Search results for: Ewa Bednorz

Items from 1 to 20 out of 30 results

article

Climatology and extreme cases of sea‐effect snowfall on the southern Baltic Sea coast

Ewa Bednorz, Bartosz Czernecki, Arkadiusz M. Tomczyk

International Journal of Climatology > 42 > 11 > 5520 - 5534

Heavy snowfall events of possible sea‐effect origin, occurring on the southern Baltic Sea coast, are described in this study. The analysed region is not very snowy, with an average of 40 days with snow cover in the winter season and a mean maximum snow depth of 8–12 cm. Twenty‐five snowfall events were selected using the threshold of 20 cm/2 days (i.e., 20 cm of snow depth increase during 2 days),...

article

Projections of changes in maximum air temperature and hot days in Poland

Arkadiusz Marek Tomczyk, Mikołaj Piniewski, Mohammad Reza Eini, Ewa Bednorz

International Journal of Climatology > 42 > 10 > 5242 - 5254

The aim of the study was to determine changes in maximum air temperature (Tmax) in summer, and occurrence of hot days in the period 1966–2020, as well as to forecast the direction and rate of changes in near and far future. The research showed an increase in Tmax in the summer season. In the analysed period, the changes intensified over the last 20 years, as suggested by, among others, the occurrence...

article

The effect of circulation conditions on the occurrence of cold episodes in summer in Central Europe

Arkadiusz M. Tomczyk, Agnieszka Sulikowska, Ewa Bednorz, Andreas Matzarakis

The Geographical Journal > 188 > 1 > 42 - 56

The aims of the study were to assess the multiannual variability and trends of cold episodes in summer in Central Europe and to determine circulation conditions favouring their occurrence. The research was conducted based on data obtained for stations from Germany and Poland during the period 1966–2015. Cold episodes were understood as single cold days and cold spells. A cold day is defined as a day...

article

Human‐biometeorological conditions during heat waves in Poland

Arkadiusz M. Tomczyk, Ewa Bednorz, Andreas Matzarakis

International Journal of Climatology > 40 > 12 > 5043 - 5055

The primary objective of the paper was the description of human‐biometeorological conditions during heat waves in Poland in the years 1966–2018. The description is based on the human‐biometeorological index Physiologically Equivalent Temperature (PET). The research was based on data obtained from the Institute of Meteorology and Water Management—National Research Institute for 30 stations in Poland...

article

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

Arkadiusz M. Tomczyk, Ewa Bednorz

International Journal of Climatology > 39 > 11 > 4189 - 4205

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...

article

Cold spells in Poland and Germany and their circulation conditions

Arkadiusz M. Tomczyk, Ewa Bednorz, Agnieszka Sulikowska

International Journal of Climatology > 39 > 10 > 4002 - 4014

The primary objective of this paper was to determine the circulation conditions of the occurrence of cold spells in Poland and Germany. The observed inconsiderable warming slightly contributed to a change in the number of cold days and cold spells. The occurrence of cold spells in Poland and Germany was related to considerably more active and intensive pressure systems than on average in the winter...

article

Effect of teleconnection patterns on ice conditions in lakes in lowland Poland

Mariusz Ptak, Arkadiusz M. Tomczyk, Dariusz Wrzesiński, Ewa Bednorz

Theoretical and Applied Climatology > 2019 > 138 > 3-4 > 1961-1969

Ice conditions in lakes are one of the basic factors considerably affecting the functioning of lake ecosystems, and the term of ice end modifies the course of further processes (thermal stratification, biological conditions, etc.) occurring outside the winter season. The paper presents the analysis of the effect of teleconnection patterns (NAO, SCAND, EA, EAWR) on ice conditions in lakes in North...

article

Atmospheric circulation conditions during winter warm spells in Central Europe

Arkadiusz M. Tomczyk, Agnieszka Sulikowska, Ewa Bednorz, Marek Półrolniczak

Natural Hazards > 2019 > 96 > 3 > 1413-1428

The objective of the paper was to characterise the temporal and spatial variability of winter warm spells in Central Europe in the years 1966/1967–2015/2016 and to determine the circulation conditions of their occurrence. The applied data were obtained from the Polish Institute of Meteorology and Water Management, Deutscher Wetterdienst and the National Centre for Environmental Prediction/National...

