Seasonal Rainfall Forecasting Based on Synoptical Patterns Using Phasic Sets Theory by golamabas falah, sedmohamad mosavei, magid habibinokhandan, gavad khoshal

“…In the first step, relationships between synoptical patterns variation including Sea Level Pressure (SLP), Sea Surface Temperature (SST), Sea Surface Pressure Difference (DSLP), Sea Surface Temperature (DSSt), 1000 millibar Surface, Air Temperature at 850 hpa, Geopotential Height at 500 hpa and Relative Humidity at 300 hpa with average precipitation with average precipitation are investigated. …”
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Synoptic Survey of Floods Caused by Heavy Rainfall of 4 February 2006 in the Lorestan Basin

“…The results show that three factors exist floods damage; low surface pressure in this area, located west wind advection on ground low pressure and adaptation of left output shaft of  subtropical Jet-Stream on advection of westerly winds are the main cause of the flood in this basin. …”
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Synoptic Analysis of Systems with Heavy and That Cause Flooding Precipitation on the Kashkan Basin for during (1350-1384) by Mitra Amini, Hasan Lashkary, Mostafa Karampour, Zahra Hojaty

“…The results of study of weather maps, humidity, earth surface pressure difference and 850 hPa of 48 hours before and after storms, showed that with regard to the fact that three selected storms have out of heavy storms during statistics period occurred in various seasons of the year, their generating system was equal and Sudan-Mediterranean merger system pattern generated maximum precipitation. …”
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Investigation of the Relationship between Sudan Low-pressure System and the Heavy PrecipitationOccurredonApril 30, 1994in Kermanshah by Alireza movaghari, mahmood khosravi

“…This study aimed to identify the cause of intense rainfall occurred on April 30, 1994 in Kermanshah, The maps of surface pressure in the upper atmosphere Sudan and low pressure systems result in precipitation patterns were identified The role of this system as one of the major systems of the West was to climax. …”
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Synoptic and Dynamic Analysis of Widespread Hot Days in Iran by Hossein Asakereh, Seyed Abolfazl Masoudian, Hasan Shadman

“…The second is atmospheric data  including sea surface pressure( Hectopascal), zonal and meridian wind(M/S) and geopotential height(m). to study these data, an area  between 10 °  of West longitude  up to  120 ° of East longitude  and 0° up to 80 °  of north Latitude was considered. …”
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Circulation patterns of the temperature inversion in Tabriz city using PCA by HABIBEH NAGHIZADEH, ali mohammad KHorshiddoust, Rashid Saeidabadi, MohammadSaeid najafi

“…This was followed by the utilization of digital data on sea surface pressure as daily mean from the reanalyzed data series of NCEP/NCAR in the eastern longitudes of 10°-60° and the latitudes of 10°-90° in 651 pixels of 2.5/2.5 degrees. …”
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Synoptic-Dynamic Analysis of Heavy Rainfall Leading to Flooding in Golestan Province in March 2019 by Firooz Abdolalizadeh, Ali Mohammadkhorshiddoust

“…In the following, using the reanalyzed data of the NCEP/NCAR database (National Center for Environmental Prediction - National Center for Atmospheric Research of the United States), synoptic maps including maps of land surface pressure, geopotential height of the upper atmosphere, Omega (indicates the speed of vertical movements of the atmosphere), wind direction and speed, moisture flux convergence function, frontal function, specific humidity, atmospheric precipitable water and Hoff-Müller diagram were drawn to identify the synoptic and dynamic factors of the mentioned precipitations.Results and DiscussionThe results of the present research in the analysis of flood factors can be summarized as follows:Survey of the topography and slope of the Gorganrood basin revealed that the physical conditions of the basin are such that the potential for flooding is high.The amount of rainfall in 24, 6 and a half hour intervals in the study area were investigated and it was shown that the rainfall occurred on March 17, 18 and 19, especially on March 18, in terms of the intensity of rainfall were very intense.Investigation of the state of the middle troposphere showed that the formation of the Rossby wave and the meridional expansion of one of its troughs, along with the creation of a positive vorticity that dominated the studied area on the seventeenth of March, are the main factors in the creation of a baroclinic atmosphere and the dynamic ascent of air.Investigation of the synoptic-dynamic conditions of the lower levels of the troposphere showed that in the lower levels of the low-altitude synoptic system with closed meters, at the same time as the deep trough reigns over the region, it has been formed and strengthened during peak rainfall times and has led to a strong rise of air.Investigating the state of atmospheric humidity in the study area and identifying sources of moisture supply using special humidity maps, moisture flux convergence function and atmospheric flow paths were carried out.Investigating the omega variable in the vertical profile of the atmosphere using the Hoff-Mueller diagram showed that during the times of precipitation events, upward movements prevailed in all levels of the troposphere, especially during the peak of precipitation, the upward movements became more intense in the lower levels.Identifying the type of clouds using MODIS products showed that during heavy rains, especially on March 18, deep convective clouds with a high density of water were formed in the region, which extended up to a height of 300 hectopascals and were very thick.…”
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Identification Circulations Patterns of Dust Pollutant Days with Applying Clustering Analysis in Tabriz by Ali Ghasemi Beqtash, Ali Mohammad Khorshiddoust, Khalil Valizadeh Kamran

“…Polluted days with dangerous conditions on March 15-16, 2009 and to May 6 the same year. Then using the surface pressure data, the level of 500 hPa of pressure patterns on the infected far days were analyzed. …”
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Investigating the Structural Nature of Ashuba Tropical Storm/Hurricane on the Arabian Sea by mehdi asadi, Ali mohammad khorshiddoust, Hassan Haji Mohamadi

“…Analyzed digital data, including; Geopotential altitude (Hgt), orbital (u), meridional wind (v), sea surface pressure (SLP), air temperature and sea water temperature (SST) for standard levels at 17 compression levels with a resolution of average daily geographic degree belonged to the National Center for Environmental Prediction/Atmospheric Science and precipitated networked data were obtained from the European Center for Medium-Term Atmospheric Forecasting (ECMWF) with a resolution of 0.125 degrees Celsius for the Arabian Sea. …”
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