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DOI	10.5194/acp-22-4005-2022
	Full latitudinal marine atmospheric measurements of iodine monoxide
	Takashima, Hisahiro; Kanaya, Yugo; Kato, Saki; Friedrich, Martina M.; Van Roozendael, Michel; Taketani, Fumikazu; Miyakawa, Takuma; Komazaki, Yuichi; Cuevas, Carlos A.; Saiz-Lopez, Alfonso; Sekiya, Takashi
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	4005
结束页码	4018
卷号	22 期号:6 页码:14
英文摘要	Iodine compounds destroy ozone (O-3) in the global troposphere and form new aerosols, thereby affecting the global radiative balance. However, few reports have described the latitudinal distribution of atmospheric iodine compounds. This work reports iodine monoxide (IO) measurements taken over unprecedented sampling areas from the Arctic to the Southern Hemisphere and spanning sea surface temperatures (SSTs) of approximately 0 to 31.5 degrees C. The highest IO concentrations were observed over the Western Pacific warm pool (WPWP), where O-3 minima were also measured. There, a negative correlation was found between O-3 and IO mixing ratios at extremely low O-3 concentrations. This correlation is not explained readily by the O-3-dependent oceanic fluxes of photolabile inorganic iodine compounds, which is the dominant source in recent global-scale chemistry transport models representing iodine chemistry. Actually, the correlation rather implies that O-3-independent pathways can be similarly important in the WPWP. The O-3-independent fluxes result in a 15 % greater O-3 loss than that estimated for O-3-dependent processes alone. The daily O-3 loss rate related to iodine over the WPWP is as high as approximately 2 ppbv (parts per billion by volume) despite low O-3 concentrations of approximately 10 ppbv, with the loss being up to 100 % greater than that without iodine. This finding suggests that warming SST driven by climate change might affect the marine atmospheric chemical balance through iodine-ozone chemistry.
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:000776153500001
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/273262
作者单位	Fukuoka University; Japan Agency for Marine-Earth Science & Technology (JAMSTEC); Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Quimica Fisica Rocasolano (IQFR)
推荐引用方式 GB/T 7714	Takashima, Hisahiro,Kanaya, Yugo,Kato, Saki,et al. Full latitudinal marine atmospheric measurements of iodine monoxide[J],2022,22(6):14.
APA	Takashima, Hisahiro.,Kanaya, Yugo.,Kato, Saki.,Friedrich, Martina M..,Van Roozendael, Michel.,...&Sekiya, Takashi.(2022).Full latitudinal marine atmospheric measurements of iodine monoxide.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(6),14.
MLA	Takashima, Hisahiro,et al."Full latitudinal marine atmospheric measurements of iodine monoxide".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.6(2022):14.