IOCAS-IR  > 海洋环流与波动重点实验室
An ocean-biology-induced negative feedback on ENSO as derived from a hybrid coupled model of the tropical Pacific
Zhang, Rong-Hua1,2
2015-12-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
Volume120Issue:12Pages:8052-8076
SubtypeArticle
AbstractBiological conditions in the tropical Pacific Ocean (e.g., phytoplankton biomass) are strongly regulated by physical changes that are associated with the El Nino-Southern Oscillation (ENSO). The existence and variation of phytoplankton biomass act to modulate the vertical penetration of the incoming sunlight into the upper ocean, which causes an ocean-biology-induced heating (OBH) effect on the climate system. Previously, the penetration depth of solar radiation in the upper ocean (H-p) has been defined to describe the related bioclimate connections. An empirical model for interannual H-p variability that is parameterized in terms of its relationship with the sea surface temperature (SST) in the tropical Pacific was derived from remotely sensed ocean color data and is incorporated into a hybrid coupled model (HCM) to represent the OBH effects. In this paper, several HCM experiments are performed to demonstrate the biofeedback onto the ENSO, including a climatological H-p run (in which H-p is prescribed as only seasonally varying), interannual H-p runs (with different intensities of the interannually varying OBH effects), and a run in which the sign of the OBH effect is reversed. Significant modulating impacts on the interannual variability are found in the HCM and are characterized by a negative feedback between the ocean biology and the climate system in the tropical Pacific; stronger the OBH feedback, weaker the interannual variability. The processes that are involved in the feedback are analyzed. The SST is modulated indirectly by dynamic ocean processes that are induced by OBH. The significance and implication of the OBH effects are discussed in terms of their roles in ENSO variability and the model biases in the tropical Pacific.
KeywordBiofeedback Enso Modulation Hybrid Coupled Model
DOI10.1002/2015JC011305
Indexed BySCI
Language英语
WOS IDWOS:000369153200019
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/112449
Collection海洋环流与波动重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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Zhang, Rong-Hua. An ocean-biology-induced negative feedback on ENSO as derived from a hybrid coupled model of the tropical Pacific[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2015,120(12):8052-8076.
APA Zhang, Rong-Hua.(2015).An ocean-biology-induced negative feedback on ENSO as derived from a hybrid coupled model of the tropical Pacific.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,120(12),8052-8076.
MLA Zhang, Rong-Hua."An ocean-biology-induced negative feedback on ENSO as derived from a hybrid coupled model of the tropical Pacific".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 120.12(2015):8052-8076.
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