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Yusuf Hamied Department of Chemistry


University Lecturer

Environmental and climatic effects of volcanic gases and aerosols

I am an Interdisciplinary Lecturer in Climate Modelling jointly affiliated with the Departments of Chemistry and Geography. I combine expertise in atmospheric science, climate modelling, and volcanology to advance the current understanding of volcanic impacts and hazards. In particular, I investigate the impact of volcanism on atmospheric chemistry, climate, air quality, human health, ecosystems and aviation using a wide range of atmospheric models and volcanological datasets. I am particularly interested in continuously degassing volcanoes and effusive Icelandic volcanic eruptions and their effects on air quality and climate. I am convinced that these eruptions serve as a perfect natural lab and can help better understand and quantify aerosol-cloud interactions.

Recent research

I have extensively studied the most recent Icelandic eruption at Holuhraun (Bárðarbunga volcano). Starting in August 2014, Holuhraun erupted effusively for 6 months and emitted up to nine times as much sulphur dioxide per day as all European industry combined, which led to a measureable episodic degradation of air quality across Northern Europe in September 2014 (see Schmidt et al., 2015). Combining satellite observations with numerical modelling, we were also able to demonstrate that the eruption had a discernable effect on the brightness of low-level clouds over the North Atlantic (Gettelman et al., 2015; Malavelle et al., 2017).


Effects of forcing differences and initial conditions on inter-model agreement in the VolMIP volc-pinatubo-full experiment
D Zanchettin, C Timmreck, M Khodri, A Schmidt, M Toohey, M Abe, S Bekki, J Cole, SW Fang, W Feng, G Hegerl, B Johnson, N Lebas, AN Legrande, GW Mann, L Marshall, L Rieger, A Robock, S Rubinetti, K Tsigaridis, H Weierbach
– Geoscientific Model Development
The 2019 Raikoke volcanic eruption - Part 2: Particle-phase dispersion and concurrent wildfire smoke emissions
MJ Osborne, J De Leeuw, C Witham, A Schmidt, F Beckett, N Kristiansen, J Buxmann, C Saint, EJ Welton, J Fochesatto, AR Gomes, U Bundke, A Petzold, F Marenco, J Haywood
– Atmospheric Chemistry and Physics
Assessing the effectiveness of low-cost air quality monitors for identifying volcanic SO2 and PM downwind from Masaya volcano, Nicaragua
RCW Whitty, MA Pfeffer, E Ilyinskaya, TJ Roberts, A Schmidt, S Barsotti, W Strauch, LR Crilley, FD Pope, H Bellanger, E Mendoza, TA Mather, EJ Liu, N Peters, IA Taylor, H Francis, XH Leiva, D Lynch, S Nobert, P Baxter
– Volcanica
Opportunistic experiments to constrain aerosol effective radiative forcing
MW Christensen, A Gettelman, J Cermak, G Dagan, M Diamond, A Douglas, G Feingold, F Glassmeier, T Goren, DP Grosvenor, E Gryspeerdt, R Kahn, Z Li, P-L Ma, F Malavelle, IL McCoy, DT McCoy, G McFarquhar, J Mülmenstädt, S Pal, A Possner, A Povey, J Quaas, D Rosenfeld, A Schmidt, R Schrödner, A Sorooshian, P Stier, V Toll, D Watson-Parris, R Wood, M Yang, T Yuan
– Atmos Chem Phys
Volcanic emissions, aerosol processes, and climatic effects
A Schmidt, S Carn
Volcanic air pollution and human health: recent advances and future directions
C Stewart, DE Damby, CJ Horwell, T Elias, E Ilyinskaya, I Tomašek, BM Longo, A Schmidt, HK Carlsen, E Mason, PJ Baxter, S Cronin, C Witham
– Bulletin of Volcanology
The Independent Volcanic Eruption Source Parameter Archive (IVESPA, version 1.0): A new observational database to support explosive eruptive column model validation and development
TJ Aubry, S Engwell, C Bonadonna, G Carazzo, S Scollo, AR Van Eaton, IA Taylor, D Jessop, J Eychenne, M Gouhier, LG Mastin, KL Wallace, S Biass, M Bursik, RG Grainger, AM Jellinek, A Schmidt
– Journal of Volcanology and Geothermal Research
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
– Nat Commun
The 2019 Raikoke volcanic eruption part 2: Particle phase dispersion and concurrent wildfire smoke emissions
MJ Osborne, J de Leeuw, C Witham, A Schmidt, F Beckett, N Kristiansen, J Buxmann, C Saint, EJ Welton, J Fochesatto, AR Gomes, U Bundke, A Petzold, F Marenco, J Haywood
Global climate disruption and regional climate shelters after the Toba supereruption.
BA Black, J-F Lamarque, DR Marsh, A Schmidt, CG Bardeen
– Proceedings of the National Academy of Sciences
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Research Group

Research Interest Group

Telephone number

01223 336369

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