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首页> 外文期刊>Atmospheric and Climate Sciences >Blocking Anticyclone in the Atlantic Sector of the Arctic as an Example of an Individual Atmospheric Vortex
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Blocking Anticyclone in the Atlantic Sector of the Arctic as an Example of an Individual Atmospheric Vortex

机译：阻塞北极地区的反气旋作为个人大气涡旋的示例

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The task of vortex boundaries setting is one of the most complexes in examination of factors influencing on the vortex (circulation system) development and destruction. In this study a new approach of vortex analysis as a whole system is proposed. It is based on vorticity equation where vorticity (left part of the equation) is defined as time coefficients of EOF-decomposition, which is integrated indexes characterizing individual vortex dynamics. Right part of the vorticity equation depicts internal and external factors influencing on the vortex. It's approbation is done on the example of an arctic-subarctic circulation system including blocking anticyclone in winter 2012 which persisted for a long time over the Atlantic sector of the Arctic and led to the formation of the largest positive air temperature anomalies and the minimum ice cover area in the Barents and Kara seas in the entire history of regular observations. It is shown that the main factor in long-term maintenance of the blocking anticyclone over the Arctic was vorticity advection, which was stabilized by horizontal heat advection.
机译：涡旋边界设定的任务是考察影响涡流（循环系统）开发和破坏的因素中最多的复杂区之一。在这项研究中，提出了作为整个系统的涡流分析的新方法。它基于涡旋性方程，其中涡流（方程的左侧部分）被定义为eof分解的时间系数，这是集成的索引，其表征单个涡流动态。涡旋方程的右侧部分描绘了影响涡旋的内部和外部因素。它的认可是在北极 - 亚神的循环系统的例子上完成，包括在2012年冬季阻断反气旋，这在北极大西洋部门持续了很长时间，并导致形成最大的正气温异常和最小冰盖在常规观测的整个历史中，巴伦和卡拉海的区域。结果表明，在北极堵塞的阻断反周气通阻滞的主要因素是涡旋平流，其通过水平热平面稳定。

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