气候变化领域集成服务门户(CCPortal): Quantifying the Source Term and Uniqueness of the August 12, 2017 Pacific Northwest PyroCb Event

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DOI	10.1029/2021JD034928
	Quantifying the Source Term and Uniqueness of the August 12, 2017 Pacific Northwest PyroCb Event
	Fromm M.D.; Kablick G.P.; Peterson D.A.; Kahn R.A.; Flower V.J.B.; Seftor C.J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:13
英文摘要	A pyrocumulonimbus (pyroCb) firestorm event known as the Pacific Northwest Event (PNE), on August 12, 2017, is examined with a focus on newly reported details of the pyroconvective injections, transport pathway, and young-plume altitude. Because PNE and a subsequent pyroCb event in Australia have been compared to classic stratospheric volcanic plumes, a prime motivation for this work was to exhaustively characterize the beginning of PNE, and to show how it compared to major stratospheric plumes from prior events. We find and report direct evidence that PNE pyroconvection involved seven discrete storms, at least two of which injected a plume to at least 13.7 km, up to 2.5 km above the local tropopause. The morning after, stratospheric smoke was observed above the tropopause to altitudes as great as 16 km. We also quantify for the first time that PNE was preceded by a pyroCb injection one day earlier, generating a plume noteworthy on its own but overwhelmed by the PNE smoke. Our comparison of PNE with five earlier pyroCb events reveals that PNE was not distinctive with respect to its injection and nascent plume height. However, it did produce the greatest known ultraviolet absorbing aerosol index and plume longevity as of 2017. © 2021. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	pyroconvection; smoke; stratosphere
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185116
作者单位	US Naval Research Laboratory, Washington, DC, United States; US Naval Research Laboratory, Monterey, CA, United States; Climate and Radiation Lab, Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Universities Space Research Association, Columbia, MD, United States; Science Systems & Applications, Inc., Lanham, MD, United States
推荐引用方式 GB/T 7714	Fromm M.D.,Kablick G.P.,Peterson D.A.,et al. Quantifying the Source Term and Uniqueness of the August 12, 2017 Pacific Northwest PyroCb Event[J],2021,126(13).
APA	Fromm M.D.,Kablick G.P.,Peterson D.A.,Kahn R.A.,Flower V.J.B.,&Seftor C.J..(2021).Quantifying the Source Term and Uniqueness of the August 12, 2017 Pacific Northwest PyroCb Event.Journal of Geophysical Research: Atmospheres,126(13).
MLA	Fromm M.D.,et al."Quantifying the Source Term and Uniqueness of the August 12, 2017 Pacific Northwest PyroCb Event".Journal of Geophysical Research: Atmospheres 126.13(2021).