Spatial analysis of hail and its suppression methods (Case Study: East-Azerbaijan Province, Iran)

Abstract

Atmospheric hazards are considered as the mainenvironmental hazards, which threaten plants, animals and human communities. Hailing is one of these hazards which cause a lot of damages to differentactivities, especially agriculture, transportation, economy and so on in theworld. East Azerbaijan is one of the main areas of these activities in Iran. Inthis paper to study the time and place of occurring of hail in East Azerbaijanprovince, the data are collected from 10 synoptic stations in a span of 10year-time (2001-2010). For presenting the diagrams Excel software and forzoning GIS software were used. The results of this study show that the mostproportion of hailing is related to Marand St. with 10 times falling, and theleast one is related to Jolfa St. with only one time falling of hail. Thisissue is clearly observable in zoning map of the province. Time survey forhailing showed that the most rate of hail falling is occurring in April whichis 23 times and the least one is related to September which is only one time.In the circular diagram for seasonal falling it is considered that the mostrate of hailing is in the spring which is 49 times and the least one is in thesummer which is 8 times. In the rest of this study the principles andfundamentals of decreasing hail is discussed and methods of decreasing damagesand hail suppression is studied.