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Dr Luke Abraham

I am a NCAS Senior Research Associate working with Prof. John Pyle in 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 recent work has been on the development of a coupled atmosphere-ocean-chemistry model, using the MetUM atmosphere and NEMO/CICE, as covered in a 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

As part of the ACITES Atmospheric Chemistry Modelling Network 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.

The last face-to-face UKCA tutorials workshop was held on the 27th-28th March 2014 at the University of York, U.K.. More information can be found on the NCAS website. The NERC Advanced Training: Short Course scheme funded a course which was held in the Department on the 5th-9th January 2015. More information can be found on the UKCA website. Please contact me if you would like more information.

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

Publications

Drivers of changes in stratospheric and tropospheric ozone between year 2000 and 2100
A Banerjee, A C Maycock, A T Archibald, N Luke Abraham, P Telford, P Braesicke, J A Pyle
– Atmospheric Chemistry and Physics
(2016)
16,
2727
Evaluation of the ACCESS - Chemistry-climate model for the Southern Hemisphere
KA Stone, O Morgenstern, DJ Karoly, AR Klekociuk, WJ French, NL Abraham, R Schofield
– Atmospheric Chemistry and Physics
(2016)
16,
2401
Ozone changes under solar geoengineering: Implications for UV exposure and air quality
PJ Nowack, NL Abraham, P Braesicke, JA Pyle
– Atmospheric Chemistry and Physics Discussions
(2015)
15,
31973
Drivers of changes in stratospheric and tropospheric ozone between year 2000 and 2100
A Banerjee, AC Maycock, AT Archibald, NL Abraham, P Telford, P Braesicke, JA Pyle
– Atmospheric Chemistry and Physics Discussions
(2015)
15,
30645
Processes Controlling Tropical Tropopause Temperature and Stratospheric Water Vapor in Climate Models
SC Hardiman, IA Boutle, AC Bushell, N Butchart, MJP Cullen, PR Field, K Furtado, JC Manners, SF Milton, C Morcrette, FM O'Connor, BJ Shipway, C Smith, DN Walters, MR Willett, KD Williams, N Wood, NL Abraham, J Keeble, AC Maycock, J Thuburn, MT Woodhouse
– Journal of Climate
(2015)
28,
6516
Evaluation of the Australian Community Climate and Earth-System Simulator Chemistry-Climate Model
KA Stone, O Morgenstern, DJ Karoly, AR Klekociuk, WJR French, NL Abraham, R Schofield
– Atmospheric Chemistry and Physics Discussions
(2015)
15,
19161
Inclusion of mountain-wave-induced cooling for the formation of PSCs over the Antarctic Peninsula in a chemistry-climate model
A Orr, JS Hosking, L Hoffmann, J Keeble, SM Dean, HK Roscoe, NL Abraham, S Vosper, P Braesicke
– Atmospheric Chemistry and Physics
(2015)
15,
1071
A large ozone-circulation feedback and its implications for global warming assessments
PJ Nowack, NL Abraham, AC Maycock, P Braesicke, JM Gregory, MM Joshi, A Osprey, JA Pyle
– Nat Clim Chang
(2014)
5,
41
Isoprene chemistry in pristine and polluted Amazon environments: Eulerian and Lagrangian model frameworks and the strong bearing they have on our understanding of surface ozone and predictions of rainforest exposure to this priority pollutant
JG Levine, AR MacKenzie, OJ Squire, AT Archibald, PT Griffiths, NL Abraham, JA Pyle, DE Oram, G Forster, JF Brito, JD Lee, JR Hopkins, AC Lewis, SJB Bauguitte, CF Demarco, P Artaxo, P Messina, J Lathière, DA Hauglustaine, E House, CN Hewitt, E Nemitz
– Atmospheric Chemistry and Physics Discussions
(2015)
15,
24251
Direct and ozone-mediated forcing of the Southern Annular Mode by greenhouse gases
O Morgenstern, G Zeng, SM Dean, M Joshi, NL Abraham, A Osprey
– Geophysical Research Letters
(2014)
41,
9050
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Research Group

Telephone number

01223 748899

Email address

nla27@cam.ac.uk