Three Dimensional Modeling of Dynamical Interactions With Convective, Radiative, and Surface Fluxes Over the Tropical Pacific

热带太平洋上空对流、辐射和地表通量动态相互作用的三维建模

• 批准号: 9319461
• 负责人: Richard Seager
• 金额: $ 11.99万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 1996-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9319461&HistoricalAwards=false
• 关键词: Three; Dimensional; Modeling; Dynamical; Interactions

Abstract ATM-9319461 Seager, R. Zebiak, Stephen E. Columbia University Title: Three Dimensional Modeling of Dynamical Interactions with Convective, Radiative and Surface Fluxes Over the Tropical Pacific This project will concern the interaction between the convective, radiative and surface fluxes over the Pacific sector with an emphasis on the west Pacific. The PIs will use a newly developed, efficient and accurate, global, linear primitive equation model together with parameterizations of moist convection, radiative transfer and boundary layer processes. The ultimate goal of the work is to improve model representation of these processes in order to improve model simulations of the large scale variables (especially near surface properties) necessary for continued progress in simulation and prediction of climate variability on time scales of months to decades. Verification of model physics will hence be based on observations of these processes within the TOGA COARE domain and also on their effect on simulation of the large scale circulation. The PIs are especially interested in being able to model the observed limited scale of convection and convective anomalies, errors in which currently create large errors in modelled surface winds. This work will proceed through experiments with observed SST forcing and through studies of the role of the radiative, convection and surface fluxes in determination of the character and organization of propagating convective disturbances. Another focus of the work will be on the surface energy budget of the west Pacific. The PIs will aim to reconcile estimates of the flux, and its components, derived from the atmospheric modeling work with other estimates derived from ocean SST modeling and with the TOGA COARE data. The various roles of convection, radiation and boundary layer processes in determining the surface flux will be analyzed. This research is important because it seeks to clarify proces ses important for understanding climate variability. It is funded under the TOGA COARE program.

摘要ATM-9319461 Seager，R. 作者：Stephen E. 哥伦比亚大学名称： 三维动力学相互作用模型 对流、辐射和地面通量 热带太平洋 这个项目将涉及太平洋部分对流、辐射和地面通量之间的相互作用，重点是西太平洋。 PI将使用一个新开发的，高效和准确的，全球性的，线性原始方程模型，以及湿对流，辐射传输和边界层过程的参数化。 这项工作的最终目标是改进这些过程的模式表示，以便改进对大尺度变量（特别是近地面特性）的模式模拟，这对于在数月至数十年时间尺度上继续模拟和预测气候变率是必要的。 因此，模式物理的验证将基于TOGA COARE域内对这些过程的观测，以及它们对大尺度环流模拟的影响。 PI特别感兴趣的是能够模拟所观察到的有限规模的对流和对流异常，目前在模拟的地面风中产生很大的误差。 这项工作将通过对观测到的SST强迫进行实验，并通过研究辐射、对流和地面通量在确定传播的对流扰动的性质和组织方面的作用来进行。 这项工作的另一个重点将是西太平洋的表面能量收支。 PI的目的是使从大气模拟工作中得出的通量及其组成部分的估计数与从海洋SST模拟中得出的其他估计数以及TOGA COARE数据相一致。 将分析对流、辐射和边界层过程在确定地面通量方面的各种作用。 这项研究是重要的，因为它试图澄清过程对理解气候变化很重要。 它由TOGA COARE计划资助。