Synoptic survey on death rate resultant of Tehran air pollution during heat wave in summer 2013(1392)

Air pollution is the results of industrial development increased continuously by overpopulation urbanization expanse and use more fossil fuels. One of the most important air pollution consequences is breathing disease, intensification of heart and pulmonary diseases and also increasing mortality in the cities. Tehran is one of the most polluted cities in the world, so that; it is polluted by a pollutant or some pollutant one day of each 3 days. On the other hand, topographic situations and locating in Alborz Mountains increase it. In both July and August 2013, when the temperature reached over 40c° most of the times in heat waves, the air go stable and the quality of the air decreased and unhealthy conditions overcame for several weeks in Tehran.Based on the reports of meteorology organization, Tehran had the hottest days in summer 1392 (2013) ( Tir(July) and Mordad(August)) in recent 60 years. Air stability caused decrease of air quality and unhealthy conditions development for three weeks. Recognition of air pollutions origins and their synoptic patterns is useful for forecasting unhealthy conditions and control them. paper, temperatures data were received from meteorology organization;, pressure, altitude and temperature maps in sea level, 700 and 500 HCT Pascal conditions were gotten from NCEP/NCAR and Skew-T was got from UniversityofWyoming to recognize the synoptic pattern of the conditions. The results of the study showed Gang Cyclone tongue in SLP map and Anticyclone Azore and also inversion in middle and upper atmosphere caused air stability and increase of the temperature and then trapped the polluters near the ground caused decrease of air quality in Tehran.