IOCAS-IR  > 海洋环流与波动重点实验室
Effects on Ocean Biology Induced by El Nino-Accompanied Positive Freshwater Flux Anomalies in the Tropical Pacific
Tian, Feng1,2,3,4; Zhang, Rong-Hua1,2,3,4; Wang, Xiujun5,6
2020
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume125Issue:1Pages:23
Corresponding AuthorZhang, Rong-Hua(rzhang@qdio.ac.cn)
AbstractThe El Nino and Southern Oscillation (ENSO) can induce large perturbations in freshwater flux (FWF, defined as precipitation minus evaporation) and ocean ecosystem in the tropical Pacific. However, how El Nino-induced FWF can affect the tropical Pacific ecosystem (e.g., chlorophyll) is still unknown. Here, a series of ocean-only experiments are performed using a coupled ocean-physical biogeochemistry model forced by prescribed climatological wind stress. Interannual FWF anomalies observed during the 1997-1998 El Nino event are imposed onto the ocean model in the tropical Pacific, and the related positive FWF anomalies are specified to be varying in its intensity, and the corresponding sensitivity experiments are performed to examine the ocean ecosystem response. In general, chlorophyll increases with the intensities of the El Nino-induced positive FWF anomalies at a certain strength but decreases when the positive FWF forcing is underrepresented (e.g., specified to be its half intensity). Additionally, chlorophyll in the eastern tropical Pacific keeps almost steady during the increasing stage of the El Nino-induced interannual FWF forcing and then rapidly increases after the peak stage of the FWF forcing. The phytoplankton budget and diagnostic analyses are conducted to understand the behavior of chlorophyll in response to varying intensities of FWF forcing. Chlorophyll response to varying intensities of FWF forcing depends on the iron concentration in the mixed layer, suggesting that the ocean ecosystem response may be shifted from one regime to another when FWF forcing reaches a certain intensity. These results offer insights into biophysical interactions and chlorophyll-induced feedback effects on ENSO.
DOI10.1029/2019JC015790
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC1404102 (2017YFC1404100)] ; National Natural Science Foundation of China (NFSC)[41690122 (41690120)] ; National Natural Science Foundation of China (NFSC)[41490644 (41490640)] ; National Natural Science Foundation of China (NFSC)[41421005] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40000000] ; Taishan Scholarship ; China Postdoctoral Science Foundation[2019M662453]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000530025100029
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167522
Collection海洋环流与波动重点实验室
Corresponding AuthorZhang, Rong-Hua
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol, Qingdao, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing, Peoples R China
6.Beijing Normal Univ, Joint Ctr Global Change Studies, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Tian, Feng,Zhang, Rong-Hua,Wang, Xiujun. Effects on Ocean Biology Induced by El Nino-Accompanied Positive Freshwater Flux Anomalies in the Tropical Pacific[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(1):23.
APA Tian, Feng,Zhang, Rong-Hua,&Wang, Xiujun.(2020).Effects on Ocean Biology Induced by El Nino-Accompanied Positive Freshwater Flux Anomalies in the Tropical Pacific.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(1),23.
MLA Tian, Feng,et al."Effects on Ocean Biology Induced by El Nino-Accompanied Positive Freshwater Flux Anomalies in the Tropical Pacific".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.1(2020):23.
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