A Study of the Katabatic Wind Confluence Zone Near Siple Coast, West Antarctica

9417983 Thiq项目是一个研究瞬态天气系统与南极洲东部西普尔海岸内陆地面下降风系统的动态相互作用的项目。 西普尔海岸的地形将来自内陆的冷空气引导到强烈而持续的下降气流中，这些气流从罗斯冰架上流出。 天气尺度气旋风暴的周期性通过影响表面风流的结构和行为，通过加强表面流到浪涌事件，延伸多达一千英里的罗斯冰架，和下降风可能会影响气旋风暴的生成，通过形成一个强烈的斜压区的冰架。 该项目将综合九个自动气象站网络的观测结果、多光谱卫星图像和数值模拟，目的是测试和阐述先前对下降风动力学调查所建立的假设。 要处理的具体方面包括南极洲西部和东部下降流的相对重要性、对压力梯度和云辐射强迫的影响的评价以及下降流场与中尺度气旋的相互作用。 ***

9417983 Thiq project is a study of the dynamic interaction of transient weather systems with the surface katabatic wind system inland from the Siple Coast in East Antarctica. The topography of the Siple Coast channels the cold air from the interior into intense and persistent streams of katabatic winds which flow out over the Ross Ice Shelf. The periodic passage of synoptic-scale cyclonic storms affects the structure and behavior of the surface wind streams by reinforcing the surface flow into surge events, extending for as much as a thousand miles across the Ross Ice Shelf, and the katabatic winds may affect the generation of cyclonic storms by forming a strongly baroclinic zone on the Ice Shelf. This project will integrate observations from a network of nine automatic weather stations, multi-spectral satellite imagery, and numerical modeling with the goal of testing and elaborating upon hypotheses established from prior investigations of the dynamics of katabatic winds. Specific aspects to be addressed include the relative importance of katabatic flows in West and East Antarctica, evaluation of the impacts of pressure gradient and cloud- radiative forcing, and the interaction of the katabatic flow field with mesoscale cyclones. ***