Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| An empirical parameterization of subsurface entrainment temperature for improved SST anomaly simulations in an intermediate ocean model | |
Zhang Ronghua ; Kleeman R; Zebiak SE; Keenlyside N; Raynaud S
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| 2005-01-15 | |
| 发表期刊 | JOURNAL OF CLIMATE
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| 卷号 | 18期号:2页码:350-371 |
| 摘要 | An empirical model for the temperature of subsurface water entrained into the ocean mixed layer (T-e) is presented and evaluated to improve sea Surface temperature anomaly (SSTA) simulations in an intermediate ocean model (IOM) of the tropical Pacific. An inverse modeling approach is adopted to estimate T-e from an SSTA equation using observed SST and simulated Upper-ocean currents. A relationship between T-e and sea surface height (SSH) anomalies is then obtained by utilizing a singular value decomposition (SVD) of their covariance. This empirical scheme is able to better parameterize T-e anomalies than other local schemes and quite realistically depicts interannual variability of T-e, including a nonlocal phase lag relation of T-e variations relative to SSH anomalies over the central equatorial Pacific. An improved T-e parameterization naturally leads to better depiction of the subsurface effect on SST variability by the mean upwelling of subsurface temperature anomalies. As a result, SSTA simulations are significantly improved in the equatorial Pacific a comparison with other schemes indicates that systematic errors of the simulated SSTAs are significantly small-apparently due to the optimized empirical T-e parameterization. Cross validation and comparisons with other model simulations are made to illustrate the robustness and effectiveness of the scheme. In particular it is demonstrated that the empirical T-e model constructed from one historical period can be successfully used to improve SSTA simulations in another. |
| 关键词 | Nino Southern Oscillation Mixed-layer Model El-nino Tropical Pacific Interannual Variability Coupled Model Atmosphere Model Hindcast Skill Part Ii Enso |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/18172 |
| 专题 | 海洋环流与波动重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Ronghua,Kleeman R,Zebiak SE,et al. An empirical parameterization of subsurface entrainment temperature for improved SST anomaly simulations in an intermediate ocean model[J]. JOURNAL OF CLIMATE,2005,18(2):350-371. |
| APA | Zhang Ronghua,Kleeman R,Zebiak SE,Keenlyside N,&Raynaud S.(2005).An empirical parameterization of subsurface entrainment temperature for improved SST anomaly simulations in an intermediate ocean model.JOURNAL OF CLIMATE,18(2),350-371. |
| MLA | Zhang Ronghua,et al."An empirical parameterization of subsurface entrainment temperature for improved SST anomaly simulations in an intermediate ocean model".JOURNAL OF CLIMATE 18.2(2005):350-371. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| An empirical paramet（2096KB） | 限制开放 | CC BY-NC-SA | 浏览 | |||
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