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Observed changes in extreme precipitation in Poland: 1991-2015 versus 1961-1990

Urheber*innen

Pińskwar,  I.
External Organizations;

Chorynski,  A.
External Organizations;

Graczyk,  D.
External Organizations;

/persons/resource/zbyszek

Kundzewicz,  Zbigniew W.
Potsdam Institute for Climate Impact Research;

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Zitation

Pińskwar, I., Chorynski, A., Graczyk, D., Kundzewicz, Z. W. (2019): Observed changes in extreme precipitation in Poland: 1991-2015 versus 1961-1990. - Theoretical and Applied Climatology, 135, 1-2, 773-787.
https://doi.org/10.1007/s00704-018-2372-1


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_23560
Zusammenfassung
Several episodes of extreme precipitation excess and extreme precipitation deficit, with considerable economic and social impacts, have occurred in Europe and in Poland in the last decades. However, the changes of related indices exhibit complex variability. This paper analyses changes in indices related to observed abundance and deficit of precipitated water in Poland. Among studied indices are maximum seasonal 24-h precipitation for the winter half-year (Oct.–March) and the summer half-year (Apr.–Sept.), maximum 5-day precipitation, maximum monthly precipitation and number of days with intense or very intense precipitation (respectively, in excess of 10 mm or 20 mm per day). Also, the warm-seasonal maximum number of consecutive dry days (longest period with daily precipitation below 1 mm) was examined. Analysis of precipitation extremes showed that daily maximum precipitation for the summer half-year increased for many stations, and increases during the summer half-year are more numerous than those in the winter half-year. Also, analysis of 5-day and monthly precipitation sums show increases for many stations. Number of days with intense precipitation increases especially in the north-western part of Poland. The number of consecutive dry days is getting higher for many stations in the summer half-year. Comparison of these two periods: colder 1961–1990 and warmer 1991–2015, revealed that during last 25 years most of statistical indices, such as 25th and 75th percentiles, median, mean and maximum are higher. However, many changes discussed in this paper are weak and statistically insignificant. The findings reported in this paper challenge results based on earlier data that do not include 2007–2015.