DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 7-8/1985 str. 72 <-- 72 --> PDF |
Influence of Weather Conditions on the Forest Fire Occurrence along the Adriatic Coast and Islands in Croatia during 1984 Summary Weather conditions characterized by very dry and hot periods along the Adriatic coast and islands in Croatia are highly dangerous for the forest fire appearance and its spreading. This paper presents the analysis of weather sequencies in 1984 caused by the large scale atmospheric circulation, and response of the local weather to the changes in macroscale atmospheric motions. Local weather elements known as potential forest fire triggering effects, are combined in a fire weather index, and numerical values of these indicies are given for a series of meteorological stations during the warm season April — September 1984 (Table 3). These values are compared to those in extremely dry year 1983, characterized by a great number of forest fires and tremendous damages in the Adriatic area (Table 5). It is shown that the estimated forest fire damages and reported losses of properties are highly correlated with the spatial and temporal variations of meteorological fire indicies resulting from both local and large scale yeather characteristics. In conclusion, the number of classified fire indicies, from very small to highly dangerous, for each month are compared to the fire combustions (Table 6). This clearly illustrates that particular weather conditions represent the primary potentials for forest fire occurrence, and thus the introduced indicies well exhibit a quantitative form of fire´s manifestation and its danger. |