气候变化领域集成服务门户(CCPortal): Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies

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DOI	10.5194/acp-22-10061-2022
	Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies
	Myers, Deanna C.; Kim, Saewung; Sjostedt, Steven; Guenther, Alex B.; Seco, Roger; Bustillos, Oscar Vega; Tota, Julio; Souza, Rodrigo A. F.; Smith, James N.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	10061
结束页码	10076
卷号	22 期号:15 页码:16
英文摘要	Sulfuric acid is a key contributor to new particle formation, though measurements of its gaseous concentrations are difficult to make. Several parameterizations to estimate sulfuric acid exist, all of which were constructed using measurements from the Northern Hemisphere. In this work, we report the first measurements of sulfuric acid from the Amazon basin. These measurements are consistent with concentrations measured in Hyytiala, Finland, though, unlike Hyytiala, there is no clear correlation of sulfuric acid with global radiation. There was a minimal difference in sulfuric acid observed between the wet and dry seasons in the Amazon basin. We also test the efficacy of existing proxies to estimate sulfuric acid in this region. Our results suggest that nighttime sulfuric acid production is due to both a stabilized Criegee intermediate pathway and oxidation of SO2 by OH, the latter of which is not currently accounted for in existing proxies. These results also illustrate the drawbacks of the common substitution of radiation for OH concentrations. None of the tested proxies effectively estimate sulfuric acid measurements at night. For estimates at all times of day, a recently published proxy based on data from the boreal forest should be used. If only daytime estimates are needed, several recent proxies that do not include the Criegee pathway are sufficient. More investigation of nighttime sulfuric acid production pathways is necessary to close the gap between measurements and estimates with existing proxies.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000836199900001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273227
作者单位	University of California System; University of California Irvine; University of California System; University of California Irvine; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Centro de Investigacion y Desarrollo Pascual Vila (CID-CSIC); CSIC - Instituto de Diagnostico Ambiental y Estudios del Agua (IDAEA); Comissao Nacional de Energia Nuclear (CNEN); Instituto de Pesquisas Energeticas e Nucleares (IPEN); Universidade Federal do Oeste do Para; Universidade do Estado do Amazonas
推荐引用方式 GB/T 7714	Myers, Deanna C.,Kim, Saewung,Sjostedt, Steven,et al. Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies[J],2022,22(15):16.
APA	Myers, Deanna C..,Kim, Saewung.,Sjostedt, Steven.,Guenther, Alex B..,Seco, Roger.,...&Smith, James N..(2022).Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(15),16.
MLA	Myers, Deanna C.,et al."Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.15(2022):16.