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SPATIAL INTERPOLATION OF HOURLY GAUGE AND RADAR PRECIPITATION DURING MAP SOP
Jože Rakovec
; Chair of Meteorology, FMF, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
Mojca Dolinar
; Environmental Agency of the Republic of Slovenia, Vojkova lb, SI-1000 Ljubljana, Slovenia
Miha Demšar
; Chair of Meteorology, FMF, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
Stefano Micheletti
; ARPA-OSMER of Friuli Venezia Giulia, Via Oberdan, 18/a I-33040 Visco (UD), Italy
Sažetak
During MAP SOP (fall 1999) a network of additional automatic rain gauges was installed in the mountains of western Slovenia. The meteorological radar in Fossalon (OSMER, FVG) was operational as well. Raingauges are considered to provide measurements with good point accuracy, but offer little information on the spatial variability of precipitation. On the other hand the radar measurements give very good image of spatial distribution of precipitation, but the absolute quantity of precipitation is unreliable due to several systematic errors, especially occultation in mountainous areas. Different geostatistical approaches are tested to improve spatial distribution of precipitation, using raingauge and radar measurements. The spatial distribution of precipitation shows that the location of precipitation maxima is well correlated to the topographic features of the area and that the operational automatic gauge network is not dense enough to detect the spatial variability of precipitation in a scale of individual watersheds. The use of additional MAP data proved to be of great use, for example for such event as the one of heavy rainfall and debris flow in Loška Koritnica Valley in 2000.
Ključne riječi
radar precipitation measurements; raingauge precipitation measurements; spatial interpolation; MAP data; heavy rainfall event
Hrčak ID:
64551
URI
Datum izdavanja:
15.12.2005.
Posjeta: 1.046 *