Regime shifts in the North Pacific simulated by a COADS-driven isopycnal model
文献类型：期刊论文
| 作者 | Wang, DX ; Wang, J ; Wu, LX ; Liu, ZY |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2003 |
| 卷号 | 20期号:5页码:743-754 |
| 关键词 | North Pacific ventilated thermocline regime shift isopycnal model |
| ISSN号 | 0256-1530 |
| 中文摘要 | The Miami Isopycnal Coordinate Ocean Model (MICOM) is adopted to simulate the interdecadal variability in the Pacific Ocean with most emphasis on regime shifts in the North Pacific. The computational domain covers 60degreesN to 40degreesS with an enclosed boundary condition for momentum flux, whereas there are thermohaline fluxes across the southern end as a restoring term. In addition, sea surface salinity of the model relaxes to the climatological season cycle, which results in climatological fresh water fluxes. Surface forcing functions from January 1945 through December 1993 are derived from the Comprehensive Ocean and Atmospheric Data Set (COADS). Such a numerical experiment reproduces the observed evolution of the interdecadal variability in the heat content over the upper 400-m layer by a two-year lag. Subduction that occurs at the ventilated thermocline in the central North Pacific is also been simulated and the subducted signals propagate from 35degreesN to 25degreesN, taking about 8 to 10 years, in agreement with the eXpendable Bathy Thermograph observation over recent decades. Interdecadal signals take a southwestward and downward path rather than westward propagation, meaning they are less associated with the baroclinic planetary waves. During travel, the signals appear to conserve potential vorticity. Therefore, the ventilated thermocline and related subduction are probably the fundamental physics for interdecadal variability in the mid-latitude subtropics of the North Pacific. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| 收录类别 | SCI |
| 原文出处 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000185670500006 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/5545]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Wang, DX,Wang, J,Wu, LX,et al. Regime shifts in the North Pacific simulated by a COADS-driven isopycnal model[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2003,20(5):743-754. |
| APA | Wang, DX,Wang, J,Wu, LX,&Liu, ZY.(2003).Regime shifts in the North Pacific simulated by a COADS-driven isopycnal model.ADVANCES IN ATMOSPHERIC SCIENCES,20(5),743-754. |
| MLA | Wang, DX,et al."Regime shifts in the North Pacific simulated by a COADS-driven isopycnal model".ADVANCES IN ATMOSPHERIC SCIENCES 20.5(2003):743-754. |
入库方式： OAI收割
来源：南海海洋研究所
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