Effects of Cloud and Radiation Processes on the Global Water and Energy Cycle

云和辐射过程对全球水和能源循环的影响

• 批准号: 0935263
• 负责人: Xiaoqing Wu
• 金额: $ 30.83万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0935263&HistoricalAwards=false
• 关键词: Effects; Cloud; Radiation; Processes; Global

Cloud, radiation and precipitation processes are key components of the global water and energy cycle and operate on a wide range of time and space scales. Uncertainties in representing these processes and inadequate understanding of water and energy cycle have been long standing problems for most general circulation models (GCMs). This project aims to investigate the role of cloud, radiation and precipitation processes in the improved climate simulations of global water and energy cycle. The investigator will (a) evaluate modeled dynamic and thermodynamic fields against observations in diurnal and seasonal aspects of temperature, water vapor, cloud amount, liquid and ice water, radiative fluxes, precipitation and surface evaporation, (b) examine the impacts of revised convection closure assumption, triggering mechanism, convective momentum transport and subgrid cloud distribution on the simulations of climate mean state and variability, and (c) assess the water vapor budget and the top of the atmosphere and surface energy budgets during the El Niño and La Niña events in comparison with those under the normal climate conditions.Broader impacts of this work are educational and in improving understanding of physical processes for water and energy cycle in the climate system and representations of cloud and radiation processes in GCMs, which will enhance the credibility of climate prediction and climate change projections made by GCMs and thus benefit society.

云，辐射和降水过程是全球水和能量周期的关键组成部分，并且在广泛的时间和空间尺度上运行。对于大多数一般循环模型（GCM）来说，代表这些过程和对水和能量周期的理解不足的不确定性一直是长期存在的问题。该项目旨在研究云，辐射和降水过程在改善全球水和能源周期的气候模拟中的作用。研究者将（a）评估模型的动态和热力学领域，以在温度，水蒸气，云，云量，液态和冰水，辐射通量，降水和表面蒸发的不同和季节性方面进行观察，（b）检查经过修订的运输率闭合，触发型和替代的均值运输和cllimations climutional of（clligtiment Moment and Simpulations）的影响，并检查了clligiment and Simmulation climutions of（clliment of Simmuntion climents of Claniviate of（Cllid clumitions of）的水平。 vapor budget and the top of the Atmosphere and surface energy budgets during the El Niño and La Niña events in comparison with those under the normal climate conditions.Broader impacts of this work are educational and in improving understanding of physical processes for water and energy cycle in the climate system and representations of cloud and radiation processes in GCMs, which will enhance the credibility of climate prediction and climate change projects made by GCMs and thus benefit society.