article

Review of Polish contribution to snow cover research (1880–2017)

Małgorzata Falarz, Marek Nowosad, Ewa Bednorz, Sipra Rasmus

Quaestiones Geographicae > 2018 > 37 > 1 > 7-22

The purpose of this article is to present the development of multifaceted research on snow cover conducted by Polish researchers in various parts of the world since the end of the 19th century up to the modern times. The paper describes Polish studies on physical and chemical properties of snow cover, its long-term changes, relationships between snow cover and climate, impact of snow cover on environmental...

article

Strong heat and cold waves in Poland in relation with the large-scale atmospheric circulation

Arkadiusz M. Tomczyk, Ewa Bednorz, Marek Półrolniczak, Leszek Kolendowicz

Theoretical and Applied Climatology > 2019 > 137 > 3-4 > 1909-1923

Occurrence of heat and cold waves in Poland in the years 1966–2015 (1966/1967–2015/2016) was described, and their circulation conditions were determined in this study. A heat wave is defined as a period of at least 3 days with Tmax > 30.0 °C and a cold wave as a period of at least 3 days with Tmax <− 10.0 °C. Heat waves occurred most often in central and southern Poland and cold waves in north-eastern...

article

The effect of macro-scale circulation types on the length of the growing season in Poland

Arkadiusz M. Tomczyk, Katarzyna Szyga-Pluta, Ewa Bednorz

Meteorology and Atmospheric Physics > 2019 > 131 > 5 > 1315-1325

The main objective of the article was to determine the impact of macro-scale circulation types on the beginning and end of the growing season in Poland in 1966–2015. The data concerning average daily air temperature for 30 stations from the period of 1966–2015 were used. Data were obtained from the databases of the Institute of Meteorology and Water Management—National Research Institute. The period...

article

If not NAO then what?—regional circulation patterns governing summer air temperatures in Poland

Ewa Bednorz, Bartosz Czernecki, Arkadiusz M. Tomczyk, Marek Półrolniczak

Theoretical and Applied Climatology > 2019 > 136 > 3-4 > 1325-1337

The correlation between the daily/monthly North Atlantic Oscillation (NAO) index and the daily/monthly anomalies of the summer (JJA) surface air temperatures in Poland is close to 0.00, being positive in most of the country (but hardly exceeding 0.15) and negative in the southeast. Therefore, the regional scale circulation patterns other than NAO were determined using principal component analysis...

article

Review of Polish contribution to snow cover research (1880–2017)

Małgorzata Falarz, Marek Nowosad, Ewa Bednorz, Sipra Rasmus

Quaestiones Geographicae > 2018 > 37 > 1 > 7-22

article

Human-biometeorological conditions in the southern Baltic coast based on the universal thermal climate index (UTCI)

Leszek Kolendowicz, Marek Półrolniczak, Katarzyna Szyga-Pluta, Ewa Bednorz

Theoretical and Applied Climatology > 2018 > 134 > 1-2 > 363-379

The paper focuses on bioclimatic conditions in the southern part of the Baltic coast based on universal thermal climate index values. Taking into consideration the observational data from coastline stations as well as reanalysis data from the National Center for Environmental Prediction and National Center for Atmospheric Research (sea level pressure and the 500 hPa geopotential height), the authors...

article

Heat waves in Central Europe and their circulation conditions

Arkadiusz M. Tomczyk, Ewa Bednorz

International Journal of Climatology > 36 > 2 > 770 - 782

The research objectives were to describe heat waves (HWs) in Central Europe and define the synoptic situations that cause their occurrence. In this article, a hot day was defined as a day when the maximum temperature was above the 95th annual percentile and an HW was considered a sequence of at least five hot days. In the analysed multi‐year period and study area, 11 HWs were observed in the north...

