Extreme Heat Waves and Extreme Summer Seasons in European Russia

IF 1.4 4区地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES Russian Meteorology and Hydrology Pub Date : 2024-08-29 DOI:10.3103/s1068373924060013

M. Yu. Bardin, T. V. Platova, O. F. Samokhina

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Abstract

In the study, the large-scale heat waves manifested in one or more latitudinal zones of European Russia: south of 50° N, within 50°–60° N, and north of 60° N are considered. For each zone, the changes in the total seasonal duration of heat waves since the beginning of the 20th century and associated changes in the average seasonal temperature in the region are analyzed. For the periods 1901–1960 and 1961–2020, the total number of waves for different gradations of their duration has been obtained. A catalog of the largest (extreme) heat waves with a duration of three weeks or more with possible transitions between the zones has been compiled: there has been only 11 such waves since the beginning of the 20th century, including 6 waves after 2000. For these heat waves, their correspondence to the phases of the EA/WR, AMO, and PDO climate modes was analyzed. For three of them (1972, 2010, and 2016), the description of the geographical structure (temperature, mid-tropospheric circulation) and evolution according to the data on the circulation in the middle (including the correspondence to the episodes of anticyclonic quasistationary circulation (AQC)) and upper troposphere was performed. It has been found that at the stage when the tropospheric ridge over European Russia penetrates into high latitudes, additional blocking structures similar to the Rossby wave breaking appear, which seemingly prolong the persistence of the AQC region over European Russia.

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欧洲俄罗斯的极端热浪和极端夏季

摘要在本研究中，考虑了在俄罗斯欧洲一个或多个纬度区（北纬 50°以南、北纬 50°-60°以内和北纬 60°以北）出现的大规模热浪。对于每个纬度带，分析了自 20 世纪初以来热浪季节总持续时间的变化以及该地区季节平均气温的相关变化。在 1901-1960 年和 1961-2020 年期间，获得了不同持续时间等级的热浪总数。我们编制了一份持续时间为三周或更长的最大（极端）热浪目录，这些热浪有可能在不同区域间转换：自 20 世纪初以来，仅出现过 11 次这样的热浪，包括 2000 年后的 6 次热浪。对于这些热浪，分析了它们与 EA/WR、AMO 和 PDO 气候模式阶段的对应关系。对于其中的三个热浪（1972 年、2010 年和 2016 年），根据中层环流（包括与反气旋准静止环流（AQC）事件的对应关系）和对流层上层环流的数据，对其地理结构（温度、对流层中层环流）和演变进行了描述。研究发现，在俄罗斯欧洲上空的对流层脊深入高纬度的阶段，出现了类似于罗斯比波断裂的附加阻塞结构，这似乎延长了俄罗斯欧洲上空反气旋准静止环流区域的持续时间。

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来源期刊

Russian Meteorology and Hydrology METEOROLOGY & ATMOSPHERIC SCIENCES-

CiteScore

1.70

自引率

28.60%

发文量

审稿时长

4-8 weeks

期刊介绍： Russian Meteorology and Hydrology is a peer reviewed journal that covers topical issues of hydrometeorological science and practice: methods of forecasting weather and hydrological phenomena, climate monitoring issues, environmental pollution, space hydrometeorology, agrometeorology.