The atmospheric circulation conditions of the occurrence of heatwaves in Lublin, southeast Poland

Bartoszek, Krzysztof; Krzyżewska, Agnieszka

doi:10.1002/wea.2975

Cited by 17 publications

(14 citation statements)

References 17 publications

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“…These authors adopted a definition of characteristic days based on relative thresholds (the basis was the 95th percentile of T max ), and not on absolute values as in this article, which resulted in showing different rates of change. The increase in the number of warm and hot days has been demonstrated in numerous studies concerning the area of Poland (Ustrnul et al, 2010;Tomczyk, 2014;Owczarek and Filipiak, 2016;Sulikowska et al, 2016;Bartoszek and Krzyżewska, 2017), as well as other European regions (Avotniece et al, 2010;Kundzewicz and Huang, 2010;Kažys et al, 2011;Tomczyk and Bednorz, 2016;Tomczyk and Sulikowska, 2017). The increasing occurrence of warm and hot days has been also translated into the more frequent occurrence of heat waves.…”

Section: Discussion and Summarymentioning

confidence: 93%

“…The increasing occurrence of warm and hot days has been also translated into the more frequent occurrence of heat waves. The changes taking place have been thoroughly documented by research from Poland (Sulikowska et al, 2016;Bartoszek and Krzyżewska, 2017) as well as Europe (Shevchenko et al, 2014;Tomczyk, 2016;Tomczyk and Bednorz, 2016;Spinoni et al, 2015).…”

Section: Discussion and Summarymentioning

confidence: 96%

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Thermal conditions in the summer season on the Polish coast of the Baltic Sea in 1966-2015

Tomczyk¹,

Kendzierski²,

Kugiejko³

et al. 2019

Időjárás

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The Baltic Sea coast is characterized by a large frequency of days with biometeorologically adverse effects. In many Polish and foreign studies there are issues related to the increase in the frequency of warm days, hot days, and heat waves. The present study introduces the characteristics of thermal conditions on the Polish coast in the 1966-2015 multiyear period, as well as the identification of circulation conditions favoring the occurrence of extremely warm periods. The analysis included the maximum temperature data (obtained from five measurement stations), on the basis of which the characteristics such as: average maximum air temperature, sum of maximum air temperatures occurring in summer, warm days (T max >25 °C), hot days and heat waves (T max >30 °C) were determined. The existing thermal classification proposed by Lorenc (2000) was also used in relation to the maximum daily temperature. In addition, there appeared a topic of atmospheric circulation regarding the determination of conditions for the occurrence of exceptionally warm months (mean T max >T s +1.5σ). The research results indicate an increase in the average maximum temperature (T max) in the summer season in 1966-2015. The changes are particularly visible in the western part of the research area (0.43 °C/10 years). Furthermore, the observed warming was translated into a higher occurrence of warm and hot days, which was discussed by other authors in the context of the whole of Poland. The occurrence of exceptionally warm months has reached the maximum frequency in the last 15 years, which is associated with positive anomalies of the sea level pressure and the 500 hPa isobaric surface. Periods of occurrence of the above mentioned anomalies were related to the presence of high pressure systems and the advection of air masses from the eastern sector (according to the presented T850 maps).

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Section: Discussion and Summarymentioning

confidence: 93%

Section: Discussion and Summarymentioning

confidence: 96%

Thermal conditions in the summer season on the Polish coast of the Baltic Sea in 1966-2015

Tomczyk¹,

Kendzierski²,

Kugiejko³

et al. 2019

Időjárás

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“…Atmosphere 2017, 8,191 10 of 17 be weaker at Oxford and Stornoway than the other locations. Overall, the results in Figure 4 suggest that variations in the AMO and summertime NAO moderate the numbers of heat waves, with a higher probability of larger numbers during positive phases of both indices.…”

Section: Effects On Numbers Of Heat Wavesmentioning

confidence: 94%

“…Atmosphere 2017, 8,191 11 of 17 distributions lie above zero. The deviations between the percentile thresholds are probably caused by randomness in sampling the data.…”

Section: Effects On Numbers Of Heat Wavesmentioning

confidence: 98%

“…In the Southern Alpine region, the lengths of the longest heat waves had increased by 2.7 days per century over the period 1874-2015 [7]. A study of heat waves in Lublin, south east Poland [8], used data recorded over . The number of heat waves over this period had not changed, but heat waves after about 1990 had higher maximum temperatures and longer durations.…”

Section: Introductionmentioning

confidence: 99%

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Historical Trends and Variability in Heat Waves in the United Kingdom

et al. 2017

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Increases in numbers and lengths of heat waves have previously been identified in global temperature records, including locations within Europe. However, studies of changes in UK heat wave characteristics are limited. Historic daily maximum temperatures from 29 weather stations with records exceeding 85 years in length across the country were examined. Heat waves were defined as periods with unusually high temperatures for each station, even if the temperatures would not be considered warm in an absolute sense. Positive trends in numbers and lengths of heat waves were identified at some stations. However, for some stations in the south east of England, lengths of very long heat waves (over 10 days) had declined since the 1970s, whereas the lengths of shorter heat waves had increased slightly. Considerable multidecadal variability in heat wave numbers and lengths was apparent at all stations. Logistic regression, using a subset of eight stations with records beginning in the nineteenth century, suggested an association between the Atlantic Multidecadal Oscillation and the variability in heat wave numbers and lengths, with the summertime North Atlantic Oscillation playing a smaller role. The results were robust against different temperature thresholds.

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Heat waves in Central Europe and tropospheric anomalies of temperature and geopotential heights

Tomczyk

Bednorz

2019

Intl Journal of Climatology

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The aim of the article was to provide a detailed analysis of pressure conditions, employing the anomalies of geopotential heights, during the occurrence of heat waves in Central Europe, but also in the days preceding and following their occurrence. The study uses data from 1966 to 2015 from the Institute of Meteorology and Water Management—National Research Institute, Deutscher Wetterdienst and the National Centre for Environmental Prediction/National Centre for Atmospheric Research (NCEP/NCAR). A heat wave was defined as a sequence of at least 3 days with a maximum daily air temperature of >30°C. The study showed an increase in the number of hot days, which was statistically significant in the majority of the area. In the analysed years, an increasing number of heat waves were recorded, and this occurrence was associated with high pressure systems. Anticyclonic blocking in the summer inhibits the zonal flow of air masses and intensifies meridional flow, which in Central Europe in the summer means the presence of polar continental and tropical air masses. During heat waves, there were positive anomalies of isobaric surface heights over the study area with a maximum in the upper troposphere. On average, anomalies at the 300 hPa pressure level began to form over the Atlantic Ocean. Determining atmospheric preconditions of persisting blocking events in summer resulting in heat waves may be helpful in predicting thereof.

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The atmospheric circulation conditions of the occurrence of heatwaves in Lublin, southeast Poland

Cited by 17 publications

References 17 publications

Thermal conditions in the summer season on the Polish coast of the Baltic Sea in 1966-2015

Thermal conditions in the summer season on the Polish coast of the Baltic Sea in 1966-2015

Historical Trends and Variability in Heat Waves in the United Kingdom

Heat waves in Central Europe and tropospheric anomalies of temperature and geopotential heights

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