EN
In the 1990s, the Chair of Climatology of Warsaw University conducted studies of the local climate in the Nida Basin (vicinity of Pińczów). Compared to the neighbouring areas, the researched area is characterised by specific climatic features. At the same time, this is a region with marked differences in the climatic conditions on the local scale. This results from the diversity of substratum formations, presence of large forest complexes, water bodies and areas transformed by man. The study comprised mapping, which produced a map of topoclimates in the 1 :25000 scale. In addition, meteorological observations were carried out, which allowed to develop a qualitative profile of thermal and humidity conditions in the individual units. The impact of the relief and land cover on the spatial differentiation of climate constituents in various synoptic situations was also defined. The main characteristic feature of the region's relief is the wide Nida Valley. As a concave landform, it is susceptible to the downflow of chilled air from the neighbouring areas, as a result forming pockets of chilled air to the point of reaching an inversion of temperature. At the same time, the wet soils occurring in the valley's bottom are characterised by good thermal conductivity, which can result in delaying the beginning of the occurrence of ground thermal inversion and reducing diurnal amplitude of ground and air temperature. The Pińczów and the Wodzisław hummocks surrounding the valley do not represent so spatially condensed topoclimatic units, which is due to the varied exposure and steepness of slopes, as well as to its surface formations. It is primarily the slopes of the Pińczów Hummock that enjoy favourable thermal conditions. The spacious forest complexes, which occupy large areas on the slopes of both hummocks and smaller ones in the Nida Valley, provide an additional diversity to the topoclimatic conditions.