气候变化领域集成服务门户(CCPortal): Interannual Southern California Precipitation Variability During the Common Era and the ENSO Teleconnection

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DOI	10.1029/2019GL085891
	Interannual Southern California Precipitation Variability During the Common Era and the ENSO Teleconnection
	Du X.; Hendy I.; Hinnov L.; Brown E.; Schimmelmann A.; Pak D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Southern California's Mediterranean-type hydroclimate is highly variable on interannual time scales due to teleconnected climate forcings such as the El Niño–Southern Oscillation (ENSO). Here we present subannually resolved scanning X-ray fluorescence Ti counts from deep-sea cores in Santa Barbara Basin, California, recording 2,000 years of hydroclimate variability. The reconstructed Southern California precipitation record contains interannual variability in the 2- to 7-year band that could be driven by changes in tropical Pacific ENSO variability and/or the strength of the ENSO teleconnection modulated by extratropical pressure systems. Observed interannual precipitation variance increased and was associated with longer periodicities (5–7 years) when the Intertropical Convergence Zone migrated southward (1370–1540 CE) and the Aleutian Low strengthened creating a robust ENSO teleconnection. Weak interannual precipitation variance with shorter periodicity (2–3 years) was observed when the Intertropical Convergence Zone shifted northward (700–900 CE) and/or the Aleutian Low was weak (1540–1680 CE). ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric pressure; Precipitation (meteorology); Interannual; last 2,000 years; Southern California; Teleconnections; varves; Climatology; air-sea interaction; annual variation; climate forcing; hydrometeorology; intertropical convergence zone; precipitation (climatology); teleconnection; California; Pacific Ocean; Pacific Ocean (Tropical); Santa Barbara Basin
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170888
作者单位	Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, United States; Department of Atmospheric, Oceanic, and Earth Sciences, George Mason University, Fairfax, VA, United States; Large Lakes Observatory and Department of Earth and Environmental Sciences, University of Minnesota, Duluth, Duluth, MN, United States; Department of Earth and Atmospheric Sciences, Indiana University, Bloomington, IN, United States; Marine Science Institute, University of California, Santa Barbara, CA, United States
推荐引用方式 GB/T 7714	Du X.,Hendy I.,Hinnov L.,et al. Interannual Southern California Precipitation Variability During the Common Era and the ENSO Teleconnection[J],2020,47(1).
APA	Du X.,Hendy I.,Hinnov L.,Brown E.,Schimmelmann A.,&Pak D..(2020).Interannual Southern California Precipitation Variability During the Common Era and the ENSO Teleconnection.Geophysical Research Letters,47(1).
MLA	Du X.,et al."Interannual Southern California Precipitation Variability During the Common Era and the ENSO Teleconnection".Geophysical Research Letters 47.1(2020).