The Arctic Tropopause Fold
The Arctic Tropopause Fold
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北极对流层顶褶皱
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
A. Krueger
中科院分区：
文献类型：
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作者：
M. Shapiro;T. Hampel;A. Krueger
摘要 利用研究飞机观测、卫星总柱状臭氧反演和天气高空探测的分析来描述北极急流及其相关的锋区和对流层顶褶皱的结构。这些分析记录了北极地区在大规模（约 2000 公里）极地涡旋两侧发生的主要对流层顶折叠事件。一个例子显示极地涡旋及其相关的对流层顶褶皱和北极锋从加拿大北极高纬度向南迁移到北美中部的中纬度地区。与这次迁徙相关的寒冷冷空气爆发是从五大湖到佛罗里达州南部记录的每日最低气温记录的一个重要组成部分。总臭氧测绘光谱仪 (TOMS) 的总柱状臭氧测量结果显示，可识别极地涡旋的位置以及这些涡旋侧面的中尺度 (∼200 km) 臭氧梯度，这些涡旋与极地涡旋的区域一致。
Abstract Analyses of research aircraft observation, satellite total columnar ozone retrievals and synoptic upper-air soundings are used to describe the structure of Arctic jetstreams and their associated frontal zones and tropopause folds. These analyses document the presence of major tropopause folding events within the Arctic that occur at the flanks of large-scale (∼2000 km) polar vortices. One example shows a polar vortex and its associated tropopause fold and Arctic front that migrated from the high Canadian Arctic southward into midlatitudes over central North America. The frigid cold-air outbreak associated with this migration was an important component in the record setting daily minimum temperatures that were recorded from the Great Lakes to southern Florida. Total columnar ozone measurements from the Total Ozone Mapping Spectrometer (TOMS) are shown to identify the location of polar vortices and the mesoscale (∼200 km) ozone gradients at the flanks of these vortices which coincide with regions o...