Influence of atmospheric blocking on solar radiation and maximum temperature in Poland during summer (1971–2023)

IF 4.5 2区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES

Atmospheric Research Pub Date : 2025-05-26 DOI:10.1016/j.atmosres.2025.108242

Krzysztof Bartoszek , Dorota Matuszko

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Abstract

The study aimed to assess the impact of blocking situations (BS) on maximum air temperature (T_max) and the daily sum of solar radiation (DSSR) in Poland during the summer months (June–August) from 1971 to 2023. The results indicate an increasing trend in the frequency of BS days, particularly in southern Poland, with statistically significant upward tendencies. However, multi-decadal variability is also evident, with periods of more and less frequent BS occurrences. On average, BS occurred for 3–8 days per summer, varying by region, while in extreme years (e.g., 2015), over 20 BS days were recorded in southern Poland. During all BS days, T_max anomalies averaged up to 7 °C, and DSSR anomalies reached as high as +6 MJ·m⁻²·day⁻¹ relative to multi-year averages. A strong correlation was found between the number of BS days and T_max (r = 0.57, p < 0.001), as well as DSSR (r = 0.55, p < 0.001). Interestingly, smaller temperature anomalies were recorded near the Baltic coast, likely due to the moderating influence of sea breezes. These findings underscore the spatial variability of BS and their pivotal role in driving extreme weather conditions in Poland.

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大气阻塞对波兰夏季太阳辐射和最高温度的影响（1971-2023年）

本研究旨在评估阻塞情况（BS）对波兰1971 - 2023年夏季（6 - 8月）最高气温（Tmax）和日太阳辐射总和（DSSR）的影响。结果表明，BS天的频率呈增加趋势，特别是在波兰南部，具有统计学上显著的上升趋势。然而，多年代际变率也很明显，BS发生的频率有高有低。平均而言，每年夏季BS发生3-8天，因地区而异，而在极端年份（如2015年），波兰南部记录的BS天数超过20天。在所有BS天内，Tmax异常平均高达7°C， DSSR异常相对于多年平均值高达+6 MJ·m−2·day−1。BS天数与Tmax有很强的相关性(r = 0.57, p <；0.001)，以及DSSR (r = 0.55, p <；0.001)。有趣的是，波罗的海海岸附近记录的温度异常较小，可能是由于海风的缓和影响。这些发现强调了BS的空间变异性及其在驱动波兰极端天气条件方面的关键作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Atmospheric Research 地学-气象与大气科学

CiteScore

9.40

自引率

10.90%

发文量

460

审稿时长

47 days

期刊介绍： The journal publishes scientific papers (research papers, review articles, letters and notes) dealing with the part of the atmosphere where meteorological events occur. Attention is given to all processes extending from the earth surface to the tropopause, but special emphasis continues to be devoted to the physics of clouds, mesoscale meteorology and air pollution, i.e. atmospheric aerosols; microphysical processes; cloud dynamics and thermodynamics; numerical simulation, climatology, climate change and weather modification.