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Yusuf Hamied Department of Chemistry

 

I am interested in interactions between the biosphere and climate, mediated via the chemical oxidation of biogenic volatile organic compouds (BVOCs). BVOCs affect the atmosphere's oxidising capacity and thus methane lifetime (with consequences for the Earth's radiative budget) and contribute to aerosol formation and growth. Aerosols scatter radiation and aid cloud formation thus cooling the atmosphere. These interactions have the potential to cause feedback loops which could oppose or exacerbate climate change. As well as climate model analysis, I am also doing research on the fundamental chemistry behind the formation of the smallest particles, focusing on the interactions of peroxy radicals from various BVOCS, and incorporating this into the global climate models UKCA and UKESM. I have been involved in the 6th Coupled Model Intercomparison Project (CMIP6) looking at biogeochemcial feedbacks which will contribute to the evidence base used by the IPCC.

 

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
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
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
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)
Climate-driven chemistry and aerosol feedbacks in CMIP6 Earth system models
G Thornhill, W Collins, D Olivié, R B. Skeie, A Archibald, S Bauer, R Checa-Garcia, S Fiedler, G Folberth, A Gjermundsen, L Horowitz, JF Lamarque, M Michou, J Mulcahy, P Nabat, V Naik, F M. O'Connor, F Paulot, M Schulz, C E. Scott, R Séférian, C Smith, T Takemura, S Tilmes, K Tsigaridis, J Weber
– Atmospheric Chemistry and Physics
(2021)
21,
1105
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
Afforestation’s potential to help Cambridgeshire reach net-zero by 2050
J Weber
– Cambridge Journal of Science and Policy
1,
e5820974944
Incorporation and evaluation of the CRI v2.2 chemical mechanism in UKESM1: An alternative mechanism with updated isoprene chemistry for investigating the influence of BVOCs on atmospheric composition and climate. 
J Weber, S Archer-Nicholls, NL Abraham, YM Shin, T Bannan, R Schwantes, M Jenkin, A Khan, AT Archibald
Linking Peroxy Radical Chemistry to Global Climate: The Common Representatives Intermediates Chemical Mechanism in the UK Earth System Model
S Archer-Nicholls, JM Weber, NL Abraham, MR Russo, C Knote, PT Griffiths, D Lowe, S Utembe, F O'Connor, O Wild, T Berndt, ME Jenkin, AT Archibald