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Yusuf Hamied Department of Chemistry

 
I am a Post-doctoral researcher working with Dr Alex Archibald in the Centre for Atmospheric Science
 
My current post at the Univeristy of Cambridge is focused on adding the Common Representitive Intermediates (CRI) chemical mechanism to the United Kingdom Chemistry and Aerosol (UKCA) component of the Met Office Unified Model. Using CRI will be a significant increase in complexity as compared to the existing mechanisms in UKCA, but will offer substantial benefits in more realistic simulation of VOC degredation, tropospheric ozone formation and provide the framework for more explicit secondary aerosol formation. The long-term goal is to use the UKCA with CRI chemistry to run global chemistry-climate simulations which in turn drive regional simulations using the Weather Research and Forecasting model with Chemistry (WRF-Chem), enabling high-resolution simulations over a region of interest with consistency in chemical mechanism and emissions used across scales.
 

Research Interests

 
My interests lie in using and developing coupled chemistry/climate models to investigate the impacts of short-lived pollutants in the troposphere on air quality, human health and climate. I have particular interest in aerosol evolution and properties: how these are driven by emission sources and secondary formation from gas-phase chemistry, how they feedback on regional meteorology and climate through radiative and cloud interactions, and how they further impact air quality and public health.
 
I did my PhD at the University of Manchester with Prof. Gordon McFiggans between 2010-2014. I worked on using and developing the Weather Research and Forecasting model with Chemistry (WRF-Chem), and evaluating it against observational data taken from the FAAM BAE-146 research aircraft, as part of two different research projects. The first (RONOCO) investigated the impact of nighttime nitrate chemistry over the UK, where I helped implement and test the CRI chemical mechanism and an N2O5 heterogeneous chemistry parameterisation in WRF-Chem. The second campaign studied aerosol processes resulting from biomass burning emissions in Amazonia, working in collaboration with Brazilian researchers to use and improve a fire emissions product, and evaluate model output against in-situ flight measurements.
 
Following my PhD, I worked as a postdoctoral research fellow in the Atmospheric Chemistry, Observations and Modeling Laboratory at the National Center for Atmospheric Research in Boulder, Colorado with Christine Wiedinmyer. Here, I continued to use WRF-Chem to investigate the impact of particulate emissions from residential solid fuel combustion, a leading source of household and ambient pollution in low-middle income countries, on air quality and health in China.

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
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
Molecular characterization of size-segregated organic aerosols in the urban boundary layer in wintertime Beijing by FT-ICR MS
Y Chen, G Beig, S Archer-Nicholls, W Drysdale, WJF Acton, D Lowe, B Nelson, J Lee, L Ran, Y Wang, Z Wu, SK Sahu, RS Sokhi, V Singh, R Gadi, C Nicholas Hewitt, E Nemitz, A Archibald, G McFiggans, O Wild
– Faraday Discuss
(2021)
226,
502
Minimal Climate Impacts From Short‐Lived Climate Forcers Following Emission Reductions Related to the COVID‐19 Pandemic
J Weber, Y Shin, J Staunton Sykes, S Archer Nicholls, N Abraham, A Archibald
– Geophysical Research Letters
(2020)
47,
e2020gl090326
CRI-HOM: A novel chemical mechanism for simulating highly oxygenated organic molecules (HOMs) in global chemistry–aerosol–climate models
J Weber, S Archer-Nicholls, P Griffiths, T Berndt, M Jenkin, H Gordon, C Knote, AT Archibald
– Atmospheric Chemistry and Physics
(2020)
20,
10889
Description and evaluation of the UKCA stratosphere–troposphere chemistry scheme (StratTrop vn 1.0) implemented in UKESM1
A T Archibald, F M O'Connor, N Luke Abraham, S Archer-Nicholls, M P Chipperfield, M Dalvi, G A Folberth, F Dennison, S S Dhomse, P T Griffiths, C Hardacre, A J Hewitt, R S Hill, C E Johnson, J Keeble, M O Köhler, O Morgenstern, J P Mulcahy, C Ordóñez, R J Pope, S T Rumbold, M R Russo, N H Savage, A Sellar, M Stringer, S T Turnock, O Wild, G Zeng
– Geoscientific Model Development
(2020)
13,
1223
Mitigation of PM<sub>2.5</sub> and ozone pollution in Delhi: a sensitivity study during the pre-monsoon period
Y Chen, O Wild, E Ryan, S Kumar Sahu, D Lowe, S Archer-Nicholls, Y Wang, G McFiggans, T Ansari, V Singh, RS Sokhi, A Archibald, G Beig
– Atmospheric Chemistry and Physics
(2020)
20,
499
Mitigation of PM2.5 and Ozone Pollution in Delhi: A Sensitivity Study during the Pre-monsoon period
Y Chen, O Wild, E Ryan, SK Sahu, D Lowe, S Archer-Nicholls, Y Wang, G McFiggans, T Ansari, V Singh, RS Sokhi, A Archibald, G Beig
– Atmospheric Chemistry and Physics Discussions
(2020)
1
New estimate of particulate emissions from Indonesian peat fires in 2015
L Kiely, DV Spracklen, C Wiedinmyer, L Conibear, CL Reddington, S Archer-Nicholls, D Lowe, SR Arnold, C Knote, M Firoz Khan, M Talib Latif, M Kuwata, S Hapsari Budisulistiorini, L Syaufina
– Atmospheric Chemistry and Physics
(2019)
19,
11105
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
(2019)
1
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Research Group

Email address

sa847@cam.ac.uk