article

Warm spells in Northern Europe in relation to atmospheric circulation

Arkadiusz M. Tomczyk, Piotr Piotrowski, Ewa Bednorz

Theoretical and Applied Climatology > 2017 > 128 > 3-4 > 623-634

This study describes warm spells in Northern Europe and determines the synoptic situations that cause their occurrence. In this article, a relatively warm day was defined as a day when the maximum temperature exceeded the 95th annual percentile, and a warm spell (WS) was considered to be a sequence of at least five relatively warm days. In the analysed multiannual period and within the investigated...

article

Atmospheric conditions governing anomalies of the summer and winter cloudiness in Spitsbergen

Ewa Bednorz, Dominika Kaczmarek, Przemysław Dudlik

Theoretical and Applied Climatology > 2016 > 123 > 1-2 > 1-10

The study is based on data concerning cloudiness for the years 1981–2010 from Svalbard Lufthavn. Atmospheric circulation was characterized using a catalogue of circulation types developed by Niedźwiedź (2013) and average daily values of atmospheric pressure. Intensive cyclogenesis taking place over the north Atlantic expressed by lower-than-normal sea level pressure (SLP), particularly over the Fram...

article

Atmospheric conditions controlling extreme summertime evapotranspiration in Poland (central Europe)

Paweł Bogawski, Ewa Bednorz

Natural Hazards > 2016 > 81 > 1 > 55-69

Extremely high evapotranspiration may constitute a threat to agriculture and to water storage, supply, management and quality. To better understand the occurrence of high evapotranspiration, our goals were to (1) document the synoptic conditions favorable for extreme evapotranspiration and (2) determine the anomalies in the factors that directly affect extremely high evapotranspiration on a daily...

article

Circulation patterns governing October snowfalls in southern Siberia

Ewa Bednorz, Joanna Wibig

Theoretical and Applied Climatology > 2017 > 128 > 1-2 > 129-139

This study is focused on early fall season in southern Siberia (50–60 N) and is purposed as a contribution to the discussion on the climatic relevance of October Eurasian snow cover. Analysis is based on the daily snow depth data from 43 stations from years 1980–2012, available in the database of All-Russian Research Institute of Hydrometeorological Information—World Data Centre. The snow cover season...

article

Comparison and Validation of Selected Evapotranspiration Models for Conditions in Poland (Central Europe)

Paweł Bogawski, Ewa Bednorz

Water Resources Management > 2014 > 28 > 14 > 5021-5038

The FAO-56 Penman-Monteith (PMF56) model is accepted as the standard method for estimating reference crop (grass) evapotranspiration. However, poor data availability limits the use of this method in many regions. This study aimed to overcome this limitation (1) by evaluating the goodness-of-fit of selected simple evapotranspiration methods in relation to the PMF56 model and (2) by adjusting four of...

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INFONA - science communication portal

Search results for: Ewa Bednorz

Climatology and extreme cases of sea‐effect snowfall on the southern Baltic Sea coast

Projections of changes in maximum air temperature and hot days in Poland

The effect of circulation conditions on the occurrence of cold episodes in summer in Central Europe

Human‐biometeorological conditions during heat waves in Poland

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

Cold spells in Poland and Germany and their circulation conditions

Effect of teleconnection patterns on ice conditions in lakes in lowland Poland

Atmospheric circulation conditions during winter warm spells in Central Europe

Review of Polish contribution to snow cover research (1880–2017)

Strong heat and cold waves in Poland in relation with the large-scale atmospheric circulation

The effect of macro-scale circulation types on the length of the growing season in Poland

If not NAO then what?—regional circulation patterns governing summer air temperatures in Poland

Review of Polish contribution to snow cover research (1880–2017)

Human-biometeorological conditions in the southern Baltic coast based on the universal thermal climate index (UTCI)

Heat waves in Central Europe and their circulation conditions

Warm spells in Northern Europe in relation to atmospheric circulation

Atmospheric conditions governing anomalies of the summer and winter cloudiness in Spitsbergen

Atmospheric conditions controlling extreme summertime evapotranspiration in Poland (central Europe)

Circulation patterns governing October snowfalls in southern Siberia

Comparison and Validation of Selected Evapotranspiration Models for Conditions in Poland (Central Europe)

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