东亚中低纬臭氧层演变与环流系统及气候灾害关系的研究

项目名称： 东亚中低纬臭氧层演变与环流系统及气候灾害关系的研究

项目编号： No.41275072

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 郭世昌

作者单位： 云南大学

项目金额： 88万元

中文摘要： 平流层-对流层相互作用(STE)是当今大气科学研究的前沿之一，大气臭氧在其中又扮演者重要的角色，STE对对流层气候有着显著的影响。以往对气候灾害的机制研究多从下垫面热源异常的角度出发，而从大气上界面异常的角度出发开展相应研究的工作尚不多见。本项目拟针对平流层及对流层大气臭氧变化影响东亚热带、副热带地区气候灾害的显著性和复杂性，在加强现有研究基础上，应用数理统计、物理诊断的综合研究方法，判识臭氧时空演化特征；寻找并分析STE的信号；研究Haddley环流、季风活动、副高活动、台风活动等大尺度大气环流系统或天气系统对大气臭氧分布的影响；探索臭氧层异常对东亚热带副热带地区气候灾害的影响，获得相应的物理过程；进一步应用数值模拟方法验证上述物理过程，获得大气臭氧层变化对该地区气候灾害影响的物理机制,以期为应对气候异常及其诱发的灾害提供防灾减灾预案的科学依据。

中文关键词： 大气臭氧；趋势变化；平均经圈环流；温度场；极涡强度

英文摘要： It is known that the Stratosphere and Troposphere Exchange (STE) has an important influence on the tropospheric climate process，in which the atmospheric ozone is a key factor. Up to now, most of the study for climatic disaster mechanism are focused on the earth's surface，such as the heat source abnormity,and the searching for the influence clue from the upper boudary activity is still not enough. Based on our previously work,this study will be aimed at the relationship between stratospheric/ tropospheric ozone change and climatic disaster / circulation over the mid-low latitude region in East Asia. By using the synthetical study methods of mathematical statistics and physical diagnosis, we will discriminate the spatial-temporal distribution of atmospheric ozone in studying region, pick out the signal of STE, study the influence of some synoptic-scall system (such as Hadley cell, Asian monsoon, subtropital high and Typhoon activity) on the ozone distribution,and quest for the relationship between ozone abnormity and climatic disaster in the region. Furthermore, the relevant physical process will be obtained ,and the impact mechanism will be revealed, which can be used to provide the scientific foundation of formulating the plan for the global climate change and the derived issue in disaster prevention and reduc

英文关键词： atmospheric ozone；trend；mean meridional circulation (MMC)；temperature field；The polar vortex intensity (PVI)