气候变化领域集成服务门户(CCPortal): A new perspective on the spatial, temporal, and vertical distribution of biomass burning: Quantifying a significant increase in CO emissions

CCPortal

DOI	10.1088/1748-9326/abaa7a
	A new perspective on the spatial, temporal, and vertical distribution of biomass burning: Quantifying a significant increase in CO emissions
	Lin C.; Cohen J.B.; Wang S.; Lan R.; Deng W.
发表日期	2020
ISSN	17489318
卷号	15 期号:10
英文摘要	A variance-maximization approach based on 19 years of weekly measurements of pollution in the troposphere carbon monoxide (CO) measurements quantifies the spatial-temporal distribution of global biomass burning. Seven regions consistent with existing datasets are discovered and shown to burn for longer, over a more widespread area. Each region has a unique and recurring burning season, with three dominated by inter-and intra-annual variation. The CO is primarily lofted to the free troposphere from where it spreads downwind at 800 to 700 mb with three exceptions: The Maritime Continent and South America where there is spread at 300 mb consistent with deep-and pyro-convection; and Southern Africa which reaches to 600 mb. The total mass of CO lofted into the free troposphere ranges from 46% over Central Africa to 92% over Australia. The global, annual emissions made using two different techniques lead to an increase of biomass burning CO emissions of 47TgCO/year and 99TgCO/year respectively. The larger increase is mainly due to two factors: first, a large amount of the emissions is lofted rapidly upwards over the biomass burning region and subsequently transported downwind, therefore not appearing near the biomass source in space and time and second, an increase in inter-annual variability. Consistently, there is an increase in variability year-to-year and during peak events, from which 35% to more than 80% of the total emissions is lofted into the free troposphere. The results demonstrate a significantly higher CO emission from biomass burning, a larger impact on the global atmospheric composition, and likely impacts on atmospheric chemistry and climate change. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	biomass burning; carbon monoxide; four-dimensional emissions; MOPITT; vertical distribution
语种	英语
scopus关键词	Atmospheric composition; Biomass; Carbon monoxide; Climate change; Troposphere; Annual variations; Biomass burning regions; Interannual variability; Maritime Continent; Measurements of pollution in the tropospheres; Spatial-temporal distribution; Variance maximization; Vertical distributions; Atmospheric chemistry; air quality; atmospheric pollution; biomass burning; carbon monoxide; perception; quantitative analysis; spatiotemporal analysis; vertical distribution
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153672
作者单位	School of Atmospheric Sciences, Sun Yat-Sen University, Zhuhai, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; School of Architecture, Massachusetts Institute of Technology, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Lin C.,Cohen J.B.,Wang S.,et al. A new perspective on the spatial, temporal, and vertical distribution of biomass burning: Quantifying a significant increase in CO emissions[J],2020,15(10).
APA	Lin C.,Cohen J.B.,Wang S.,Lan R.,&Deng W..(2020).A new perspective on the spatial, temporal, and vertical distribution of biomass burning: Quantifying a significant increase in CO emissions.Environmental Research Letters,15(10).
MLA	Lin C.,et al."A new perspective on the spatial, temporal, and vertical distribution of biomass burning: Quantifying a significant increase in CO emissions".Environmental Research Letters 15.10(2020).