Dynamics of the Boreal Summer Intraseasonal Oscillation: Multiscale Interactions

这个项目研究了北方夏季季节内振荡(BSISO)，这是一种热带模式，在大空间范围内的降水、云量和风的变化。这项工作考察了BSISO对亚洲夏季风的影响，以及这种影响可以预测的程度。这项研究还考虑了BSISO和准双周(QBW)振荡之间的关系，这是很有意义的，因为BSISO和QBW振荡的综合活动与印度北部的干旱和洪水有关。BSISO可以被认为是云系和降水的一个大的缓慢移动的包层，工作的一个具体焦点是来自BSISO内的云系的高层热量和动量输送在多大程度上负责它的发展和传播。这项研究将结合统计诊断分析、全球云分解模式和海-气耦合大气环流模式进行。BSISO被认为对确定亚洲季风的活动和间歇期很重要，因此对地球上一个大而人口稠密的地区可能具有重要的农业意义。更好地了解BSISO可能会改善对南亚和东南亚的降水、洪水和干旱的预报。此外，该项目还为一名博士后研究员提供支持和培训，从而为这一领域的科学工作队伍的发展提供支持。

This project examines the Boreal Summer Intraseasonal Oscillation (BSISO), a tropical mode of variation in precipitation, cloudiness, and winds of large spatial extent. The work examines the impact of the BSISO on the Asian summer monsoon and the extent to which this impact is predictable. The research also considers the relationship between the BSISO and the Quasi-Biweekly (QBW) Oscillation, which is of interest because the combined activity of the BSISO and QBW oscillation is associated with droughts and floods over northern India. The BSISO can be regarded as a large and slow moving envelope of cloud systems and precipitation, and a specific focus of the work is the extent to which upscale transports of heat and momentum from the cloud systems within the BSISO are responsible for its development and propagation. The research will be conducted using a combination of statistical diagnostic analysis, experiments with a global cloud resolving model, and a coupled ocean-atmosphere general circulation model.The BSISO is thought to be important for determining the active and break periods of the Asian monsoon and may thus be of great agricultural importance for a large and densely populated region of the earth. A better understanding of the BSISO may lead to improvements in forecasts of precipitation, floods, and droughts for South and Southeast Asia. in addition, the project provides support and training for a postdoctoral researcher, thereby providing for the development of the scientific work force in this area.