Stationary Wave Maintainance and Sensitivity to Climate Change in GCMs

GCM 中的驻波维持和对气候变化的敏感性

• 批准号: 0000585
• 负责人: Mingfang Ting
• 金额: $ 19.9万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-15 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000585&HistoricalAwards=false
• 关键词: Stationary; Wave; Maintainance; Sensitivity; Climate

ATM-0000585Ting, MingfangUniversity of IllinoisTitle: Stationary Wave Maintenance and Sensitivity to Climate Change in GCMsThe primary objective of the proposed work is to understand how climatological stationary waves are maintained in the AMIP-2 participating GCMs and how stationary waves respond to greenhouse gas increases in the atmosphere. A secondary objective is to understand the linkage between the trend in the Arctic Oscillation(AO) which is the leading mode of the month-to-month variability in Northern Hemisphere sea level pressure, and the stationary wave changes in response to green house gas increases. The research is motivated by the fact that stationary waves determine regional climate conditions and are hence a key determinant of regional climate change. Different GCMs tend to give inconsistent regional climate simulations and regional climate predictions. These differences arise primarily because of differences in model physical parameterizations, in particular the convective parameterization schemes. The work is important because it will lead to better understanding into how best to utilize information provided by GCM experiments using greenhouse gas forcing.

ATM-0000585 Ting，Mingfang University of Illinois题目：GCM中的定常波维持和对气候变化的敏感性拟议工作的主要目标是了解气候定常波是如何在AMIP-2参与的GCM中维持的，以及定常波如何对大气中温室气体的增加做出响应。第二个目标是了解北极涛动（AO）趋势（这是北方半球海平面气压逐月变化的主要模式）与响应绿色室内气体增加的驻波变化之间的联系。这项研究的动机是这样一个事实，即驻波决定区域气候条件，因此是区域气候变化的关键决定因素。不同的大气环流模式往往给出不一致的区域气候模拟和区域气候预测。这些差异主要是由于模式物理参数化的差异，特别是对流参数化方案。这项工作是重要的，因为它将导致更好地了解如何最好地利用GCM实验使用温室气体强迫提供的信息。