An empirical parameterization of subsurface entrainment temperature for improved SST anomaly simulations in an intermediate ocean model
文献类型：期刊论文
| 作者 | Zhang Ronghua
|
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2005-01-15 |
| 卷号 | 18期号:2页码:350-371 |
| 关键词 | NINO SOUTHERN OSCILLATION MIXED-LAYER MODEL EL-NINO TROPICAL PACIFIC INTERANNUAL VARIABILITY COUPLED MODEL ATMOSPHERE MODEL HINDCAST SKILL PART II ENSO |
| 中文摘要 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-08-27 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/18172]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Ronghua. 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.(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."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. |
入库方式： OAI收割
来源：海洋研究所
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