List of Articles Vorticity

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  1 - Assessing the heavy spring rains and the earth outgoing long wave radiation, Case Study: North West of precipitation 15 April 2016
  ali ghaffari محمد سلیقه محمدحسین ناصرزاده
  The purpose of this study is assessing the spring precipitation and outgoing long wave radiation using Reviews Climate maps at different levels of the atmosphere, surface and Earth mapping reflecting long-wavelength radiation. For these data synoptic stations of the Nor More

  The purpose of this study is assessing the spring precipitation and outgoing long wave radiation using Reviews Climate maps at different levels of the atmosphere, surface and Earth mapping reflecting long-wavelength radiation. For these data synoptic stations of the North West (15 April 2016) was obtained from the meteorological. The data from the induction by NCEP-resolution grid of horizontal 5 degrees of length and width of geographic and through the application Grads, maps of sea level, the 500 hpa daily, Vorticity 700 hpa, map convergence and divergence flow of moisture , long wavelength reflectance map of the earth's surface, atmosphere and map omega vertical advection map queries. Reviews maps indicate that the main cause of precipitation North West of Iran on 26 April, entry system, the rainfall from Eastern Europe and accompanying Western air mass with this system, and the effect of convection locally in the morning because of high levels of outgoing long wave earth is very minimal, but in the afternoon the existence of the local convection has intensified and the highest precipitation occurred in the study Manuscript profile
• Open Access Article
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  2 - Synoptic analyzing the occurrence of strong wind and dust storm in Shiraz in March 2019
  Ashraf Asadi
  As transition seasons approach at the end of the winter season, changes in movement patterns and wind speed in mid-latitudes are inevitable. On March 22, 2019, a strong wind accompanied by heavy dust and muddy rain for a large part of the day resulted in the injury of s More

  As transition seasons approach at the end of the winter season, changes in movement patterns and wind speed in mid-latitudes are inevitable. On March 22, 2019, a strong wind accompanied by heavy dust and muddy rain for a large part of the day resulted in the injury of several citizens and significant damage in the city of Shiraz. For this reason, this research was conducted with the aim of investigating the synoptic conditions of the formation of this phenomenon. Earth surface data from the Meteorological Organization and variables of air temperature, geopotential height, sea level pressure, zonal wind, meridional wind, specific humidity, and omega were used as upper atmosphere data to investigate the upper level of the atmosphere. Using these variables, geopotential height roughness map patterns, frontal formation process, vorticity advection, humidity, thickness pattern, earth surface pressure patterns, Jetstream, Omega, and Hof-Muller diagrams of the third type of Jetstream and Omega were drawn at different levels. The results showed that the location of the studied area under the positive advection zone in the east of the western wind channel, which leads to high divergence and low convergence, the establishment of temperature trend and front formation, and especially the descent of the polar front wind to the lower atmospheric levels, the conditions Synoptic have provided for the occurrence of strong air ascent and the formation of strong gusts caused by it. Manuscript profile