Badania Fizjograficzne, Seria A, Tom 66, 2015

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Analiza wybranych sytuacji synoptycznych związanych z ekstremalnym opadem w latach 2011-2013 nad obszarem Łodzi
(Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk, 2015) Radziun, Wojciech
The aim of the study is to analyse the maximum daily rainfall during selected synoptic situations in summer from the period 2011–2013 in Łódź. In this study, data collected from fourteen rain gauges belonging to the Łódź Infrastructure Company were used. The measurement sites were evenly distributed within the city and rainfall was recorded every 5 minutes. The study analysed five synoptic situations during which the observed day totals in the city exceeded 20 mm. The highest rainfall in Łódź occured during days featuring the passage of weather fronts, mostly cold. The maximum rainfall was observed in the southern or south-western part of the city. In four cases, south-western cyclonic circulation occurred, and in such conditions the highest rainfall was recorded in the southern part of the city and diminished towards the north. This unusual trend may be related to the terrain elevation, as the terrain in Łódź slopes north-east to southwest.