Ismail Tas, Y. Ersoy Yildirim, Cenk Aksit, K. Aytac Ozaydin, Zeki Gokalp
Full Text PDF | Geostatistical, Reference Evapotranspiration, Seyhan Basin.
Geographic Information Systems (GIS) are computer-based tools for mapping and analyzing features and events on earth. GIS technology integrates common database operations such as query and statistical analysis with the unique visualization and geographic analysis benefits offered by maps Evapotranspiration mapping with classical methods may take months and even years based on the size of the area to be mapped. However, recently developed methods decreased the time consumed for such mapping practices to minutes. Geostatistical methods are the most commonly used methods for mapping over large areas in a short time. In present study, Reference Evapotranspiration (ETo) values were calculated by ASCE Standardize Penman Monteith method using long-term climate data in the Seyhan basin. The calculated ETo values were mapped for April, May, June, July, August, September and yearly total by using geostatistical methods. It was used 7 stations in basin and 9 stations out of basins for calculation. In the production of geostatistical maps, cokriging was used as interpolation method and spherical model was used for model of semi-variogram. At the end of the study, it was determined that ETo maps could be produced with reliable this method and model.