气候变化领域集成服务门户(CCPortal): On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core

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DOI	10.5194/acp-22-13407-2022
	On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core
	Cao, Yanzhi; Jiang, Zhuang; Alexander, Becky; Cole-Dai, Jihong; Savarino, Joel; Erbland, Joseph; Geng, Lei
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13407
结束页码	13422
卷号	22 期号:20 页码:16
英文摘要	Column ozone variability has important implications for surface photochemistry and the climate. Ice-core nitrate isotopes are suspected to be influenced by column ozone variability and delta N-15(NO3-) has been sought to serve as a proxy of column ozone variability. In this study, we examined the ability of ice-core nitrate isotopes to reflect column ozone variability by measuring delta N-15(NO3-) and Delta O-17(NO3-) in a shallow ice core drilled at the South Pole. The ice core covers the period 1944-2005, and during this period delta N-15(NO3-) showed large annual variability ((59.2 +/- 29.3)parts per thousand), but with no apparent response to the Antarctic ozone hole. Utilizing a snow photochemical model, we estimated 6.9 parts per thousand additional enrichments in delta N-15(NO3-) could be caused by the development of the ozone hole. Nevertheless, this enrichment is small and masked by the effects of the snow accumulation rate at the South Pole over the same period of the ozone hole. The Delta O-17(NO3-) record has displayed a decreasing trend by similar to 3.4 parts per thousand since 1976. This magnitude of change cannot be caused by enhanced post-depositional processing related to the ozone hole. Instead, the Delta O-17(NO3-) decrease was more likely due to the proposed decreases in the O-3 / HOx ratio in the extratropical Southern Hemisphere. Our results suggest ice-core delta N-15(NO3-) is more sensitive to snow accumulation rate than to column ozone, but at sites with a relatively constant snow accumulation rate, information of column ozone variability embedded in delta N-15(NO3-) should be retrievable.
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:000869125300001
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/273324
作者单位	Chinese Academy of Sciences; University of Science & Technology of China, CAS; University of Washington; University of Washington Seattle; South Dakota State University; Centre National de la Recherche Scientifique (CNRS); Communaute Universite Grenoble Alpes; UDICE-French Research Universities; Universite Grenoble Alpes (UGA); Institut de Recherche pour le Developpement (IRD); Chinese Academy of Sciences; University of Science & Technology of China, CAS; Laoshan Laboratory
推荐引用方式 GB/T 7714	Cao, Yanzhi,Jiang, Zhuang,Alexander, Becky,et al. On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core[J],2022,22(20):16.
APA	Cao, Yanzhi.,Jiang, Zhuang.,Alexander, Becky.,Cole-Dai, Jihong.,Savarino, Joel.,...&Geng, Lei.(2022).On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),16.
MLA	Cao, Yanzhi,et al."On the potential fingerprint of the Antarctic ozone hole in ice-core nitrate isotopes: a case study based on a South Pole ice core".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):16.