Transformation of Spatial Structure of the Surface Temperature Field in the Northern Hemisphere

• Published in: Izvestiya Rossiiskoi akademii nauk. Seriya geograficheskaya
• Main Authors: N. N. Cheredko, V. A. Tartakovsky, Y. V. Volkov, V. A. Krutikov, Н. Н. Чередько, В. А. Тартаковский, Ю. В. Волков, В. А. Крутиков
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya 2020
• Subjects: согласованность температурных колебаний; climate changes; consistency of temperature fluctuations; Fennoscandia; Greenland; Subarctic
• Online Access: https://izvestia.igras.ru/jour/article/view/1014; https://doi.org/10.31857/S2587556620010057

The selection of informative criteria and objective classification methods is the current task of climatology. In this paper we present the results of the clustering algorithm of climate. The temperature signals are classified by the degree of similarity of the phase modulation characteristics. Different time periods were considered. They correspond to the main trends in the global temperature dynamics. Such an approach may be a variant of the objective dynamic classification of the Northern Hemisphere climate. Data from 818 meteorological stations were used. The transformation of the system and changes in the degree of temperature dynamics’ consistency at different intervals of years are revealed. This made it possible to identify the most sensitive areas of the Northern Hemisphere. In these areas the stations changed its structural affiliation depending on global trends. With increasing global temperature, the structure of the regional fields is changing. Coherence of temperature fluctuations varies. There is a transition of many stations of more northern classes to more southern ones. The most sensitive to global climate trends are the territories of Fennoscandia and Central Europe, Greenland, the Russian Arctic and Subarctic, Florida Peninsula, and stations located in a mountainous terrain Eurasian areas and areas of influence of basic centers of atmospheric action. Выбор информативных критериев и объективных методов классификации остается актуальной задачей климатологии. Исследуются изменения температуры по данным 818 станций Северного полушария за 1955–2011 гг. Приведены результаты климатической кластеризации для разных временных периодов, соответствующих основным тенденциям изменения глобальной температуры, на основе алгоритма, использующего для классификации согласованность изменений фазы колебаний приземной температуры. Степень согласованности оценивалась коэффициентом корреляции между фазами исходных температурных рядов. Выявлено, что на фоне роста глобальной температуры происходит перестройка в ...