عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Investigating the statistical and synoptical condition of a climate of an area requires statistics
that have accrued daily and really. Some of frequency occurrence of phenomena on should be
taken on to consideration. Maybe, in near past, the condition of upper atmosphere was not
considered and only the surface conditions wave analysed statistically. But today investigators
can study atmospherically phenomenon in global earth and systematically and identity the
climate pattern with applying various technics and specialized software and remote sensing.
Rains is considered to be the most Irregular climate element of sub arid areas. Specially, the
unique condition of its case and also heavy rain that usually leads to flood, should be studied
and regarded in environmental programming. Investigating the condition of raining, in
particular heavy rain in southern Khorasan, making use of statistical and synoptically patterns
along with surface map and 500 hp surface in cooperation is a feature of this research Hope,
in future, these kinds of practical research by researches in this field. Becomes of more notice.