DOI: 10.1007/s00382-012-1640-5
Scopus记录号: 2-s2.0-84891627227
论文题名: Marine biological feedback associated with Indian Ocean Dipole in a coupled ocean/biogeochemical model
作者: Park J.-Y. ; Kug J.-S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-01-02 起始页码: 329
结束页码: 343
语种: 英语
英文关键词: Biological feedback
; Chlorophyll
; Indian Ocean Dipole
英文摘要: The impact of marine ecosystem on the tropical climate variability in the Indian Ocean is investigated by performing coupled ocean/biogeochemical model experiments, which are forced by realistic surface winds from 1951 to 2010. Results from a suite of chlorophyll perturbation experiments reveal that the presence of chlorophyll can have significant effects on the characteristics of the Indian Ocean Dipole (IOD), including its amplitude and skewness, as well as on the mean state. Specifically, chlorophyll increases mean sea surface temperature due to direct biological heating in regions where the mean mixed layer depth is generally shallow. It is also found that the presence of chlorophyll affects the IOD magnitude by two different processes: One is the amplifying effect by the mean chlorophyll, which leads to shoaling of mean thermocline depth, and the other is the damping effect by the interactively varying chlorophyll coupled with the physical model. There is also a biological impact on the skewness of the IOD, resulting in enhanced positive skewness. This skewness change is primarily caused by the phase dependency of the above two contradicting effects involving the asymmetric thermocline feedback and the nonlinear mixed layer heating. © 2012 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54459
Appears in Collections: 过去全球变化的重建
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作者单位: Korea Institute of Ocean Science and Technology, 787 Haean-ro, Sangnok-gu, Ansan, 426-744, South Korea
Recommended Citation:
Park J.-Y.,Kug J.-S.. Marine biological feedback associated with Indian Ocean Dipole in a coupled ocean/biogeochemical model[J]. Climate Dynamics,2014-01-01,42(2017-01-02)