skip to content

Yusuf Hamied 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

Improvements to the representation of BVOC chemistry-climate interactions in UKCA (v11.5) with the CRI-Strat 2 mechanism: incorporation and evaluation
J Weber, S Archer-Nicholls, NL Abraham, YM Shin, TJ Bannan, CJ Percival, A Bacak, P Artaxo, M Jenkin, MAH Khan, DE Shallcross, RH Schwantes, J Williams, AT Archibald
– Geoscientific Model Development
(2021)
14,
5239
Climate change modulates the stratospheric volcanic sulfate aerosol lifecycle and radiative forcing from tropical eruptions.
TJ Aubry, J Staunton-Sykes, LR Marshall, J Haywood, NL Abraham, A Schmidt
– Nature Communications
(2021)
12,
4708
Co-emission of volcanic sulfur and halogens amplifies volcanic effective radiative forcing
J Staunton-Sykes, TJ Aubry, YM Shin, J Weber, LR Marshall, N Luke Abraham, A Archibald, A Schmidt
– Atmospheric Chemistry and Physics
(2021)
21,
9009
Assessing and improving cloud-height-based parameterisations of global lightning flash rate, and their impact on lightning-produced NOx and tropospheric composition in a chemistry–climate model
AK Luhar, IE Galbally, MT Woodhouse, NL Abraham
– Atmospheric Chemistry and Physics
(2021)
21,
7053
The Common Representative Intermediates Mechanism Version 2 in the United Kingdom Chemistry and Aerosols Model
S Archer-Nicholls, NL Abraham, YM Shin, J Weber, MR Russo, D Lowe, SR Utembe, FM O'Connor, B Kerridge, B Latter, R Siddans, M Jenkin, O Wild, AT Archibald
– Journal of Advances in Modeling Earth Systems
(2021)
13,
ARTN e2020MS002420
Constraints on global aerosol number concentration, SO2 and condensation sink in UKESM1 using ATom measurements
A Ranjithkumar, H Gordon, C Williamson, A Rollins, K Pringle, A Kupc, NL Abraham, C Brock, K Carslaw
– Atmospheric Chemistry and Physics
(2021)
21,
4979
Tropospheric ozone in CMIP6 simulations
PT Griffiths, LT Murray, G Zeng, YM Shin, NL Abraham, AT Archibald, M Deushi, LK Emmons, IE Galbally, B Hassler, LW Horowitz, J Keeble, J Liu, O Moeini, V Naik, FM O'Connor, N Oshima, D Tarasick, S Tilmes, ST Turnock, O Wild, PJ Young, P Zanis
– Atmospheric Chemistry and Physics
(2021)
21,
4187
Sensitivity of modeled Indian monsoon to Chinese and Indian aerosol emissions
P Sherman, M Gao, S Song, AT Archibald, N Luke Abraham, JF Lamarque, D Shindell, G Faluvegi, MB McElroy
– Atmospheric Chemistry and Physics
(2021)
21,
3593
Co-emission of volcanic sulfur and halogens amplifies volcanic effective radiative forcing
J Staunton-Sykes, TJ Aubry, YM Shin, J Weber, LR Marshall, NL Abraham, A Schmidt, A Archibald
– Atmospheric Chemistry and Physics
(2021)
Assessment of pre-industrial to present-day anthropogenic climate forcing in UKESM1
FM O'Connor, N Luke Abraham, M Dalvi, GA Folberth, PT Griffiths, C Hardacre, BT Johnson, R Kahana, J Keeble, B Kim, O Morgenstern, JP Mulcahy, M Richardson, E Robertson, J Seo, S Shim, JC Teixeira, ST Turnock, J Williams, AJ Wiltshire, S Woodward, G Zeng
– Atmospheric Chemistry and Physics
(2021)
21,
1211
  • 1 of 15
  • >

Research Group

Telephone number

01223 748899

Email address

nla27@cam.ac.uk