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Atmospheric Chemistry Research Group

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).


Northern Hemisphere continental winter warming following the 1991 Mt. Pinatubo eruption: reconciling models and observations
LM Polvani, A Banerjee, A Schmidt
– Atmospheric Chemistry and Physics
Satellite-derived sulfur dioxide (SO2) emissions from the 2014-2015 Holuhraun eruption (Iceland)
E Carboni, TA Mather, A Schmidt, RG Grainger, MA Pfeffer, I Ialongo, N Theys
– Atmospheric Chemistry and Physics
Exploring How Eruption Source Parameters Affect Volcanic Radiative Forcing Using Statistical Emulation
L Marshall, JS Johnson, GW Mann, L Lee, SS Dhomse, L Regayre, M Yoshioka, KS Carslaw, A Schmidt
– Journal of Geophysical Research: Atmospheres
Modeling the 1783–1784 Laki Eruption in Iceland: 2. Climate Impacts
B Zambri, A Robock, MJ Mills, A Schmidt
– Journal of Geophysical Research: Atmospheres
Modeling the 1783–1784 Laki Eruption in Iceland: 1. Aerosol Evolution and Global Stratospheric Circulation Impacts
B Zambri, A Robock, MJ Mills, A Schmidt
– Journal of Geophysical Research: Atmospheres
Volcanic Radiative Forcing From 1979 to 2015
A Schmidt, MJ Mills, S Ghan, JM Gregory, RP Allan, T Andrews, CG Bardeen, A Conley, PM Forster, A Gettelman, RW Portmann, S Solomon, OB Toon
– Journal of Geophysical Research
On the Role of Heterogeneous Chemistry in Ozone Depletion and Recovery
C Wilka, K Shah, K Stone, S Solomon, D Kinnison, M Mills, A Schmidt, RR Neely
– Geophysical Research Letters
The Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP): motivation and experimental design
C Timmreck, GW Mann, V Aquila, R Hommel, LA Lee, A Schmidt, C Brühl, S Carn, M Chin, SS Dhomse, T Diehl, JM English, MJ Mills, R Neely, J Sheng, M Toohey, D Weisenstein
– Geoscientific Model Development
Climatic control on Icelandic volcanic activity during the mid-Holocene
GT Swindles, IP Savov, A Schmidt, A Hooper, CB Connor, JL Carrivick
– Geology
Aerosol midlatitude cyclone indirect effects in observations and high-resolution simulations
DT McCoy, PR Field, A Schmidt, DP Grosvenor, FAM Bender, BJ Shipway, AA Hill, JM Wilkinson, GS Elsaesser
– Atmospheric Chemistry and Physics
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Head of group

Research Interest Group

Telephone number

01223 336369

Email address