Investigation of circulation patterns on early heat in Andimeshk

In this research,the early heat of Andimeshk synoptic station during the period 1390-1390 was investigated with a circular environmental approach.Then, by analyzing the existing data of the hot days station at 30 ° C and above in May,the 30-year period was identified and described as early warm days of Andimeshk spring;in this regard,data on the 500 and 700 hPa levels,as well as the map Temperature levels of 1000 hPa were used in geographic range 0 to 80 degrees east longitude and 0 to 80 degrees north latitude and related maps were plotted in Grads software environment.Relevant data were obtained from the National Center for Environmental Predictive Analysis and the National Center for Meteorological Research at a 6-hour observation with a 2.5 × 2.5 degree spatial resolution.It was selected in 2006 because of the warmest May during the period with 14 days of warm weather of 30 ° C and above.Concurrent analysis of the maps this year revealed one of the reasons for the heat build-up and expansion of the Azores at a height of 500 hPa,which governs the warm air over Andimeshk, as well as the subtropical high pressure,which is the site of air subsidence.The reason for endless heating and stability is associated with hot and dry air.Other factors are the presence of some high pressures on the Mandaran Sea in the north of the country,which prevents cool air from falling from higher latitudes and strengthens the persistence of low pressure on the ground and causes early warming of Andimeshk.