气候变化领域集成服务门户(CCPortal): Severe Californian wildfires in November 2018 observed from space: The carbon monoxide perspective

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DOI	10.5194/acp-20-3317-2020
	Severe Californian wildfires in November 2018 observed from space: The carbon monoxide perspective
	Schneising O.; Buchwitz M.; Reuter M.; Bovensmann H.; Burrows J.P.
发表日期	2020
ISSN	1680-7316
起始页码	3317
结束页码	3332
卷号	20 期号:6
英文摘要	Due to proceeding climate change, some regions such as California face rising weather extremes with dry periods becoming warmer and drier, entailing the risk that wildfires and associated air pollution episodes will continue to increase. November 2018 turned into one of the most severe wildfire episodes on record in California, with two particularly destructive wildfires spreading concurrently through the north and the south of the state. Both fires ignited at the wildland-urban interface, causing many civilian fatalities and forcing the total evacuation of several cities and communities. Here we demonstrate that the inherent carbon monoxide (CO) emissions of the wildfires and subsequent transport can be observed from space by analysing radiance measurements of the TROPOspheric Monitoring Instrument (TROPOMI) onboard the Sentinel-5 Precursor satellite in the shortwave infrared spectral range. From the determined CO distribution we assess the corresponding air quality burden in major Californian cities caused by the fires and discuss the associated uncertainties. As a result of the prevailing wind conditions, the largest CO load during the first days of the fires is found in Sacramento and San Francisco, with city area averages reaching boundary layer concentration anomalies of about 2.5 mgCOm-3. Even the most polluted city scenes likely comply with the national ambient air quality standards (10 mgCOm-3 with 8 h averaging time). This finding based on dense daily recurrent satellite monitoring is consistent with isolated ground-based air quality measurements. © Author(s) 2020.
语种	英语
scopus关键词	air quality; ambient air; atmospheric chemistry; boundary layer; carbon emission; carbon monoxide; concentration (composition); Sentinel; troposphere; wildfire; California; Sacramento; San Francisco [California]; United States
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141467
作者单位	Institute of Environmental Physics (IUP), University of Bremen FB1, Bremen, Germany
推荐引用方式 GB/T 7714	Schneising O.,Buchwitz M.,Reuter M.,et al. Severe Californian wildfires in November 2018 observed from space: The carbon monoxide perspective[J],2020,20(6).
APA	Schneising O.,Buchwitz M.,Reuter M.,Bovensmann H.,&Burrows J.P..(2020).Severe Californian wildfires in November 2018 observed from space: The carbon monoxide perspective.Atmospheric Chemistry and Physics,20(6).
MLA	Schneising O.,et al."Severe Californian wildfires in November 2018 observed from space: The carbon monoxide perspective".Atmospheric Chemistry and Physics 20.6(2020).