id:"swepub:oai:lup.lub.lu.se:62ae7279-8075-4c4a-8444-f09da148b14d"
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- Knorr, WolfgangLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science,Karlsruhe Institute of Technology (författare)
Wildfire air pollution hazard during the 21st century
- Artikel/kapitelEngelska2017
Förlag, utgivningsår, omfång ...
- 2017-07-31
- Copernicus GmbH,2017
- 14 s.
Nummerbeteckningar
- LIBRIS-ID:oai:lup.lub.lu.se:62ae7279-8075-4c4a-8444-f09da148b14d
- https://lup.lub.lu.se/record/62ae7279-8075-4c4a-8444-f09da148b14dURI
- https://doi.org/10.5194/acp-17-9223-2017DOI
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- Språk:engelska
- Sammanfattning på:engelska
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- Wildfires pose a significant risk to human livelihoods and are a substantial health hazard due to emissions of toxic smoke. Previous studies have shown that climate change, increasing atmospheric CO2, and human demographic dynamics can lead to substantially altered wildfire risk in the future, with fire activity increasing in some regions and decreasing in others. The present study re-examines these results from the perspective of air pollution risk, focussing on emissions of airborne particulate matter (PM2. 5), combining an existing ensemble of simulations using a coupled fire-dynamic vegetation model with current observation-based estimates of wildfire emissions and simulations with a chemical transport model. Currently, wildfire PM2. 5 emissions exceed those from anthropogenic sources in large parts of the world. We further analyse two extreme sets of future wildfire emissions in a socio-economic, demographic climate change context and compare them to anthropogenic emission scenarios reflecting current and ambitious air pollution legislation. In most regions of the world, ambitious reductions of anthropogenic air pollutant emissions have the potential to limit mean annual pollutant PM2. 5 levels to comply with World Health Organization (WHO) air quality guidelines for PM2. 5. Worst-case future wildfire emissions are not likely to interfere with these annual goals, largely due to fire seasonality, as well as a tendency of wildfire sources to be situated in areas of intermediate population density, as opposed to anthropogenic sources that tend to be highest at the highest population densities. However, during the high-fire season, we find many regions where future PM2. 5 pollution levels can reach dangerous levels even for a scenario of aggressive reduction of anthropogenic emissions.
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- Dentener, FrankEuropean Commission Joint Research Centre, Ispra (författare)
- Lamarque, Jean FrançoisNational Center for Atmospheric Research (författare)
- Jiang, LeiwenShanghai University,National Center for Atmospheric Research (författare)
- Arneth, AlmutKarlsruhe Institute of Technology(Swepub:lu)nate-aar (författare)
- Institutionen för naturgeografi och ekosystemvetenskapNaturvetenskapliga fakulteten (creator_code:org_t)
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- Ingår i:Atmospheric Chemistry and Physics: Copernicus GmbH17:14, s. 9223-92361680-73161680-7324
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