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

西太平洋季节和年际时间尺度上的云、海温和地表通量之间的关系

• 批准号: 9319483
• 负责人: Catherine Gautier-Downes
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9319483&HistoricalAwards=false
• 关键词: Relationship; Between; Clouds; SST; Surface

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.

摘要ATM 9319483 Gautier，Catherine加州大学，圣克鲁斯题目：西太平洋地区季节和年际时间尺度上云、SST和地表通量之间的关系本提案的目标是有助于澄清云在西太平洋地区具有气候意义的空间和时间尺度上对地表辐射和潜热通量的作用。到目前为止，现有的数据还不允许我们明确地估计热带地区海气相互作用中起主导作用的机制的大小和变化。例如，关于热带海洋表面温度维持在西太平洋观测温度的机制，存在着相互竞争的理论。我们的建议有三个目标。首先，我们将计算云和表面（短波辐射和潜热）通量从卫星观测使用技术，我们已经开发或从其他研究人员改编。第二，我们将把我们的卫星结果与地面和飞机观测结果相互比较，以确保卫星得出的地面通量的质量。第三，这是oup建议的核心，我们将调查云对地面通量（包括SST）在气候上显着的空间和时间尺度的影响。我们的方法广泛使用卫星数据来提供大规模的框架，它也建立在TOGA- COARE数据的可用性，以验证我们的卫星数据和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。从这项研究的结果，预计将导致更好地了解一些控制海气相互作用的机制，因此，应有助于发展新的参数化的层次结构的数值模型，旨在模拟耦合的大气-海洋系统在热带地区的季节到年际的时间尺度。