Climate water balance and its role in developing agricultural lands in the western plateau using geographical information systems

Abstract

          The climate water balance is of great importance in recent applied climate studies. Through these studies, it is possible to estimate the amount of water deficit or surplus through the relationship between precipitation and evaporation. If the monthly precipitation is higher than evaporation, then it is a water surplus. In case of the opposite, that is means the evaporation is higher than precipitation then it is water deficit.

The hydro-climate balance of the climatic stations covered in the study that calculated the total evaporation of Ivanov and the calculation of the possible evaporation of anthornoite through the values ​​of temperature, rain and relative humidity, to calculate the true evaporation, which ranged between (1240.66 - 2225.6) mm in the Rutba station and Karbala, respectively. This led to a rise in the amount of water deficit in most months and in all stations of the study area and the decrease in the amount of surplus in all stations. In some months, the highest amount in the Karbala station reached (101.1) mm, then the Ramadi station, which reached (27.6) mm, then the Rutba station, which reached (22.5) mm during the winter months. Despite its little, it is possible to harvest huge quantities of water by building dams on the many valleys for the development of agricultural lands owned by the study area, which has many other development possibilities.