Hrvatske vode, Vol. 29 No. 118, 2021.
Stručni rad
Analysis of the relations between air and sea surface temperatures and precipitation on Vis Island
Ognjen Bonacci
orcid.org/0000-0002-7123-3421
; Sveučilište u Splitu, Fakultet građevinarstva, arhitekture i geodezije, Split, Hrvatska
Duje Bonacci
orcid.org/0000-0002-8168-1367
; Sveučilište u Zagrebu, Fakultet hrvatskih studija, Zagreb, Hrvatska
Matko Patekar
; Hrvatski geološki institut, Zagreb, Hrvatska
Sažetak
The paper analyses the series of average daily, monthly and annual air temperatures and monthly and annual precipitation measured at three stations on Vis Island. The used data were observed at the main meteorological station Komiža (1956 - 2019), as well as automatic stations Hum (2012 – 2019) and Dračevo polje (2017 - 2019). Additionally, the analysis also included the series of average daily, monthly and annual sea surface temperatures measured at the station Komiža (1991 - 2019). Vis Island is a small carbonate island with a surface of 89.72 km2 and the highest peak of 587 asl, where the automatic meteorological station Hum is located. The air temperature regimes at all three stations on the small island far off the mainland are similar, with the average daily, monthly and annual air temperatures being the highest at the station Komiža - by about 1 ºC higher than the average annual air temperatures measured at Dračevo polje and by about 3.6 ºC higher than those measured at the station Hum. The upward trend in average monthly air temperatures in the period of 1964 - 2019 occurs in each individual month of the year. The gradient of average daily air temperatures’ decrease with altitude is significantly lower in the warm part of the year than in the cold one. The most intense increases in air temperatures occur in the warmest part of the year. The average annual values of sea surface temperatures in the period of 1991 – 2019 increased faster than the average annual air temperatures. The average monthly sea surface temperatures are higher than the average monthly air temperatures in the period from September to April, while lower in other months. The minimum daily air temperatures occur in the cold part of the year between 6 a.m. and 7 a.m. During the warm part of the year they occur slightly earlier - between 4 a.m. and 5 a.m. The maximum daily air temperatures generally occur around 1 p.m. Not one of the analysed series of annual and monthly precipitation in the observed period (1956 - 2019) showed the existence of a statistically significant upward or downward trend.
Ključne riječi
air temperature; sea surface temperature; precipitation; Mann-Kendall test; Gaussen - Walter diagram; Vis Island (Croatia)
Hrčak ID:
274290
URI
Datum izdavanja:
30.12.2021.
Posjeta: 1.032 *