气候变化领域集成服务门户(CCPortal): Stratospheric Injection of Massive Smoke Plume From Canadian Boreal Fires in 2017 as Seen by DSCOVR-EPIC, CALIOP, and OMPS-LP Observations

CCPortal

DOI	10.1029/2020JD032579
	Stratospheric Injection of Massive Smoke Plume From Canadian Boreal Fires in 2017 as Seen by DSCOVR-EPIC, CALIOP, and OMPS-LP Observations
	Torres O.; Bhartia P.K.; Taha G.; Jethva H.; Das S.; Colarco P.; Krotkov N.; Omar A.; Ahn C.
发表日期	2020
ISSN	2169897X
卷号	125 期号:10
英文摘要	A carbonaceous aerosol plume associated with wildfires in British Columbia in August 2017 reached the stratosphere a few days following the fires onset. The Earth Polychromatic Imaging Camera (EPIC) sensor onboard the Deep Space Climate Observatory (DSCOVR) satellite observed the spatial and temporal evolution of the plume for about 6 weeks. EPIC's near-hourly observations of the Earth's sunlit disk allowed for monitoring the smoke plume several times per day. High ultraviolet aerosol index values pointed to the presence of an aerosol layer in the upper troposphere and lower stratosphere, confirmed with Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) lidar observations. EPIC aerosol optical depth retrievals and CALIOP information on layer height were used to estimate the stratospheric portion of the aerosol mass, reaching a maximum of 268 ± 86 Kt 3 days after the onset of the wildfires. About 10% of this aerosol mass reached the stratosphere on 13 August, whereas the remaining 90% did so over the following 2 days. Observed daytime and inferred nighttime rates of stratospheric aerosol mass increase showed a more rapid daytime increase, consistent with variability in diurnal insolation, suggesting that solar radiation driven processes may have contributed to the observed stratospheric aerosol mass increase. Global modeling results support the possible role of diabatic aerosol self-lofting. Ozone Mapping and Profiler Suite Limb Profiler (OMPS-LP) aerosol retrievals showed the spread of stratospheric aerosols in the Northern Hemisphere, reaching peak concentration between October 2017 and January 2018, when about half the Northern Hemisphere experienced a detectable enhancement of stratospheric aerosols with respect to preinjection conditions. The lifetime and aerosol mass of this smoke event were comparable to those of a moderate volcanic eruption. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	aerosols; boreal fires; pyroCb; remote sensing; satellite; 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/186001
作者单位	NASA Goddard Space Flight Center, Greenbelt, MD, United States; USRA-GESTAR, Greenbelt, MD, United States; USRA-NASA Postdoctoral Program, Columbia, MD, United States; NASA Langley Research Center, Hampton, VA, United States; Science Systems and Applications Inc., Lanham, MD, United States
推荐引用方式 GB/T 7714	Torres O.,Bhartia P.K.,Taha G.,et al. Stratospheric Injection of Massive Smoke Plume From Canadian Boreal Fires in 2017 as Seen by DSCOVR-EPIC, CALIOP, and OMPS-LP Observations[J],2020,125(10).
APA	Torres O..,Bhartia P.K..,Taha G..,Jethva H..,Das S..,...&Ahn C..(2020).Stratospheric Injection of Massive Smoke Plume From Canadian Boreal Fires in 2017 as Seen by DSCOVR-EPIC, CALIOP, and OMPS-LP Observations.Journal of Geophysical Research: Atmospheres,125(10).
MLA	Torres O.,et al."Stratospheric Injection of Massive Smoke Plume From Canadian Boreal Fires in 2017 as Seen by DSCOVR-EPIC, CALIOP, and OMPS-LP Observations".Journal of Geophysical Research: Atmospheres 125.10(2020).