Applied Research in Geographical Sciences

Applied Research in Geographical Sciences

Temporal-spatial analysis of hail for optimal location Anti-hail system in Ravansar city

Articles in Press
Authors
hamzeh alizadeh 1
mehry akbary 1
zahra hejazizadeh 1
mohamad ahmadi 2
1 kharazmi University
2 Kermanshah Meteorological Office
Abstract
Kermanshah province, especially Ravansar city is one of the important regions of the country in the agricultural and horticultural sector, most of the time the hail phenomenon causes significant damage to these sectors. One way to reduce this damage is to install an anti-hail system. To achieve this goal, 37 station hail data were clustered and three main clusters were obtained representing hail days; Each of the clusters has been plotted and analyzed in terms of geopotential height of 500 hPa, moisture level of 700, and map of 1000 to 500 hPa of temperature and omega. The results of the study of hail patterns show; A low-altitude system is essential in the Middle East; To direct hot and humid air from the southern offerings to the region; At the same time, it is necessary to have high instability and weak static stability in the atmosphere on the surface of the earth, as well as the presence of sufficient moisture that can provide showers. Hierarchical analysis (AHP) method was used for location in GIS environment and parameters such as (slope, slope direction, temperature, humidity ...) were evaluated. These criteria were classified as operating maps, each separately and were scored according to the degree of priority in establishing the device. The final map shows the location of the system: Parts of the northwest of the region (Mansour Aghaei and Ghori Qaleh) and northeast of the central part of Ravansar and parts of the southwest of the area due to the appropriate geographical conditions and appropriate to them, sufficient temperature and humidity and the direction of the southwest slope, and having Favorable conditions for severe instability followed by hail; Anti-hail system is very important for construction in these areas. In general, about 32.6 square kilometers have relatively favorable conditions and about 3 square kilometers have very favorable conditions for the construction of the system.
Keywords
Hail
Ravansar city
anti-hail system
Location
GIS
Chroma, K., Brazdil, K., Tolasz, R., (2006), " Temporal and Spatial Variability of Hailstorms in Moravia and Silesia (Czech Republic) in the 19 th-20 thcenturies", Geophysical Research Abstracts, 8: (4): 4367.
Dan-alboteanu`2011`Automated positioning system for the Romanian anti-hail rocket launch pad` faculty of Engineering in Electromechanics`Environment and lndustrial lnformatics Univesity of Craiova.
Katarzyna, suwala, theor Appl climatol (2013), Institue of physical Geography and environmental planning, Adam Mikciewicz university, Poznan, Poland .
Manzato, Agostino, (2012): "Hail in Northeast Italy: Climatojogy and Bivariate Analysis with the sounding-Derived Indices".J. Appl. Meteor. Climatol. 52, 449-467.
Mikus, Petar., Maga, T .P., Natasha, S.M., (2011)."Analysis of the Convective Activity and its Synoptic Background over Croatia", of Atmospheric Resaerch Review, 104-105: 139-159.
Osmar Pinto, Jr. 2015. Thunderstorm Climatology of Brazil: Enso and Tropical Atlantic. International journal of climatology, 35:871-978.DOI: 10.1002/joc.4022.
Pocakal .D,J,Stalec. (2007), "Statistical analysis of hail characteristics in the hail-Proteced western Part of Croatia using data form hail suppression station", 4th European Conference on severe Storms 10 – 14 september 2007 Trieste – ITALY . Pp. 1-12.
Yukshkin`Albert12007`Functioning and development of anti-hail systm`National Institute of Agricultural Economics.
Zhang, chunxi, Qinghong, zhang, yogng, wang, (2008), climatology of hail in china, 1961 - 2005, Journal of APP lie d me teoralogy and climatology, 795 – 804.
AvtandilG. Amiranashvili, VictorA. Chikhladze, UchaV. Dzodzuashvili, Nugzar Ya. Ghlonti, Ioseb P. Sauri ). Reconstruction of Anti-Hail System in Kakheti (Georgia) Journal of the Georgian Geophysical Society, Issue B. Physics of Atmosphere, Ocean and Space Plasma, v.18B, 2015, pp. 92-106
Gordana Vukeli´c 1 , Olga Cvetkovi´c 2 , Ivan Gržeti´c 3 , Miloš Simi´c 4 , Zoran Miodragovi´c 4 , Lazar Lazi´c 5 ID , Miroljub Zari´c 6 , Aleksandar Peši´c 6 and Predrag Vuli´c 7,* ID) Anti-Hail Protection—Assessment of Financial Effects on the Territory of Belgrade.( Journal of sustainability. Received: 19 February 2018; Accepted: 13 April 2018; Published: 18 April 2018
Applied Research in Geographical Sciences

Articles in Press, Accepted Manuscript
Available Online from 21 March 2007