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    Precipitation and other atmospheric phenomena in the central and north-eastern parts of former Poland from 1658 to 1667

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    Ponencia presentada en: VI Congreso Internacional de la Asociaci贸n Espa帽ola de Climatolog铆a celebrado en Tarragona del 8 al 11 de octubre de 2008.[ES]En este articulo se presenta la reconstrucci贸n de algunos fen贸menos atmosf茅ricos (precipitaci贸n, tormentas, nieblas) en la Comunidad Polaco-Lituana para el periodo 1658-1667 basada en el diario escrito de Jan Antoni Chrapowicki. Las anotaciones meteorologicas diarias realizadas durante este periodo permiten el calculo de las frecuencias para algunos de los fen贸menos investigados. Para prop贸sitos del an谩lisis, las frecuencias mensuales, estacionales y anuales de la ocurrencia de d铆as con precipitaci贸n, tormentas, granizadas y nieblas han sido calculadas. La evoluci贸n anual de la frecuencia de ocurrencia de estas variables revelan los mismos patrones que en el clima actual. Tampoco hay cambios significativos entre el periodo hist贸rico y el actual en el numero de dias al a帽o con precipitaci贸n y granizo. Por otro lado, los valores absolutos de d铆as con tormentas y nieblas fueron apreciablemente m谩s bajos en el per铆odo del estudio que en la actualidad. Parece que esta diferencia puede ser explicada, por lo menos parcialmente, por el hecho de que el clima de Polonia en el siglo XVII fue m谩s fr铆o y m谩s continental.[EN]The paper presents a reconstruction of some weather phenomena (precipitation, thunderstorms, hailstorms, fogs) in the Polish-Lithuanian Commonwealth for the period 1658-1667 based on a diary written by Jan Antoni Chrapowicki. Daily weather notes made by him during this period permitted the reliable calculation of frequencies for at least for some of the weather phenomena which were investigated. For purposes of analysis, the monthly, seasonal, and annual frequencies of occurrence of days with precipitation, thunderstorms, hailstorms and fogs have been counted. The annual courses of frequency of occurrence of these variables reveals the same pattern of changes as in today鈥檚 climate. Also there are no significant changes between the annual number of days with precipitation and hailstorms in the historical and present-day periods. On the other hand, absolute values of days with thunderstorms and fogs were significantly lower in the study period than they are today. It seems that this difference can be explained, at least partially, by the fact that the climate of Poland in the 17th century was colder and more continental than .The research in the present paper was funded by a grant obtained from the State Committee for Scientific Research (grant no. N306 018 32/1027). We would like to thank John Kearns for assistance with the English
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