Variation of monthly rainfall and monthly evaporation in Babylon

الملخص EN

In Babylon Governorate there exists a single meteorological observing station which is located at Hilla city.

An observation at this station is a point observation.

In order to determine variation of rainfall and of evaporation in Babylon Governorate records at nearby stations should be considered.

These stations are Baghdad, Kerbala'a, Najaf, Diwaniya, Kut, Hai, and Ramadi stations which are located outside the boundary of Babylon.

In this study the Thiessen polygons method is used to define zone of influence for each of these stations and, hence, monthly mean rainfall are computed.

It is found that the monthly mean rainfall are 15.159, 18.08, 22.719, and 15.339 mm / month for the winter months November, December, January, and February respectively.

The monthly mean evaporation are found to be 266.912, 288.057, and 259.936 mm / month for the summer months Jun, July, and August respectively.