气候变化领域集成服务门户(CCPortal): The Evolution of the Wave-One Ozone Maximum During the 2017 LASIC Field Campaign at Ascension Island

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DOI	10.1029/2020JD033972
	The Evolution of the Wave-One Ozone Maximum During the 2017 LASIC Field Campaign at Ascension Island
	Jenkins G.S.; de Castro V.; Cunha B.; Fontanez I.; Holzworth R.
发表日期	2021
ISSN	2169897X
卷号	126 期号:10
英文摘要	Aerosols associated with biomass burning sources in Southern Africa were the focus during the LASIC, CLARIFY, and ORACLES field intensives across the South Tropical Atlantic in August and September of 2017. During this period, we launched 20 ozonesondes to produce a high temporal resolution data set to complement the once per week regular ozonesondes to investigate episodes of elevated O3 mixing ratios from westward moving biomass burning from Southern Africa. Vertical profiles of tropospheric ozone reveal the presence of elevated ozone mixing ratios due to biomass burning in the lower to middle troposphere during this period. The collected data show ozone mixing ratios exceeded 80 ppb between 850 and 550 hPa when the origin of air was Southern Africa (Angola and regions to east). We also find elevated O3 mixing ratios in the 500–300 hPa layer, which could be linked to production of O3 via lightning (LNOX) from deep convection over Africa, which is transported into the Southern Hemisphere by the Tropical Easterly Jet (TEJ). Low-ozone mixing ratios in the lower troposphere are associated with transport from the Northern Tropical Atlantic, and there is evidence of pollution from South America. Surprisingly, we find limited observations of African Easterly Jet-South (AEJ-S) in its strong phase at Ascension Island, but elevated O3 mixing ratios are found when it does occur. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	biomass burning; Ozone; South Atlantic; Southern Africa; Wave One
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/185203
作者单位	Department of Meteorology and Atmospheric Sciences, Pennsylvania State University, University Park, PA, United States; RM Climate Research Facility, Hamelmann Communication, Pagosa Springs, CO, United States; Eastern North Atlantic - ARM Facility, Estrada Nova do Aeroporto, Graciosa Azores, Portugal; Physics Department, University of Puerto Rico at Mayagüez Campus, Mayagüez, Puerto Rico; Department of Earth and Space Sciences, and Physic, University of Washington, Washington, DC, United States
推荐引用方式 GB/T 7714	Jenkins G.S.,de Castro V.,Cunha B.,et al. The Evolution of the Wave-One Ozone Maximum During the 2017 LASIC Field Campaign at Ascension Island[J],2021,126(10).
APA	Jenkins G.S.,de Castro V.,Cunha B.,Fontanez I.,&Holzworth R..(2021).The Evolution of the Wave-One Ozone Maximum During the 2017 LASIC Field Campaign at Ascension Island.Journal of Geophysical Research: Atmospheres,126(10).
MLA	Jenkins G.S.,et al."The Evolution of the Wave-One Ozone Maximum During the 2017 LASIC Field Campaign at Ascension Island".Journal of Geophysical Research: Atmospheres 126.10(2021).