Modeling of the Tropical Atmosphere-Ocean System

他们将继续，并扩大他们以前的 热带海洋和大气的模拟研究。 一个主要 重点将是改进大气加热的发展 参数化，考虑到不同的过程 在边界层之内和之上运行。 这将是 在现有和计划的诊断研究的帮助下， 观测（或分析）风，以及GCM计算。 他们的太平洋耦合模型将扩展到大西洋 和印度洋地区，首先是单独的，最后是作为一个 全球热带耦合模式。 这将包括 陆-气相互作用的参数化， 远被忽视。 他们将努力查明 由地方相互作用引起的气候变率的性质 以及流域间 相互作用修改或增强可变性。 新的参数化将被纳入多- 全球大气模式。 线性的和原始的 将开发方程版本。 显式边界层 物理学将允许更真实地表示实际的 海洋强迫，并允许一个相对无粘性的自由 与之前的模型相比， 长期 与此模型的耦合模拟将用于研究 热带地区低频气候变化的机制。 这个研究项目很重要，因为它将 更清楚地了解全球海洋与海洋环境之间的相互作用， 大气层对气候变化的影响

The PIs will continue, and expand upon, their previous modeling studies of the tropical oceans and atmosphere. A major focus will be the development of an improved atmospheric heating parameterization, taking into account the distinct processes operating within and above the boundary layer. This will be aided by existing and planned diagnostic studies based on observed (or analyzed) winds, as well as GCM calculations. Their Pacific coupled model will be extended to the Atlantic and Indian Ocean sectors, first individually, and finally as a coupled model of the global tropics. This will include parameterizations of land-atmosphere interactions that have thus far been ignored. They will seek to identify the extent and nature of climate variability that arises from local interactions within each oceanic sector, and the manner in which inter-basin interactions modify or enhance that variability. The new parameterizations will be incorporated into a multi- level, global atmospheric model. Both linear and primitive equation versions will be developed. Explicit boundary layer physics will permit a more realistic representation of the actual oceanic forcing, and allow for a relatively inviscid free atmosphere, in contrast to their previous model. Long-term coupled simulations with this model will be used to study the mechanisms of low frequency climate change in the tropics. This research project is important because it will shed more light on the role of the coupling between global oceans and the atmosphere on climate variability.