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Discussion papers
https://doi.org/10.5194/acp-2019-147
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2019-147
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 Mar 2019

Research article | 20 Mar 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Exploring the impacts of anthropogenic emission sectors on PM2.5 and human health in South and East Asia

Carly L. Reddington1, Luke Conibear1, Christoph Knote2, Ben J. Silver1, Steve R. Arnold1, and Dominick V. Spracklen1 Carly L. Reddington et al.
  • 1Institute for Climate & Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, UK
  • 2Meteorological Institute, LMU Munich, Munich, Germany

Abstract. To improve poor air quality in Asia and inform effective emission-reduction strategies, it is vital to understand the contributions of different pollution sources and their associated human health burdens. In this study, we use the WRF-Chem regional atmospheric model to explore the air quality and human health benefits of eliminating emissions from seven different anthropogenic sectors (transport, industry, shipping, agriculture, energy generation, residential combustion and open biomass burning) over South and East Asia in 2014. We evaluate WRF-Chem against measurements from air quality monitoring stations across the region and find the model captures the spatial distribution and magnitude of PM2.5 (particulate matter < 2.5 µm diameter). We find that eliminating emissions from residential energy use, industry or open biomass burning yield the largest reductions in population-weighted PM2.5 concentrations across the region. The largest human health benefit is achieved by eliminating either residential or industrial emissions, averting 467 000 (409 000–542 000) or 283 000 (95UI: 226 000–358 000) annual premature mortalities, respectively in India, China and Southeast Asia; with fire prevention averting 28 000 (95UI: 24 000–32 000) annual premature mortalities across the region. We compare our results to previous sector-specific emission studies. Across these studies, residential emissions are the dominant cause of particulate pollution in India, with a multi-model mean contribution of 42 % to population-weighted annual mean PM2.5. Residential and industrial emissions cause the dominant contributions in China, with multi-model mean contributions of 29 % for both sectors to population-weighted annual mean PM2.5. Future work should focus on identifying the most effective options within the residential, industrial and open biomass burning emission sectors to improve air quality across South and East Asia.

Carly L. Reddington et al.
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Short summary
We use a high-resolution model over South and East Asia to explore air quality and human health benefits of eliminating emissions from seven manmade pollution sources. We find that preventing emissions from either residential energy use, industry or open biomass burning yields the largest reductions in ground level particulate matter pollution and its associated disease burden over this region. We also summarise previous estimates of the source-specific disease burden in China and India.
We use a high-resolution model over South and East Asia to explore air quality and human health...
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