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Department of Chemistry

 

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).

Publications

Spatial and Temporal Variations in SO2 and PM2.5 Levels Around Kīlauea Volcano, Hawai'i During 2007–2018
RCW Whitty, E Ilyinskaya, E Mason, PE Wieser, EJ Liu, A Schmidt, T Roberts, MA Pfeffer, B Brooks, TA Mather, M Edmonds, T Elias, DJ Schneider, C Oppenheimer, A Dybwad, PA Nadeau, C Kern
– Frontiers in Earth Science
(2020)
8,
36
A New Volcanic Stratospheric Sulfate Aerosol Forcing Emulator (EVA_H): Comparison With Interactive Stratospheric Aerosol Models
TJ Aubry, M Toohey, L Marshall, A Schmidt, AM Jellinek
– Journal of Geophysical Research: Atmospheres
(2020)
125,
ARTN e2019JD031303
Modeled and Observed Volcanic Aerosol Control on Stratospheric NOy and Cly
B Zambri, S Solomon, DE Kinnison, MJ Mills, A Schmidt, RR Neely, AE Bourassa, DA Degenstein, CZ Roth
– Journal of Geophysical Research: Atmospheres
(2019)
124,
10283
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
(2019)
19,
6351
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
(2019)
19,
4851
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
(2019)
124,
964
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
(2019)
124,
6750
Modeling the 1783-1784 Laki Eruption in Iceland: 2. Climate Impacts
B Zambri, A Robock, MJ Mills, A Schmidt
– Journal of Geophysical Research: Atmospheres
(2019)
124,
6770
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: Atmospheres
(2018)
123,
12
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
(2018)
45,
7835
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Research Group

Research Interest Group

Telephone number

01223 336369

Email address

as2737@cam.ac.uk