海洋性大陆区域气候变动及其对亚澳季风环流和中国气候异常影响的机理研究

By employing the statistical and numerical methods, the regional climate variations in key part of Maritime Continent (KMC, hereafter) and their mechanisms in association with the Asian-Australian monsoons along with the monsoonal climate in China will be investigated using both the observational and reanalysis data. All the studies will be conducted mainly for boreal summer. The KMC climate features, which are independent of both ENSO and IOD, in both spatial and temporal will be studied. The comparison will be made between the MC climate conditions with and without occurrences of the events of Indian ocean dipole，or ENSO，or ENSO-Moddoki,or both of them. The changes of diabatic heating will be checked in KMC region. In different background of interdecadal changes in SST, the relationships of KMC climate variations with East Asian and Australian monsoons will be examined. The influences of MC climate variations on climate conditions in China will be also investigated. The results of this research project will be helpful for us to clarify and to understand why and how the MC climate affects the anomalies of Asian monsoon anomalies and the climate variations in China.

项目将通过观测资料分析、动力学诊断和数值试验研究海洋性大陆（Maritime Continent，简称MC）之印度尼西亚及周边区域（MC的核心区域，记为KMC）气候变动规律及其成因以及其与亚澳季风环流特别是东亚季风环流异常的联系，揭示其对中国气候异常的影响。研究将主要针对北半球夏季。项目将在KMC区域气候变量序列中提取出独立于ENSO和IOD信号的分量，研究此分量表征的KMC区域气候变动规律与机理；研究KMC区域气候与太平洋一侧的ENSO和ENSO-Moddoki的联系；研究KMC区域气候与热带印度洋单极模和偶极模气候变动的联系及机理，比较印度洋单极模和ENSO与KMC区域气候变化联系的区别；研究不同年代际背景下KMC区域气候变动与澳洲季风环流的联系及机理；研究KMC区域气候变动与东亚季风和中国气候异常的联系及机理。研究结果将揭示出KMC区域气候变动规律、对亚澳季风环流异常的影响及其机理。