Contribution à l’analyse spatiale de la continentalité au début des saisons en Arabie saoudite par l’usage de SIG

الملخص EN

Climates within Saudi Arabia are distinct by including a continental component that varies from region to another.

the inspection of the continentality of the climate is considered one of the important jobs of applied, agricultural, and medical climatology.

The study of the continentality of climate necessitates searching for the best models that suit the distinctive climates of Saudi Arabia from the side of its temperatures and aridity.

We can obtain good results by using daily climatological data that normally used in the calculation of continentality of climate.

To understand the distribution of climatic continentality in Saudi Arabia and its critical boundaries, the data of the days marking spring autumn equinoxes, and winter summer solstices of the seasons of the year.

The research will go to analyze the capability of the models of displaying climatological picture of continentality distribution, especially when temperature rises in the beginning of summer which is characterized by noticeable rise in maximum and minimum temperatures.

According to those facts, it became necessary to inspect the way of the variation in continentality based on different models and amongst the working stations of Saudi Arabia; i.e.

inspecting the spatial patterns of continentality variability produced by the choosed models the recent research depends on the spatial analysis available in GIS, to obtain a suitable continentality form that can help comparing continentality indices with the actual weather elements from which they resulted, especially the mean annual maximum minimum temperatures, relative humidity and temperature range.

Also the search targets to statistically define areas according to the degree of their continentality, added the comparison of the variation resulted from the change of the used model.

That will be shown on maps which is known to be one of the most important characteristics of GIS programs in geographic research methodology.