Relationship Between Clouds, SST and Surface Fluxes on Seasonal and Interannual Time Scales Over the Western Pacific

9319483大气大气层，Catherine University of California，Santa Cruz标题：西太平洋季节和年际时间尺度上的云、海温和地面通量之间的关系这项提议的目的是有助于澄清云对西太平洋在具有气候意义的空间和时间尺度上的地面辐射和潜热通量的作用。直到最近才有的数据使我们无法毫不含糊地估计热带地区海-气相互作用中起作用的主要机制的大小和可变性。例如，关于将热带海洋表面温度维持在西太平洋观测到的温度的机制，存在相互竞争的理论。我们的建议有三个目标。首先，我们将使用我们开发或改编自其他研究人员的技术，计算来自卫星观测的云和地表(短波辐射和潜热)通量。其次，我们将把我们的卫星结果与地面和飞机观测结果进行相互比较，以确保卫星得出的地面通量的质量。第三，这也是OUP计划的核心，我们将研究云对具有重要气候意义的空间和时间尺度上的地面通量(包括海温)的影响。我们的方法广泛使用卫星数据来提供大规模框架，它还建立在TOGA-COARE数据的可用性基础上，以验证我们的卫星数据并执行一些面向过程的研究。然而，调查将把TOGA-COARE IOP的结果扩展到更长的时间段，以探索季节和年际变化。预计这项研究的结果将有助于更好地理解控制海-气相互作用的一些机制，从而有助于为一系列数值模式制定新的参数化方案，这些模式旨在模拟热带地区从季节到年际时间尺度上的海-气耦合系统。

ABSTRACT ATM 9319483 Gautier, Catherine University of California, Santa Cruz Title: Relationship between Clouds, SST and Surface Fluxes on Seasonal and Interannual Time Scales Over the Western Pacific The goal of this proposal is to contribute to the clarification of the role of clouds on the surface radiation and latent heat flux in the western Pacific over climatologically significant space and time scales. The data available until recently have not allowed us to estimate unambiguously the magnitude and variability of the dominant mechanisms at work in air-sea interactions in the tropical regions. There are, for instance, competing theories regarding the mechanism responsible for the maintenance of tropical sea surface temperatures at their observed temperature in the western Pacific. Our proposal has three objectives. First, we will compute cloud and surface (shortwave radiation and latent heat) fluxes from satellite observations using techniques we have developed or adapted from other investigators. Second, we will intercompare our satellite results with surface and aircraft observations to ensure the quality of the satellite-derived surface fluxes. Third, and this is the heart of oup proposal, we will investigate the effect of clouds on surface fluxes (including SST) over climatologically significant space and time scales. Our approach uses satellite data extensively to provide the large scale framework, and it also builds upon the availability of TOGA- COARE data to validate our satellite data and perform some process- oriented studies. The investigation will, however, extend the results from the TOGA-COARE IOP to longer time periods in order to explore seasonal and interannual variability. Results from this research are expected to lead to a better understanding of some of the mechanisms controlling air-sea interactions and, thus, should help in the development of new parameterizations for a hierarchy of numerical models aimed at simulating the coupled atmosphere-ocean system over seasonal to interannual time scales in the tropical regions.