Dynamics of the Low-Frequency Variability of the Kuroshio Current System

黑潮海流系统低频变化的动力学

• 批准号: 9911268
• 负责人: Bo Qiu
• 金额: $ 21万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9911268&HistoricalAwards=false
• 关键词: Dynamics; Low; Frequency; Variability; Kuroshio

9911268The investigator advances the hypothesis that an important source of decadal variability for the Kuroshio lies in the interaction of the Kuroshio with the inertial recirculation to its immediate south. He argues that this interaction is a possible mechanism for the rapid transitions between two alternative persistent equilibria, one in which the Kuroshio path is relatively straight as it flows past Japan and one in which it develops a quasistationary southward meander. The investigator proposes to test this hypothesis with a simplified numerical model of the north-west Pacific, a low vertical resolution version of MICOM. In particular, he will examine the potential vorticity budget of the time varying Kuroshio/inertial recirculation system. Experiments will also be made to test the influence of surface buoyancy fluxes over the recirculation gyre on the evolution of that gyre. The region of the Pacific concerned and its dynamical counterpart in the North Atlantic are the locations of some of the largest air-sea heat exchanges seen outside the tropics.

9911268研究者推进了以下假设：黑鲁希奥的衰老变异性的重要来源在于黑鲁希奥与惯性再循环的相互作用到其立即南部。 他认为，这种相互作用是在两个替代持续的均衡之间快速过渡的可能机制，其中黑子路径是相对直接的，因为它流过日本，并且在其中形成了一种排序的向南曲折。 研究人员建议通过西北太平洋的简化数值模型来检验这一假设，西北太平洋是MICOM的低垂直分辨率版本。 特别是，他将研究变化的黑素/惯性再循环系统的潜在涡度预算。 还将进行实验，以测试表面浮力通量对再循环的影响对GYRE的演变。有关太平洋地区及其在北大西洋地区的动态对应区是热带地区以外看到的一些最大的空气热交区的位置。