Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| Scaling wind stirring effects in an oceanic bulk mixed layer model with application to an OGCM of the tropical Pacific | |
Zhu, Yuchao1,2 ; Zhang, Rong-Hua1,2,3
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| 2018-09-01 | |
| Source Publication | CLIMATE DYNAMICS
 |
| ISSN | 0930-7575 |
| Volume | 51Issue:5-6Pages:1927-1946 |
| Corresponding Author | Zhang, Rong-Hua(rzhang@qdio.ac.cn) |
| Abstract | The mixed layer depth (MLD) plays an important role in the climate system through its influences on sea surface temperature (SST). The Kraus-Turner-Niiler (hereafter referred to as KTN) bulk mixed layer (ML) model is designed for describing the MLD and has been adopted widely by many ocean modeling. However, large biases exist in the MLD simulation using the original KTN model in the tropical Pacific. This is partly due to the uncertainties in representing wind stirring effect in the model, which is scaled by a parameter (m (0)). Traditionally, m (0) is taken as a constant uniformly in space. In this study, the m (0) is estimated as spatially and seasonally varying through its inverse calculation from a balance equation describing the turbulent kinetic energy (TKE) budget of the ML. It is illustrated that the m (0) is spatially varying over the tropical Pacific. The derived m (0) fields are then embedded into an ocean general circulation model (OGCM). Compared with the observations and the global ocean data assimilation system (GODAS) analyses, the MLD simulations in the OGCM with varying m (0) are substantially improved in the tropical Pacific Ocean on seasonal and interannual time scales. Additionally, the Pacific subtropical cells (STCs) become intensified, accompanied with the strengthening of upwelling in the eastern equatorial Pacific; thus, more realistic simulations are obtained in spatially and seasonally varying m (0) case compared with the constant m (0) case. As the related cooling effect from the upwelling is enhanced, the simulated SST is slightly cooled down in the eastern equatorial Pacific. Further applications and implications are also discussed. |
| Keyword | Bulk mixed layer Optimizing wind stirring effect Ocean circulation models |
| DOI | 10.1007/s00382-017-3990-5 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | CAS Strategic Priority Project (Western Pacific Ocean System)[XDA11010105] ; CAS Strategic Priority Project (Western Pacific Ocean System)[XDA11020306] ; National Natural Science Foundation of China (NFSC)[41690122(41690120)] ; National Natural Science Foundation of China (NFSC)[41421005] ; Taishan Scholarship and Qingdao Innovative Program[13-CX-22] |
| WOS Research Area | Meteorology & Atmospheric Sciences |
| WOS Subject | Meteorology & Atmospheric Sciences |
| WOS ID | WOS:000442433200019 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/159934 |
| Collection | 海洋环流与波动重点实验室 |
| Corresponding Author | Zhang, Rong-Hua |
| Affiliation | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China |
| First Author Affilication | Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences |
| Corresponding Author Affilication | Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Zhu, Yuchao,Zhang, Rong-Hua. Scaling wind stirring effects in an oceanic bulk mixed layer model with application to an OGCM of the tropical Pacific[J]. CLIMATE DYNAMICS,2018,51(5-6):1927-1946. |
| APA | Zhu, Yuchao,&Zhang, Rong-Hua.(2018).Scaling wind stirring effects in an oceanic bulk mixed layer model with application to an OGCM of the tropical Pacific.CLIMATE DYNAMICS,51(5-6),1927-1946. |
| MLA | Zhu, Yuchao,et al."Scaling wind stirring effects in an oceanic bulk mixed layer model with application to an OGCM of the tropical Pacific".CLIMATE DYNAMICS 51.5-6(2018):1927-1946. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Scaling wind stirrin（8367KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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