New seasonal pattern of pollution emerges from changing North American wildfires.
New seasonal pattern of pollution emerges from changing North American wildfires.
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DOI：
10.1038/s41467-022-29623-8
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发表时间：
2022-04-19
影响因子：
16.6
通讯作者：
Magzamen, Sheryl
中科院分区：
文献类型：
--
作者：
Buchholz, Rebecca R.;Park, Mijeong;Worden, Helen M.;Tang, Wenfu;Edwards, David P.;Gaubert, Benjamin;Deeter, Merritt N.;Sullivan, Thomas;Ru, Muye;Chin, Mian;Levy, Robert C.;Zheng, Bo;Magzamen, Sheryl
据了解，近几十年来，太平洋西北地区野火造成的排放量不断增加，抵消了北美地区人为气溶胶污染的减少。由于预计在气候变化加速的情况下，太平洋西北地区的野火会扩大，因此了解当地和运输对北美空气污染的贡献至关重要。在这里，我们发现太平洋西北部野火排放的一氧化碳相应增加，并观察到对当地和顺风空气污染的显著影响。2002 - 2018年，太平洋西北部大气一氧化碳丰度在8月份增加，而其他月份一氧化碳含量则下降，从而改变了季节模式。这些季节性模式变化延伸到北美的大片地区，到美国中部和北美东北部地区，表明运输的野火污染可能会影响数百万人的健康。今年8月，太平洋西北地区野火不断增加的排放量增加了大气中的一氧化碳含量，随着北美大片地区空气质量的季节性变化，这引发了人们对潜在健康影响的质疑。
Rising emissions from wildfires over recent decades in the Pacific Northwest are known to counteract the reductions in human-produced aerosol pollution over North America. Since amplified Pacific Northwest wildfires are predicted under accelerating climate change, it is essential to understand both local and transported contributions to air pollution in North America. Here, we find corresponding increases for carbon monoxide emitted from the Pacific Northwest wildfires and observe significant impacts on both local and down-wind air pollution. Between 2002 and 2018, the Pacific Northwest atmospheric carbon monoxide abundance increased in August, while other months showed decreasing carbon monoxide, so modifying the seasonal pattern. These seasonal pattern changes extend over large regions of North America, to the Central USA and Northeast North America regions, indicating that transported wildfire pollution could potentially impact the health of millions of people. Growing emissions from Pacific Northwest wildfires have increased atmospheric carbon monoxide in August, raising questions about potential health impacts as the seasonal pattern of air quality changes for large regions of North America.
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DOI：
10.1073/pnas.1617394114
发表时间：
2017-03-14
影响因子：
11.1
作者：
Balch JK;Bradley BA;Abatzoglou JT;Nagy RC;Fusco EJ;Mahood AL
通讯作者：
Mahood AL
影响因子：
6.7
作者：
Goss, Michael;Swain, Daniel L.;Diffenbaugh, Noah S.
通讯作者：
Diffenbaugh, Noah S.
影响因子：
64.8
作者：
CRUTZEN, PJ;HEIDT, LE;SEILER, W
通讯作者：
SEILER, W
影响因子：
4.8
作者：
Gan, Ryan W.;Ford, Bonne;Magzamen, Sheryl
通讯作者：
Magzamen, Sheryl
影响因子：
4.4
作者：
Holloway, T;Levy, H;Kasibhatla, P
通讯作者：
Kasibhatla, P