气候变化领域集成服务门户(CCPortal): Microwave Limb Sounder (MLS) observations of biomass burning products in the stratosphere from Canadian forest fires in August 2017

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DOI	10.5194/acp-21-16645-2021
	Microwave Limb Sounder (MLS) observations of biomass burning products in the stratosphere from Canadian forest fires in August 2017
	Pumphrey H.C.; Schwartz M.J.; Santee M.L.; Kablick Iii G.P.; Fromm M.D.; Livesey N.J.
发表日期	2021
ISSN	1680-7316
起始页码	16645
结束页码	16659
卷号	21 期号:22
英文摘要	Forest fires in British Columbia in August 2017 caused a pyrocumulonimbus event that injected a polluted air mass into the lower stratosphere. The Microwave Limb Sounder (MLS) on the Aura satellite first observed the polluted air mass on 14 August 2017 and continued to observe it for 60g d (100g d in water vapour). We estimate the mass of CO injected into the stratosphere to be 2400g Gg. Events in which a fire injects its burning products directly into the stratosphere are rare: This is the third of four such events in the 16 years since the launch of Aura, the second largest of the four events, and the only one in the Northern Hemisphere. The other three events occurred in Australia in December 2006, February 2009 and from December 2019 to January 2020. Unlike the 2006 and 2009 events, but like the 2019-2020 event, the polluted air mass described here had a clearly elevated water vapour content: between 2.5 and 5 times greater than that in the surrounding atmosphere. We describe the evolution of the polluted air mass, showing that it rose to an altitude of about 24g km (31g hPa) and divided into several identifiable parts. In addition to CO and H2O, we observe enhanced amounts of HCN, CH3CN, CH3Cl and CH3OH with mixing ratios in the range to be expected from a variety of measurements in other biomass burning plumes. We use back trajectories and plume-dispersion modelling to demonstrate that the pollutants observed by MLS originated in the British Columbia fires, the likeliest source being at 53.2gN, 121.8gW at 05:20g UTC on 13 August 2017. © Copyright:
语种	英语
scopus关键词	Columbia
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/246442
作者单位	School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom; Nasa Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Pumphrey H.C.,Schwartz M.J.,Santee M.L.,et al. Microwave Limb Sounder (MLS) observations of biomass burning products in the stratosphere from Canadian forest fires in August 2017[J],2021,21(22).
APA	Pumphrey H.C.,Schwartz M.J.,Santee M.L.,Kablick Iii G.P.,Fromm M.D.,&Livesey N.J..(2021).Microwave Limb Sounder (MLS) observations of biomass burning products in the stratosphere from Canadian forest fires in August 2017.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(22).
MLA	Pumphrey H.C.,et al."Microwave Limb Sounder (MLS) observations of biomass burning products in the stratosphere from Canadian forest fires in August 2017".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.22(2021).