Izvorni znanstveni članak
Changes of the air temperature and precipitation on the island of Palagruža (1961 – 1990)
Dražen Jašić
Živko Trošić
Josip Kasum
Sažetak
Palagruža, the island located in the middle of the Adriatic, is an ideal island weather station for a study of climatic characteristics of the open part of the Adriatic. In the introduction part, the author gives a short review of the past researches of Palagruža climatic characteristics. Climatic data observed at the Palagruža station, for the standard climatic period 1961 – 1990, were used for the presentations of the time changes of the air temperature and precipitation. In this paper, the analysis is primarly directed to a study of the annualanomalies of the mean daily air temperatures, their range, and precipitation quantity regarding their 30 – year mean value. Linear trends of the anomalies of the mean daily air temperatures, their range, and precipitation quantity, are figured out and represented graphically. The 11 – year binomal sliding mean value is used for filtration of the short – period fluctations. Analysis results show, among other things, a decreasing trend of mean daily air temperatures, their range and annual precipitation quantity. Decreasing trend of the annual mean maximum air tempereature is 1.23 °C/100 year period, of mean minimum ones 0.14 °C/100 - year period and of their range is 1.1 °C/100 - year period. Decreasing trend of the annual mean maximum air temperatures is higher than decreasing trend of the mean minimum air temperatures, causing their range to decrease. Linear trend of the annual precipitation quantity shows a decrease of 205.51 mm/100 - year period. Spearmans statistic`s show that neither of the trends noted above is statistically significant to to the reliability level of 95 %.
Ključne riječi
anomaly; climate; Palagruža; Adriatic Sea
Hrčak ID:
84597
URI
Datum izdavanja:
15.12.1998.
Posjeta: 1.093 *