Analysis of the Influence of Convectively Coupled Atmospheric Waves and Extratropical Rossby Waves on the Structure and Evolution of the Observed Madden Julian Oscillation (MJO)

在热带大气中，在行星尺度到天气尺度上组织的湿深对流与从热带延伸到高纬度以及从热带外延伸到热带的热带外Rossby波一起发展。这种对流被组织成30-60天向东移动的马登-朱利安振荡（MJO）和更高频率的对流耦合大气赤道波。MJO和这些对流耦合波都与对流层外波相互作用。该项目致力于解释这些对流耦合的赤道波和赤道外波如何相互作用，以及如何以导致MJO的一些主要属性的方式破碎波过程。MJO深刻地影响了地球仪周围从热带气旋到过热，寒冷，洪水和干旱等极端天气事件的扩展范围（4天以上）预测。 这项研究将提供深入了解的机制，使MJO与extratrophiles波是与这种极端事件。 因此，这项工作具有广泛的影响。

Moist deep convection organized on planetary to synoptic scales in the tropical atmosphere evolves together with extratropical Rossby waves that extend from the tropics and across high latitudes as well as from the extratropics into the tropics. This convection is organized in part into the 30-60 day eastward-moving Madden-Julian Oscillation (MJO) and higher frequency convectively coupled atmospheric equatorial waves. Both the MJO and these convectively coupled waves interact with extratropical waves. This project endeavors to explain how these convectively coupled equatorial waves and extratropical waves might interact with each other and the wave breaking process in a manner that causes some of the major attributes of the MJO.The MJO profoundly influences extended range (4+ days) prediction of extreme weather events around the globe ranging from tropical cyclones to excessive heat, cold, floods, and droughts. The study will provide insights into the mechanisms whereby the MJO interacts with extratropical waves that are associated with such extreme events. Thus the work has substantial broader impacts.