Abstract
The article analyses the series of annual, monthly and daily air temperatures and annual and monthly rainfall at two meteorological stations in Vela Luka and Korčula on the island of Korčula (Croatia), for which there are long time series of observations. Today’s locations of meteorological stations are only 33.5 km apart. The average annual air temperature at the Vela Luka station is on average 1°C lower than that measured at the Korčula station. A signifi cant upward trend in mean annual and mean monthly air temperatures was observed at both stations, with the increase being much milder at the Vela Luka station. Warming processes are signifi cantly faster at the Korčula station than at the Vela Luka station. Signifi cantly diff erent values of air temperatures, and in particular the fact of diff erent reactions of air temperatures to climate change at two stations, can be explained by their local position in relation to the open sea and orography of the surrounding terrain. While the Vela Luka station is exposed to the open sea and away from the mainland, at Korčula station the impact of the sea is less signifi cant because the sea is located in a narrow channel between the island of Korčula and the Pelješac peninsula. The distance of the Korčula meteorological station from the Pelješac peninsula and the mainland is signifi cantly smaller, which aff ects the faster trend of rising air temperatures at this station than at the Vela Luka station, where the infl uence of the sea mitigates the eff ect of global warming. Orography and proximity to land aff ect signifi cantly higher rainfall occurrences at Korčula station. Average annual rainfall at this station is 231 mm or 27.5% higher than at Vela Luka station. Both stations show a trend of decreasing annual rainfall.
Highlights
The linear correlation coefficients for the series of mean annual data measured at the Vela Luka station are statistically significantly different from zero at the level, p
The average annual air temperature at the Vela Luka station is on average 1°C lower than that measured at the Korčula station
A statistically significant increase in mean annual and mean monthly air temperatures was observed at both stations, it was significantly higher at Korčula station
Summary
The article analyses the series of annual, monthly and daily air temperatures and annual and monthly rainfall at two meteorological stations in Vela Luka and Korčula on the island of Korčula (Croatia), for which there are long time series of observations. These facts certainly have a significant impact on the microclimate of these two weather stations. It is interesting and important to try to study in more detail the dimensions and reasons for the different climatic behaviours at two stations located on a small inhabited island This is the main goal of the analyses performed in this paper. The paper will analyse the series of air temperatures and precipitation measured at the two main meteorological stations of the DHMZ (Croatian Meteorological and Hydrological Service) (Vela Luka and Korčula), which are monitored daily at [7, 14] and 21 o’clock in local time.
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