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DOI	10.1007/s00382-019-04620-8
	Amount dependency of monsoon rainfall δ18O on multiple time scales: observations from south western India
	Lekshmy P.R.; Midhun M.; Ramesh R.
发表日期	2019
ISSN	0930-7575
起始页码	933
结束页码	941
卷号	53 期号:2020-01-02
英文摘要	Paleoclimatic interpretation of stable isotope based proxies from India is complex due to lack of local amount effect (negative relation between rainfall and its heavy isotopic content observed over tropics) in most places. Recent studies revealed that regional or upstream rainfall/ convective activity plays a major role on daily rainfall δ18O variability. Here we extensively analyze the isotopic variability of Indian Summer Monsoon (ISM) rainfall of south western peninsular India. ISM rainfall δ18O of south western coast of India show significant correlation with the upstream convective activity and the associated rainfall over eastern Arabian Sea on daily, monthly and yearly time scales. A comparative dry–wet–dry (wet–dry–wet) rainfall pattern is observed over north eastern India, peninsular India and the equatorial Indian Ocean during the occurrence of low (high) values of rainfall δ18O at south western coast of India on all time scales. Thus the ISM rainfall δ18O of south western India captures not only the local or upstream convective activities, but reflects the rainfall pattern of a large domain including the Indian subcontinent and Indian Ocean. 18O variations of climatic proxies from south western coast of India can be thus better interpreted in terms of these results. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
语种	英语
scopus关键词	monsoon; paleoclimate; proxy climate record; rainfall; stable isotope; timescale; Arabian Sea; India; Indian Ocean
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146165
作者单位	Department of Atmospheric Sciences, Cochin University of Science and Technology, Cochin, 692016, India; Geosciences Division, Physical Research Laboratory, Ahmedabad, 380009, India; School of Earth and Planetary Sciences, National Institute of Science Education and Research, Bhubaneswar, 752050, India
推荐引用方式 GB/T 7714	Lekshmy P.R.,Midhun M.,Ramesh R.. Amount dependency of monsoon rainfall δ18O on multiple time scales: observations from south western India[J],2019,53(2020-01-02).
APA	Lekshmy P.R.,Midhun M.,&Ramesh R..(2019).Amount dependency of monsoon rainfall δ18O on multiple time scales: observations from south western India.Climate Dynamics,53(2020-01-02).
MLA	Lekshmy P.R.,et al."Amount dependency of monsoon rainfall δ18O on multiple time scales: observations from south western India".Climate Dynamics 53.2020-01-02(2019).