El Niño and health risks from landscape fire emissions in Southeast Asia.

El Niño and health risks from landscape fire emissions in Southeast Asia.
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DOI:
10.1038/nclimate1658
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发表时间:
2013
影响因子:
30.7
通讯作者:
Faluvegi, Greg
Faluvegi, Greg
中科院分区:
地球科学1区
文献类型:
--
作者:
Marlier, Miriam E.;DeFries, Ruth S.;Voulgarakis, Apostolos;Kinney, Patrick L.;Randerson, James T.;Shindell, Drew T.;Chen, Yang;Faluvegi, Greg

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Emissions from landscape fires affect both climate and air quality. In this study, we combine satellite-derived fire estimates and atmospheric modeling to quantify health effects from fire emissions in Southeast Asia from 1997 to 2006. This region has large interannual variability in fire activity due to coupling between El Niño-induced droughts and anthropogenic land use change. We show that during strong El Niño years, fires contribute up to 200 μg/m3 and 50 ppb in annual average fine particulate matter (PM2.5) and ozone (O3) surface concentrations near fire sources, respectively. This corresponds to a fire contribution of 200 additional days per year that exceed the World Health Organization (WHO) 50 μg/m3 24-hour PM2.5 interim target (IT-2) and an estimated 10,800 (6,800–14,300) person (~2%) annual increase in regional adult cardiovascular mortality. Our results indicate that reducing regional deforestation and degradation fires would improve public health along with widely established benefits from reducing carbon emissions, preserving biodiversity, and maintaining ecosystem services.
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