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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.

Teaching

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.

Publications

Assessment of pre-industrial to present-day anthropogenic climate forcing in UKESM1
FM O'Connor, NL Abraham, M Dalvi, G Folberth, P Griffiths, C Hardacre, BT Johnson, R Kahana, J Keeble, B Kim, O Morgenstern, JP Mulcahy, MG Richardson, E Robertson, J Seo, S Shim, JC Teixeira, S Turnock, J Williams, A Wiltshire, G Zeng
– Atmospheric Chemistry and Physics
(2020)
1
Projecting ozone hole recovery using an ensemble of chemistry-climate models weighted by model performance and independence
M Amos, PJ Young, JS Hosking, J-F Lamarque, NL Abraham, H Akiyoshi, AT Archibald, S Bekki, M Deushi, P Jöckel, D Kinnison, O Kirner, M Kunze, M Marchand, DA Plummer, D Saint-Martin, K Sudo, S Tilmes, Y Yamashita
– Atmospheric Chemistry and Physics
(2020)
1
Implementation of UK Earth system models for CMIP6
AA Sellar, J Walton, CG Jones, R Wood, NL Abraham, M Andrejczuk, MB Andrews, T Andrews, AT Archibald, L Mora, H Dyson, M Elkington, R Ellis, P Florek, P Good, L Gohar, S Haddad, SC Hardiman, E Hogan, A Iwi, CD Jones, B Johnson, DI Kelley, J Kettleborough, JR Knight, MO Köhler, T Kuhlbrodt, S Liddicoat, I Linova‐Pavlova, MS Mizielinski, O Morgenstern, J Mulcahy, E Neininger, FM O'Connor, R Petrie, J Ridley, J Rioual, M Roberts, E Robertson, S Rumbold, J Seddon, H Shepherd, S Shim, A Stephens, JC Teixeira, Y Tang, J Williams, A Wiltshire
– Journal of Advances in Modeling Earth Systems
(2020)
UKESM1: Description and Evaluation of the U.K. Earth System Model
AA Sellar, CG Jones, JP Mulcahy, Y Tang, A Yool, A Wiltshire, FM O'Connor, M Stringer, R Hill, J Palmieri, S Woodward, L de Mora, T Kuhlbrodt, ST Rumbold, DI Kelley, R Ellis, CE Johnson, J Walton, NL Abraham, MB Andrews, T Andrews, AT Archibald, S Berthou, E Burke, E Blockley, K Carslaw, M Dalvi, J Edwards, GA Folberth, N Gedney, PT Griffiths, AB Harper, MA Hendry, AJ Hewitt, B Johnson, A Jones, CD Jones, J Keeble, S Liddicoat, O Morgenstern, RJ Parker, V Predoi, E Robertson, A Siahaan, RS Smith, R Swaminathan, MT Woodhouse, G Zeng, M Zerroukat
– Journal of Advances in Modeling Earth Systems
(2019)
11,
4513
A 1D RCE Study of Factors Affecting the Tropical Tropopause Layer and Surface Climate
S Dacie, L Kluft, H Schmidt, B Stevens, SA Buehler, PJ Nowack, S Dietmüller, NL Abraham, T Birner
– Journal of Climate
(2019)
32,
6769
Modelling the potential impacts of the recent, unexpected increase in CFC-11 emissions on total column ozone recovery
J Keeble, NL Abraham, AT Archibald, MP Chipperfield, S Dhomse, PT Griffiths, JA Pyle
– Atmospheric Chemistry and Physics
(2019)
1
Description and evaluation of the UKCA stratosphere-troposphere chemistry scheme (StratTrop vn 1.0) implemented in UKESM1
AT Archibald, FM O'Connor, NL Abraham, S Archer-Nicholls, MP Chipperfield, M Dalvi, GA Folberth, F Dennison, SS Dhomse, PT Griffiths, C Hardacre, AJ Hewitt, R Hill, CE Johnson, J Keeble, MO Köhler, O Morgenstern, JP Mulchay, C Ordóñez, RJ Pope, S Rumbold, MR Russo, N Savage, A Sellar, M Stringer, S Turnock, O Wild, G Zeng
– Geoscientific Model Development Discussions
(2019)
1
Clear-sky ultraviolet radiation modelling using output from the Chemistry Climate Model Initiative
K Lamy, T Portafaix, B Josse, C Brogniez, S Godin-Beekmann, H Bencherif, L Revell, H Akiyoshi, S Bekki, MI Hegglin, P Jöckel, O Kirner, B Liley, V Marecal, O Morgenstern, A Stenke, G Zeng, N Luke Abraham, AT Archibald, N Butchart, MP Chipperfield, G Di Genova, M Deushi, SS Dhomse, RM Hu, D Kinnison, M Kotkamp, R McKenzie, M Michou, FM O'Connor, LD Oman, G Pitari, DA Plummer, JA Pyle, E Rozanov, D Saint-Martin, K Sudo, TY Tanaka, D Visioni, K Yoshida
– Atmospheric Chemistry and Physics
(2019)
19,
10087
Simulating the climate response to atmospheric oxygen variability in the Phanerozoic: A focus on the Holocene, Cretaceous and Permian
DC Wade, N Luke Abraham, A Farnsworth, PJ Valdes, F Bragg, AT Archibald
– Climate of the Past
(2019)
15,
1463
Separating the role of direct radiative heating and photolysis in modulating the atmospheric response to the amplitude of the 11-year solar cycle forcing
EM Bednarz, AC Maycock, P Braesicke, PJ Telford, NL Abraham, JA Pyle
– Atmospheric Chemistry and Physics
(2019)
19,
9833
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Research Group

Telephone number

01223 748899

Email address

nla27@cam.ac.uk