Freshwater Flux and Ocean Chlorophyll Produce Nonlinear Feedbacks in the Tropical Pacific | |
Zhang, Rong-Hua1,2,3,4![]() | |
刊名 | JOURNAL OF CLIMATE
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2019-04-01 | |
卷号 | 32期号:7页码:2037-2055 |
关键词 | Pacific Ocean Atmosphere-ocean interaction ENSO Freshwater Coupled models Ecological models |
ISSN号 | 0894-8755 |
DOI | 10.1175/JCLI-D-18-0430.1 |
通讯作者 | Zhang, Rong-Hua(rzhang@qdio.ac.cn) |
英文摘要 | Various forcing and feedback processes coexist in the tropical Pacific, which can modulate El Nino-Southern Oscillation (ENSO). In particular, large covariabilities in chlorophyll (Chl) and freshwater flux (FWF) at the sea surface are observed during ENSO cycles, acting to execute feedbacks on ENSO through the related ocean-biology-induced heating (OBH) and FWF forcing, respectively. At present, the related effects and underlying mechanism are strongly model dependent and are still not well understood. Here, a new hybrid coupled model (HCM), developed to represent interactions between the atmosphere and ocean physics-biology (AOPB) in the tropical Pacific, is used to examine the extent to which ENSO can be modulated by interannually covarying anomalies of FWF and Chl. HCM AOPB-based sensitivity experiments indicate that individually the FWF forcing tends to amplify ENSO via its influence on the stratification and vertical mixing in the upper ocean, whereas the OBH feedback tends to damp it. While the FWF- and OBH-related individual effects tend to counteract each other, their combined effects give rise to unexpected situations. For example, an increase in the FWF forcing intensity actually acts to decrease the ENSO amplitude when the OBH feedback effects coexist at a certain intensity. The nonlinear modulation of the ENSO amplitude can happen when the FWF-related amplifying effects on ENSO are compensated for by OBH-related damping effects. The results offer insight into modulating effects on ENSO, which are evident in nature and different climate models. |
资助项目 | National Natural Science Foundation of China[41690122] ; National Natural Science Foundation of China[41690120] ; National Natural Science Foundation of China[41475101] ; National Natural Science Foundation of China[41490644] ; National Natural Science Foundation of China[41490640] ; NSFC-Shandong Joint Fund forMarine Science Research Centers[U1406402] ; Taishan Scholarship |
WOS研究方向 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | AMER METEOROLOGICAL SOC |
WOS记录号 | WOS:000461788600001 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/154914] ![]() |
专题 | 海洋研究所_海洋环流与波动重点实验室 |
通讯作者 | Zhang, Rong-Hua |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 5.UCAR, Boulder, CO USA 6.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing, Peoples R China 7.Joint Ctr Global Change Studies, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Rong-Hua,Tian, Feng,Busalacchi, Antonio J.,et al. Freshwater Flux and Ocean Chlorophyll Produce Nonlinear Feedbacks in the Tropical Pacific[J]. JOURNAL OF CLIMATE,2019,32(7):2037-2055. |
APA | Zhang, Rong-Hua,Tian, Feng,Busalacchi, Antonio J.,&Wang, Xiujun.(2019).Freshwater Flux and Ocean Chlorophyll Produce Nonlinear Feedbacks in the Tropical Pacific.JOURNAL OF CLIMATE,32(7),2037-2055. |
MLA | Zhang, Rong-Hua,et al."Freshwater Flux and Ocean Chlorophyll Produce Nonlinear Feedbacks in the Tropical Pacific".JOURNAL OF CLIMATE 32.7(2019):2037-2055. |
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