Evaluation of drought characteristics for Fars province using the Palmer Drought Severity Index

Drought is one of the great environmental disasters especially immense in arid and semi-arid. The drought indices as a tool for management practices and seeks to deal with the phenomenon of drought, are widely used in the world. One of these in dicators, is the Palmer Drought Severity Index (PDSI) that is used in many parts of the world to assess the drought situation and its continuation. In this paper, the drought state of Fars Province by using of this index over the period of 20 years (2014-1995) and according to meteorological data from six weather stations was assessed. The results showed that stations of Abade, Darab and Fasa in 2010 and 2001 for Eghlid and Lar and 1996 for Shiraz stations statistically were driest years in the period of 2014 to 1995. At this time changing in precipitation was also observed that in the years listed for droughts the steepest drop in rainfall was also remarkable. however in all stations in 2010 there were a sharp drop in rainfall that reflects the state of the drought this year.