Study of air-sea interactions on multi temporal scales over oceanic fronts

我们在《自然》杂志（2008年3月13日）的封面文章中报道了墨西哥湾流引起的一系列大气响应，不仅限于大气边界层，而且渗透到自由对流层。此外，我们还发现了两种不同的大气模式，即，冬季以浅层供热为主，夏季以深层供热为主。夏、冬两季大气响应的差异与两季大气稳定度有关。大气-海洋耦合环流模式的长期数值积分真实地再现了最近卫星地面风观测的主要特征。此外，获得了与海潮有关的波浪破碎的第一个观测证据，预计波浪破碎将导致低海面温度。

We reported in a cover article of Nature (13 Mar. 2008) that the Gulf Stream causes a series of atmospheric responses, not limited to the atmospheric boundary layer, but penetrate to the free troposphere. Also, we found two different atmospheric modes, i.e., the shallow heating mode prominent in winter and the deep heating mode in summer. The difference of the summer and winter atmospheric responses is associated with the atmospheric stability between the two seasons. A long-term numerical integration of an Atmosphere-Ocean Coupled General Circulation model realistically reproduces major features of the recent satellite surface-wind observations. Furthermore, the first observational evidence of wave breaking, which is expected to cause low sea-surface temperatures, associated with ocean tide is obtained.