Meteorologists studied temperature differences in Bratislava

Staff of the Slovak Hydrometeorological Institute (SHMÚ) and his colleagues at the Soil and Soil Protection Research Institute (VÚPOP) studied the thermal island of the city, the difference in air temperature compared to the surrounding rural country.

Climatologists carried out measurements on July 12 in several places reflecting the diversity of the environment in Bratislava, and in terms of urban climate, it was relatively homogeneous areas such as buildings, urban greenery , forest or highway. "The measurement results show a relatively large variability in the distribution of air temperature in the city and, in some terms, the temperature differences were four degrees Celsius."

"The Slovak national uprising park in Líšči údolí was almost two degrees Celsius colder than Karlová Ves, as was Kuchajda Lake about one degree colder than Ryazanská street. ", explains SHMÚ

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The temperature regime of the city is influenced by the relief of the landscape, the altitude, the orientation of the slopes towards the flanks of the world or the prevailing winds. "One example may be the SNP park, located in a small, narrow valley, where heavier and colder air accumulates under appropriate weather conditions," added SHMU researchers. The knowledge gained should be integrated into the strategy for the development of the capital strategy of Bratislava to support the expansion of green spaces.

The temperature difference is especially pronounced in areas with a high proportion of artificial surfaces such as asphalt, concrete or paving. They have radiative balance conditions different from those of the surrounding countryside. Artificial surfaces accumulate heat during the day and there is little vegetation that can retain water and have a cooling effect. In addition, enclosed spaces between buildings reduce heat loss. The air is affected by the shading of the sky by buildings, but also by the high density of urban or industrial traffic and associated air pollution which has the effect of reducing the quality of life of the city and the city. health and vitality of its inhabitants