气候变化领域集成服务门户(CCPortal): Record-breaking aerosol levels explained by smoke injection into the stratosphere

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DOI	10.1126/science.abe1415
	Record-breaking aerosol levels explained by smoke injection into the stratosphere
	Hirsch E.; Koren I.
发表日期	2021
ISSN	0036-8075
起始页码	1269
结束页码	1274
卷号	371 期号:6535
英文摘要	The early months of 2020 showed record-breaking levels of aerosol optical depth (AOD) over the Southern Hemisphere (SH). Apart from the tropics, monthly AOD values over most of the SH exceeded the average by more than three standard deviations. This anomalous AOD is attributed to a combination of the intensity and location of the Australian bushfires. The fires took place south enough, where the tropopause altitude is relatively low, within the mid-latitude cyclone belt. This location allowed for deep convection over and downwind of the fires, which transported the smoke to the stratosphere, where its lifetime is an order of magnitude longer than it would have been in the lower atmosphere. The lower bound of the stratospheric smoke mass in January 2020 was ~2.1 ± 1 teragrams, which lead to cooling by more than 1.0 ± 0.6 watts per square meter over cloud-free oceanic areas. © 2021 American Association for the Advancement of Science. All rights reserved.
英文关键词	aerosol; bushfire; cyclone; optical depth; smoke; Southern Hemisphere; stratosphere; tropopause; aerosol; altitude; article; cooling; latitude; optical depth; smoke; Southern Hemisphere; stratosphere; thermodynamics; tropics; wildfire; Australia
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244016
作者单位	Environmental Sciences Division, Israel Institute for Biological Research, Nes-Ziona, 7404801, Israel; Department of Earth and Planetary Sciences, Weizmann Institute, Rehovot, 76100, Israel
推荐引用方式 GB/T 7714	Hirsch E.,Koren I.. Record-breaking aerosol levels explained by smoke injection into the stratosphere[J],2021,371(6535).
APA	Hirsch E.,&Koren I..(2021).Record-breaking aerosol levels explained by smoke injection into the stratosphere.Science,371(6535).
MLA	Hirsch E.,et al."Record-breaking aerosol levels explained by smoke injection into the stratosphere".Science 371.6535(2021).