Creation of Spatial and Temporal Based Maps of Climate Class and Reference Evapotranspiration Using AutoCAD Software – A Case Study of Eastern Anatolian Region of Türkiye
DOI:
https://doi.org/10.24925/turjaf.v12i7.1213-1224.6689Keywords:
AutoCAD, Penman Monteith, Climate class, Aridity index, Reference evapotranspirationAbstract
In this study, it is aimed to create spatial and temporal based maps of climate class and ETo for Eastern Anatolia Region of Türkiye. First of all, climate classes of 15 cities in the region were determined on a monthly basis according to the De Martonne aridity index method. Then, monthly average ETo values were calculated on a city basis with the CROPWAT software based on the FAO-56 Penman-Monteith method by using the long-term average values of the climate data measured by the existing meteorological stations in the region. AutoCAD software was used to create maps showing the spatial and temporal changes of the obtained climate class and ETo values. The ETo values determined from these maps were compared with the ETo values given for the regional cities in the guide “Plant Water Consumptions of Irrigated Crops in Turkey” prepared by the T.C. General Directorate of Agricultural Research and Policies (TAGEM). The mean absolute percentage error rate (MAPE) was considered as the comparison criterion. Using ETo maps, daily average ETo values were estimated with an accuracy rate of 89,85% (MAPE = 10,15%). It was concluded that these maps, where climate class and ETo can be easily determined depending on location and time, can be used for ETo-based plant water consumption (ETc) and irrigation scheduling studies, and the design and project of irrigation systems and water transmission structures, especially in rural areas where the current climate data required for ETo calculations cannot be measured or obtained.
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