Major Extratropical Cyclones of the Northwest United States: Historical Review, Climatology, and Synoptic Environment
Major Extratropical Cyclones of the Northwest United States: Historical Review, Climatology, and Synoptic Environment
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美国西北部主要温带气旋：历史回顾、气候学和天气环境
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
B. Dotson
中科院分区：
文献类型：
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作者：
C. Mass;B. Dotson
摘要 美国西北部经常受到强烈的中纬度气旋的袭击，这些气旋可以产生飓风级的大风并造成广泛的破坏。本文首先回顾了这些风暴，首先回顾了上个世纪的重大事件。介绍了从俄勒冈州南部到华盛顿州北部地区的强风暴气候学，并用于创建天气合成图，显示与此类风暴相关的大规模演变。详细描述了最近发生的事件，即 2006 年 12 月的光明节前夕风暴，特别关注了向后弯曲的前缘/槽的影响以及垂直稳定性和结构的时间变化。讨论部分研究了弯曲槽的一般作用、此类风暴与地形的相互作用以及“刺射流”概念模型的适用性。提出了西北风暴事件演变的概念模型。
Abstract The northwest United States is visited frequently by strong midlatitude cyclones that can produce hurricane-force winds and extensive damage. This article reviews these storms, beginning with a survey of the major events of the past century. A climatology of strong windstorms is presented for the area from southern Oregon to northern Washington State and is used to create synoptic composites that show the large-scale evolution associated with such storms. A recent event, the Hanukkah Eve Storm of December 2006, is described in detail, with particular attention given to the impact of the bent-back front/trough and temporal changes in vertical stability and structure. The discussion section examines the general role of the bent-back trough, the interactions of such storms with terrain, and the applicability of the “sting jet” conceptual model. A conceptual model of the evolution of Northwest windstorm events is presented.