气候变化领域集成服务门户(CCPortal): Controls of Spring Persistence Barrier Strength in Different ENSO Regimes and Implications for 21st Century Changes

CCPortal

DOI	10.1029/2020GL088010
	Controls of Spring Persistence Barrier Strength in Different ENSO Regimes and Implications for 21st Century Changes
	Jin Y.; Lu Z.; Liu Z.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	This paper investigates potential factors that control the El Niño–Southern Oscillation (ENSO) Spring Persistence Barrier (SPB) strength in two different ENSO regimes and apply it to explain the ENSO SPB strength modulation after the 21st century. In a damped, noise-driven model, the theoretical solution of SPB strength illustrates that a weaker ENSO growth rate strengthens SPB. In the self-sustained regime, as in the Cane-Zebiak model (chaotic system), the strengthened thermodynamic damping and weakened thermocline positive feedback lead to a more negative ENSO growth rate and, in turn, a stronger SPB. Therefore, in both ENSO regimes, a weaker ENSO growth rate intensifies the SPB. The application of the theory to the real world suggests that a more negative ENSO growth rate, corresponding to a more damped feedback system, is responsible for the stronger SPB in recent decades than in 1980–2000. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric pressure; Chaotic systems; Climatology; Feedback; Feedback systems; Real-world; Southern oscillation; Theoretical solutions; Growth rate; damping; El Nino-Southern Oscillation; persistence; spring (season); thermal regime; thermocline; thermodynamics; twenty first century
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/170276
作者单位	Department of Atmospheric and Oceanic Sciences, Peking University, Beijing, China; Open Studio for Ocean-Climate-Isotope Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China; Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden; Atmospheric Science Program, Department of Geography, The Ohio State University, Columbus, OH, United States
推荐引用方式 GB/T 7714	Jin Y.,Lu Z.,Liu Z.. Controls of Spring Persistence Barrier Strength in Different ENSO Regimes and Implications for 21st Century Changes[J],2020,47(11).
APA	Jin Y.,Lu Z.,&Liu Z..(2020).Controls of Spring Persistence Barrier Strength in Different ENSO Regimes and Implications for 21st Century Changes.Geophysical Research Letters,47(11).
MLA	Jin Y.,et al."Controls of Spring Persistence Barrier Strength in Different ENSO Regimes and Implications for 21st Century Changes".Geophysical Research Letters 47.11(2020).