Cumulus Convection and Climate Dynamics

积云对流和气候动力学

• 批准号: 9814120
• 负责人: Nilton Renno
• 金额: $ 13.26万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-15 至 2001-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814120&HistoricalAwards=false
• 关键词: Cumulus; Convection; Climate; Dynamics

Dr. Renno seeks to identify the relative importance of various mechanisms that may be responsible for the large-scale variability of the tropical atmosphere. In addition to evaluating a number of theories of mechanisms that affect moist convective waves (such as wave-CISK and WISHE), he will also explore a new theory of his own, Asymmetric Opacity Instability. His strategy is to employ different cumulus parameterization schemes as a means of eliminating certain mechanisms from a particular simulation. The various mechanisms will be examined in relation to tropical waves in general, and the Madden-Julian Oscillation in particular, in a series of idealized GCM simulations. If time allows, the PI also intends to compare his model results with ECMWF gridded analyses. This project will be carried out in collaboration with Dr. Isaac Held of the Geophysical Fluid Dynamics Laboratory.

雷诺博士试图确定可能导致热带大气大范围变化的各种机制的相对重要性。除了评估一些影响湿对流波机制的理论(如WAVE-CISK和WISHE)外，他还将探索自己的一种新理论--不对称不透明不稳定性。他的策略是采用不同的积云参数化方案，作为从特定模拟中消除某些机制的一种手段。在一系列理想化的GCM模拟中，将研究与热带波有关的各种机制，特别是Madden-Julian振荡。如果时间允许，PI还打算将他的模型结果与ECMWF网格分析进行比较。该项目将与地球物理流体动力学实验室的艾萨克·赫尔德博士合作进行。