Variability of Tropical Circulation and Climate

PI将继续利用高空数据集，特别是国家环境预测中心-国家大气研究中心(NCAR)40年的再分析、陆地表面站记录和热带海洋的长期船舶观测，继续研究热带气候变异性的环流机制。将研究年周期、年际变化和长期演变。具体任务如下：(A)研究南部和北大西洋振荡的高空机制；(B)通过研究印度洋高空过程，为印度夏季季风降水和东非北部秋季雨季的季节预报提供诊断依据；(C)利用欧洲中期天气预报中心和NCEP-NCAR再分析数据集评估赤道纬向环流；(D)根据诊断方法，开发印度夏季季风降水和东非短雨的气候预报技术；E)利用NCEP-NCAR数据集研究行动中心，特别是北大西洋涛动和东亚气候的长期演变；以及f)继续开展协同活动，包括为美国的热带气象学培训课程作出贡献。

The PI will continue to investigate circulation mechanisms of tropical climate variability, using upper-air data sets, in particular the National Center for Environmental Prediction (NCEP)-National Center for Atmospheric Research (NCAR) 40-year reanalysis, land surface station records and long-term ship observations in the tropical oceans. The annual cycle, interannual variability, and long-term evolution will be examined. Specific tasks are the following: a) to investigate upper-air mechanisms of the Southern and North Atlantic Oscillations;b) to undertake diagnostic basis for seasonal forecasting of the Indian summer monsoon rainfall and boreal autumn rainy season of East Africa by examining upper-air processes in the Indian Ocean; c) to evaluate equatorial zonal circulations using the European Center for Medium Range Weather Forecasting and NCEP-NCAR reanalyses datasets; d) to develop climate prediction techniques for the Indian summer monsoon rainfall and short rains of East Africa based on diagnostic methods;e) to study centers of action, in particular the long-term evolution of the North Atlantic Oscillation and climate of East Asia, using the NCEP-NCAR data set; andf) to continue synergistic activities including contributions to training courses in Tropical Meteorology in the United States.