Geographia Technica, No. 2/2007, pp. 42 - 48

ABSTRACT - Developing proper algorithm for different studies can have a major impact on research time, by decreasing the necessary manual work. If the algorithm is general on regional scale or with minor changes can be adapted for different locations its importance is even higher. The calculation of the S.P.I. value, characterizing the meteorological drought and excess of humidity, needs several steps and handles large amount of data. Because its calculus has a standard algorithm it’s suitable to develop software to calculate it for every location of a raster layer. This study presents such a software module, capable to create raster layers with S.P.I. indices starting form locally measured precipitation, measure points’ geographic location and altitude and digital elevation model.

Keywords:  meteorological drought, humidity, calculation, softwar, precipitation

Magyari_ARCGIS_S.P.I.pdf