An Argo-Derived Background Diffusivity Parameterization for Improved Ocean Simulations in the Tropical Pacific
文献类型：期刊论文
| 作者 | Zhu, Yuchao1,2 ; Zhang, Rong-Hua1,2,3
|
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2018-02-16 |
| 卷号 | 45期号:3页码:1509-1517 |
| 关键词 | fine-scale parameterizations diapycnal diffusivity MOM5 |
| ISSN号 | 0094-8276 |
| DOI | 10.1002/2017GL076269 |
| 通讯作者 | Zhang, Rong-Hua(rzhang@qdio.ac.cn) |
| 英文摘要 | Model biases are substantial in ocean and coupled ocean-atmosphere simulations in the tropical Pacific Ocean, including a too cold tongue and too diffuse thermocline. These biases can be partly attributed to vertical mixing parameterizations in which the background diffusivity depiction has great uncertainties. Here based on the fine-scale parameterization, the Argo data are used to derive the spatially varying background diffusivity, with a magnitude of O(10(-6) m(2) s(-1)) in the most area of tropical Pacific. This new scheme is then employed into the version 5.1 of the Modular Ocean Model-based ocean-only and coupled models, resulting in substantial improvements in ocean simulations, including a more realistic cold tongue and equatorial thermocline. The improved simulations can be attributed to the reduced cooling effects induced by weakened equatorial upwelling. Additionally, the subsurface cooling effect is attributed to the reduced heat transfer from the upper layer to the subsurface layer and the convergence of the colder water from off the equator. |
| 资助项目 | CAS ; Western Pacific Ocean System[XDA11010105] ; Western Pacific Ocean System[XDA11020306] ; National Natural Science Foundation of China (NFSC)[41690122] ; National Natural Science Foundation of China (NFSC)[41690120] ; National Natural Science Foundation of China (NFSC)[41475101] ; National Natural Science Foundation of China (NFSC)[41421005] ; Qingdao National Laboratory for Marine Science Technology[2015ASTP] ; Taishan Scholarship ; Recruitment Program of Global Experts |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000426161800037 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/158100]  |
| 专题 | 中国科学院海洋研究所 |
| 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.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Yuchao,Zhang, Rong-Hua. An Argo-Derived Background Diffusivity Parameterization for Improved Ocean Simulations in the Tropical Pacific[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(3):1509-1517. |
| APA | Zhu, Yuchao,&Zhang, Rong-Hua.(2018).An Argo-Derived Background Diffusivity Parameterization for Improved Ocean Simulations in the Tropical Pacific.GEOPHYSICAL RESEARCH LETTERS,45(3),1509-1517. |
| MLA | Zhu, Yuchao,et al."An Argo-Derived Background Diffusivity Parameterization for Improved Ocean Simulations in the Tropical Pacific".GEOPHYSICAL RESEARCH LETTERS 45.3(2018):1509-1517. |
入库方式： OAI收割
来源：海洋研究所
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