered in an NCAS research highlight. Recently I have also been involved with the CCMI project. The video below follows the evolution of the Total Ozone Column from 1960-2100 from one of our ensemble members.

As part of my work on model development I am interested in the coupling of UKCA to the Unified Model, as well as other sub-models. The diagram below shows the current couplings at MetUM version 8.5 to the UKCA model.


I have developed a series of UKCA Tutorials. These tutorials are designed to be run in your own time, although I can also run a face-to-face tutorial which covers the contents. If you are interested in these tutorials, or would like me to run a session at your institution, please contact me.

Since 2015 UKCA training has been held in the Department, with the 2018 lectures recorded and available online. Details of future courses can be found on the NCAS website.

The image belows shows part of the emissions task - the regridding of emissions data from 0.5x0.5 degress to MetUM N96 resolution.


Tropospheric jet response to Antarctic ozone depletion: An update with Chemistry-Climate Model Initiative (CCMI) models
SW Son, BR Han, CI Garfinkel, SY Kim, R Park, NL Abraham, H Akiyoshi, AT Archibald, N Butchart, MP Chipperfield, M Dameris, M Deushi, SS Dhomse, SC Hardiman, P Jöckel, D Kinnison, M Michou, O Morgenstern, FM O'Connor, LD Oman, DA Plummer, A Pozzer, LE Revell, E Rozanov, A Stenke, K Stone, S Tilmes, Y Yamashita, G Zeng
– Environmental Research Letters
Stratospheric ozone loss over the Eurasian continent induced by the polar vortex shift.
J Zhang, W Tian, F Xie, MP Chipperfield, W Feng, S-W Son, NL Abraham, AT Archibald, S Bekki, N Butchart, M Deushi, S Dhomse, Y Han, P Jöckel, D Kinnison, O Kirner, M Michou, O Morgenstern, FM O'Connor, G Pitari, DA Plummer, LE Revell, E Rozanov, D Visioni, W Wang, G Zeng
– Nature Communications
Diagnosing the radiative and chemical contributions to future changes in tropical column ozone with the UM-UKCA chemistry–climate model
AC Maycock, JA Pyle
– Atmospheric Chemistry and Physics
Deriving Global OH Abundance and Atmospheric Lifetimes for Long-Lived Gases: A Search for CH3CCl3 Alternatives
Q Liang, MP Chipperfield, EL Fleming, NL Abraham, P Braesicke, JB Burkholder, JS Daniel, S Dhomse, PJ Fraser, SC Hardiman, CH Jackman, DE Kinnison, PB Krummel, SA Montzka, O Morgenstern, A McCulloch, J Mühle, PA Newman, VL Orkin, G Pitari, RG Prinn, M Rigby, E Rozanov, A Stenke, F Tummon, GJM Velders, D Visioni, RF Weiss
– Journal of Geophysical Research: Atmospheres
On the role of ozone feedback in the ENSO amplitude response under global warming.
PJ Nowack, P Braesicke, N Luke Abraham, JA Pyle
– Geophys Res Lett
Review of the global models used within phase 1 of the Chemistry-Climate Model Initiative (CCMI)
S Tilmes, Y Yamashita, K Yoshida, G Zeng
– Geoscientific Model Development
Heterogeneous reaction of ClONO$_{2}$ with TiO$_{2}$ and SiO$_{2}$ aerosol particles: implications for stratospheric particle injection for climate engineering
FD Pope, P Braesicke, PT Griffiths, N Luke Abraham, J McGregor, I Matt Watson, R Anthony Cox, JA Pyle, M Kalberer
– Atmospheric Chemistry and Physics
Future Arctic ozone recovery: The importance of chemistry and dynamics
JA Pyle
– Atmospheric Chemistry and Physics
A multi-model intercomparison of halogenated very short-lived substances (TransCom-VSLS): Linking oceanic emissions and tropospheric transport for a reconciled estimate of the stratospheric source gas injection of bromine
LJ Carpenter, S Dhomse, M Dorf, A Engel, W Feng, S Fuhlbrügge, PT Griffiths, NRP Harris, R Hommel, T Keber, K Krüger, ST Lennartz, S Maksyutov, H Mantle, GP Mills, B Miller, SA Montzka, F Moore, MA Navarro, DE Oram, K Pfeilsticker, JA Pyle, B Quack, AD Robinson, E Saikawa, A Saiz-Lopez, S Sala, BM Sinnhuber, S Taguchi, S Tegtmeier, RT Lidster, C Wilson, F Ziska
– Atmospheric Chemistry and Physics
The impact of lightning on tropospheric ozone chemistry using a new global lightning parametrisation
DL Finney, RM Doherty, O Wild, NL Abraham
– Atmospheric Chemistry and Physics
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Research Group

Telephone number

01223 748899

Email address