The results of studying the temporal variability of atmospheric circulation in the Western Arctic (the Norwegian and Barents seas) are presented. The daily dataset of Girs-Vangengeim E, W, and C circulation forms for the period of 1891–2016 is used to describe atmospheric circulation. Special attention is given to the estimation of differences in weather conditions during the modern period of warming (1985–2015) and in the period of the first Arctic warming (1920–1950). For the cold (November-March) and warm (April-October) seasons, the trends in the frequency of occurrence of the circulation forms are determined. The occurrence of the number of consecutive days with the same atmospheric circulation form which can be considered as a characteristic of weather stability during the analyzed period of warming, is computed for both seasons. The prevalence of the E circulation form during the warm season is typical of both periods. The modern period of warming in the study area, as compared to the period of the first warming, is characterized by an increase in the occurrence of the C circulation form with a short duration. It is found that the current climate regime is characterized by an increase in surface air temperature against a background of less stable weather conditions.

中文翻译：

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斯匹次卑尔根地区1920-1950年与现代变暖期大气环流的比较

提出了研究北极西部（挪威和巴伦支海）大气环流时间变化的结果。Girs-Vangengeim E，W和C环流形式的每日数据集用于描述1891-2016年期间的大气环流。特别注意估计现代变暖时期（1985-2015年）和第一次北极变暖时期（1920-1950年）期间天气状况的差异。对于寒冷的（11月至3月）和温暖的（4月至10月）季节，确定了循环形式发生频率的趋势。对于两个季节，都计算出具有相同大气环流形式的连续天数的出现，可以将其视为在分析的变暖期间天气稳定性的特征。这两个时期都是典型的暖季E循环形式的流行。与第一次增温期相比，研究区的现代增温期的特点是C循环形式的持续时间增加。已经发现，当前的气候状况的特征是在天气条件较不稳定的背景下地表气温升高。