تقييم عناصر الموازنة المائية كمؤشر للتغير المناخي في شمال الأردن للفترة من 1974-1993

Abstract EN

Objective: this research investigates the influences of climate change on water balance for the timeframe (1974-2013) in the north region of Jordan based on (TM) model.

Methods: in this regard, (TM) model was implemented for two periods namely (1974-1993) and (1994-2013) in order to find the relationship between the results of (TM) model for the above-mentioned periods and hence estimate the current water situation in north region.

This is due to the fact the (TM) model is considered as a real indicator of the changing of the values of water balance elements over times.

In the study area, water balance has been estimated using (TM) model for every climatic station in the region.

This was performed through using the justified Thornthwaite water balance.

The dataset was divided into two main periods namely (1974-1993) and (1994-2013) than the chances in water balance elements was determined and correlated with the results evaporation has changed by around (+ 4 %), the water deficit (+ 5 %), water surplus (-1 %) and water run off (-2%) for the period of (1994-2013) comparing with the period of (1974-1993) in Ras Muneef station.

Whereas Mafraq station has experienced changes in the potential evaporation and water deficit by around (+ 7 %) and (+10 %) respectively when comparing between the two periods, In Irbed station the percentage of changes between the two periods for water surplus and runoff were around (-15 %).

Conclusion: this has been proved by the precious studies which are related to the climate change.