气候变化领域集成服务门户(CCPortal): Monsoon precipitation variations in Myanmar since AD 1770: linkage to tropical ocean‐atmospheric circulations

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DOI	10.1007/s00382-021-05645-8
	Monsoon precipitation variations in Myanmar since AD 1770: linkage to tropical ocean‐atmospheric circulations
	Zaw Z.; Fan Z.-X.; Bräuning A.; Liu W.; Gaire N.P.; Than K.Z.; Panthi S.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-09-10
英文摘要	To understand inter-annual to decadal summer monsoon precipitation variations in Myanmar, we developed new tree-ring chronologies of Tectona grandis (teak) from three sampling sites in north-central Myanmar where the climatic proxy is sparse. A regional chronology (spanning 1700–2016) derived from three site chronologies showed a strongly positive precipitation sensitivity during the summer monsoon (R = 0.71), indicating that slow tree growth was detected in years of deficient precipitation. We reconstructed monsoon precipitation (May–October) for the period 1770–2016, with robust calibration-verification statistics. Our reconstruction revealed 22 (16) extremely dry (wet) years over the past 247 years. Several dry and wet episodes recorded in our reconstruction are consistent with other precipitation proxies from tropical Asia, such as the East Indian drought in 1790–1796 and the Victorian Holocaust drought in 1888–1890. The 2.0–4.0-year high-frequency periodicities revealed from spectral peaks and dominant regions of high spatial correlations indicated the summer precipitation in Myanmar is linked with broader-scale ocean-atmospheric circulations, mainly associated with the El Niño-Southern Oscillation (ENSO) activities due to sea surface temperature variations in the tropical Pacific Ocean. Coherent relationships of our reconstructed series with ENSO-related climate indices further support the dynamics of monsoon precipitation variability in Myanmar is inter-linked with global climate systems. Our reconstruction inferred from teak tree rings may be useful to provide valuable insight into the impacts of extreme weather events associated with monsoon hydroclimate in Myanmar. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
英文关键词	El Niño-Southern Oscillation (ENSO); Monsoon hydroclimate variability; Myanmar; Tectona grandis (teak); Tree ring‐width
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/183302
作者单位	CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China; College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Xishuangbanna, 666303, China; Institute of Geography, University of Erlangen-Nürnberg, Erlangen, 91058, Germany; Watershed Management Division, Forest Department, Ministry of Natural Resources and Environmental Conservation, Nay Pyi Taw, 15011, Myanmar
推荐引用方式 GB/T 7714	Zaw Z.,Fan Z.-X.,Bräuning A.,等. Monsoon precipitation variations in Myanmar since AD 1770: linkage to tropical ocean‐atmospheric circulations[J],2021,56(2021-09-10).
APA	Zaw Z..,Fan Z.-X..,Bräuning A..,Liu W..,Gaire N.P..,...&Panthi S..(2021).Monsoon precipitation variations in Myanmar since AD 1770: linkage to tropical ocean‐atmospheric circulations.Climate Dynamics,56(2021-09-10).
MLA	Zaw Z.,et al."Monsoon precipitation variations in Myanmar since AD 1770: linkage to tropical ocean‐atmospheric circulations".Climate Dynamics 56.2021-09-10(2021).