Interannual horizontal heat advection in the surface mixed layer over the equatorial Pacific Ocean: assimilation versus TAO analysis
文献类型：期刊论文
| 作者 | Yuan, Dongliang
|
| 刊名 | THEORETICAL AND APPLIED CLIMATOLOGY
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 97期号:1-2页码:3-15 |
| 关键词 | Warm Pool Displacements 1997-98 El-nino Southern-oscillation Seasonal Cycle Balance Model Temperature Variability Dynamics Circulation |
| ISSN号 | 0177-798X |
| DOI | 10.1007/s00704-008-0068-7 |
| 文献子类 | Article |
| 英文摘要 | The interannual anomalies of horizontal heat advection in the surface mixed layer over the equatorial Pacific Ocean in an assimilation experiment are studied and compared with existing observational analyses. The assimilation builds upon a hindcast study that has produced a good simulation of the observed equatorial currents and optimizes the simulation of the Reynolds sea surface temperature (SST) data. The comparison suggests that the assimilation has improved the simulation of the interannual horizontal heat advection of the surface mixed layer significantly. During periods of interrupted current measurements, the assimilation is shown to produce more meaningful anomalies of the heat advection than the interpolation of the observational data does. The assimilation also shows that the eddy heat flux due to the correlation between high-frequency current and SST variations, which is largely overlooked by the existing observational analyses, is important for the interannual SST balance over the equatorial Pacific. The interannual horizontal heat advection anomalies are found to be sensitive to SST errors where oceanic currents are strong, which is a challenge for ENSO prediction. The study further suggests that the observational analyses of the tropical SST balance based on the TAO and the Reynolds SST data contain significant errors due to the large gradient errors in the Reynolds SST data, which are amplified into the advection anomalies by the large equatorial currents.; The interannual anomalies of horizontal heat advection in the surface mixed layer over the equatorial Pacific Ocean in an assimilation experiment are studied and compared with existing observational analyses. The assimilation builds upon a hindcast study that has produced a good simulation of the observed equatorial currents and optimizes the simulation of the Reynolds sea surface temperature (SST) data. The comparison suggests that the assimilation has improved the simulation of the interannual horizontal heat advection of the surface mixed layer significantly. During periods of interrupted current measurements, the assimilation is shown to produce more meaningful anomalies of the heat advection than the interpolation of the observational data does. The assimilation also shows that the eddy heat flux due to the correlation between high-frequency current and SST variations, which is largely overlooked by the existing observational analyses, is important for the interannual SST balance over the equatorial Pacific. The interannual horizontal heat advection anomalies are found to be sensitive to SST errors where oceanic currents are strong, which is a challenge for ENSO prediction. The study further suggests that the observational analyses of the tropical SST balance based on the TAO and the Reynolds SST data contain significant errors due to the large gradient errors in the Reynolds SST data, which are amplified into the advection anomalies by the large equatorial currents. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000266827700002 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2423]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Dongliang. Interannual horizontal heat advection in the surface mixed layer over the equatorial Pacific Ocean: assimilation versus TAO analysis[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2009,97(1-2):3-15. |
| APA | Yuan, Dongliang.(2009).Interannual horizontal heat advection in the surface mixed layer over the equatorial Pacific Ocean: assimilation versus TAO analysis.THEORETICAL AND APPLIED CLIMATOLOGY,97(1-2),3-15. |
| MLA | Yuan, Dongliang."Interannual horizontal heat advection in the surface mixed layer over the equatorial Pacific Ocean: assimilation versus TAO analysis".THEORETICAL AND APPLIED CLIMATOLOGY 97.1-2(2009):3-15. |
入库方式： OAI收割
来源：海洋研究所
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