1. 6月6日学术报告：The Available Potential Energy (APE) and thermobric effect of the World Ocean 题目：The Available Potential Energy (APE) and thermobric effect of the World Ocean(全球海洋的可用势能以及温压效应） 时间：6月6日（星期三）下午2:30 地点：1514会议室 报告人：苏展博士 单位：加州理工地质与行星科学系 Abstract: The concept of available potential energy (APE), first promulgated by Margules (1903) and formalized by Lorentz (1955), has far-reaching application in meridional overturning circulation of ocean and dynamical meteorology (e.g., see Bryan and Lewis 1979, Hughes et al. 2009).Although Dutton and Johnson (1967), Wiin-Nielsen and Chen(1993) got some theoretical studies in APE of meteorology and proposed a variational approach that leads to a well-defined mathematical problem, no practical algorithm has ever been proposed (Huang 2005). In this talk, I will demonstrate that the APE of World Ocean with topography is equal to the enthalpy difference between its current physical state and the reference state. And use the concept of enthalpy; we develop a accurate algorithm to calculate APE of world ocean. Furthermore, I will use a 2-D numerical model to show that the nature of APE for a singer column case is due to thermobaric effect. And it is the energy source for convection.

Qinxiu Li Posted at 2012-05-28 10:25 CST Last modified at 2012-05-28 10:25 CST Link to this poster Top