Rainfall variability estimation for Western Rajasthan, India

The present research investigation was undertaken to work out the rainfall variability analysis of western districts of Rajasthan. The coefficient of variation and standard deviation for weekly, monthly and annual rainfall were computed for all the districts. The normal onset of monsoon over different western districts of Rajasthan is between June to October. It was found that the annual rainfall is higher at Sikar district followed by Jalor and Pali. The mean annual rainfall is lowest at Jaisalmer. When the CV for the annual rainfall was examined, it was found that the least CV was at Churu followed by Bikaner, Ganganager and highest in Barmer district.