Imperial College London
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DrMatthewKasoar

Faculty of Natural Sciences, Department of Physics

Research Associate
 
 
 
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Contact

 

m.kasoar12

 
 
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Location

 

062ChemistrySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Shawki:2018:10.1029/2018JD028623,
author = {Shawki, D and Voulgarakis, A and Chakraborty, A and Kasoar, MR and Srinivasan, JS},
doi = {10.1029/2018JD028623},
journal = {Journal of Geophysical Research},
pages = {11585--11601},
title = {The South Asian monsoon response to remote aerosols: global and regional mechanisms},
url = {http://dx.doi.org/10.1029/2018JD028623},
volume = {123},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The South Asian summer monsoon has been suggested to be influenced by atmospheric aerosols, and this influence can be the result of either local or remote emissions. We have used the Hadley Centre Global Environment Model Version 3 (HadGEM3) coupled atmosphereocean climate model to investigate for the first time the centennialscale South Asian precipitation response to emissions of sulfur dioxide (SO2), the dominant anthropogenic precursor of sulfate aerosol, from different midlatitude regions. Despite the localized nature of the regional heating that results from removing SO2 emissions, all experiments featured a similar largescale precipitation response over South Asia, driven by oceanmodulated changes in the net crossequatorial heat transport and an opposing crossequatorial northward moisture transport. The effects are linearly additive, with the sum of the responses from the experiments where SO2 is removed from the United States, Europe, and East Asia resembling the response seen in the experiment where emissions are removed from the northern midlatitudes as a whole, but with East Asia being the largest contributor, even per unit of emission or topofatmosphere radiative forcing. This stems from the fact that East Asian emissions can more easily influence regional landsea thermal contrasts and sea level pressure differences that drive the monsoon circulation, compared to emissions from more remote regions. Our results suggest that radiative effects of remote pollution should not be neglected when examining changes in South Asian climate and that and it is important to examine such effects in coupled oceanatmosphere modeling frameworks.
AU  - Shawki,D
AU  - Voulgarakis,A
AU  - Chakraborty,A
AU  - Kasoar,MR
AU  - Srinivasan,JS
DO  - 10.1029/2018JD028623
EP  - 11601
PY  - 2018///
SN  - 0148-0227
SP  - 11585
TI  - The South Asian monsoon response to remote aerosols: global and regional mechanisms
T2  - Journal of Geophysical Research
UR  - http://dx.doi.org/10.1029/2018JD028623
UR  - http://hdl.handle.net/10044/1/64590
VL  - 123
ER  -
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