Naslov
Homogeneity of average annual air temperature time series for Croatia

Autori
Pandžić, Krešo ; Likso, Tanja

Izvornik
International journal of climatology (0899-8418) 30 (2010), 8; 1215-1225

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
air temperature; homogeneity; Croatia
(air temperature homogeneity; Croatia)

Sažetak
Homogeneity of the mean annual air temperature values at 2 metres above ground for 22 stations in Croatia, in the period 1961-2000 is considered. The Standard Normal Homogeneity Test (SNHT) has been applied for this purpose, detecting both abrupt and gradual linear trend homogeneity breaks. For a group of, in data quality, lower-ranked weather stations, the results indicating inhomogeneity are sometimes difficult to explain. It has been shown that homogeneity breaks in multi-annual averages are not higher than 0.5°C, which could influence the natural trend analysis as well as some other statistical structures like climatological normals, correlation functions or smoothed time series. Because of this, homogenisation has usually to be adapted to the newest situation. On the other hand, the first Principal Component Amplitude, describing more than 90% of the considered air temperature field variance, indicates that the spatial average of the mean annual temperature for the whole territory of Croatia is not dependent on inhomogeneities present in a particular time series. This result is in accordance with those previously obtained for Sweden and Switzerland as well as with some similar results obtained for larger continental and global scales.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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