Influence of synoptic atmospheric patterns on heat island intensity of Rasht city and climate Element's change

One of the consequences of the rapid growth of the cities is the heat islands, where the air temperature of the cities rises sharply in relation to the surrounding areas. Anzali station synoptic statistics were used to detect and detect changes in the Rasht elemental elements over the period 1956 to 2017. The time intervals included mean temperature, mean and maximum temperature, precipitation, humidity, evaporation, sunshine and mean wind speed. the effect The heat island intensity of Rasht city was selected from the atmospheric synoptic models and its effect on climate elements, 6 days of 2010, and ground conditions were investigated with the Jumvord scale. Sunshine and evaporation have had the highest increasing trend at different months of the year as well as the annual trend. During the high-altitude system due to the stability and stability of the island, the intensity of the heat island increases, and this occurs during the low-altitude system and the instability of the air. After comparing climate elements Rasht During the reign of high altitude and low altitude systems in this city, it was found that the climate elements were strongly influenced by these patterns. So that the difference of more than 11.5 ° C in the maximum air temperature between August 5, 2010 and August 22, 2010 Also, the difference of about 29% of humidity on the same day indicates the intensity of Rasht heat island on August 5, 2010 This system is dominated by low altitude.