Applied Research in Geographical Sciences

Applied Research in Geographical Sciences

Synoptic analysis of the most severe flood in Karkheh basin (Flood 1 April 2019)

Authors
dana rahimi
Javad khoshhal dastjerdi
Dariush rahimi
University of Esfahan
10.61186/jgs.24.74.16
Abstract
Among natural disasters, floods have the highest human toll. The economic impacts of floods are greater in developing countries, including Iran, and are particularly severe in the colder months of the year in the west of the country. The purpose of the present study is to analyze the most severe historical synoptic floods that occurred in Karkheh Basin (1 April, 2019). Descriptive - analytical research method and its environmental approach into circulation. Analysis of synoptic systems of large floods such as the April 12, 2019 floods show that Western Europe's high-pressure systems, Black sea, East of the Caspian and low pressure north of the Red Sea, Eastern Mediterranean in harmony with the high-rise systems of Western Europe, Low Mediterranean East with a temperature drop of about 50 degrees Celsius(The temperature at sea level In the eastern Mediterranean and Red Sea about 25 degrees Celsius and in the middle of the atmosphere -25 degrees Celsius) also the climb Humidity from the Arabian Sea, North Indian Ocean, Red Sea, Oman Sea and Persian Gulf and Along with Mid-width cold air loss On the area and the establishment of the Polar jet stream) Core up to 70 m(And the establishment of the front jet stream And positive rotation area On the area shows the structure of the synoptic systems causing the flood in the area.
Keywords
Synoptic Analysis
Flood
April 2019
Karkheh Basin
Collins, M. J., Kirk, J. P., Pettit, J., DeGaetano, A. T., McCown, M. S., Peterson, T. C., ... & Zhang, X. (2014). Annual floods in New England (USA) and Atlantic Canada: Synoptic climatology and generating mechanisms. Physical Geography, 35(3), 195-219.
Fragoso, M., Trigo, R. M., Pinto, J. G., Lopes, S., Lopes, A., Ulbrich, S., &Magro, C. (2012). The 20 February 2010 Madeira flash-floods: synoptic analysis and extreme rainfall assessment. Natural Hazards and Earth System Sciences, 12(3), 715-730.
Furl, C., Sharif, H., Zeitler, J. W., El Hassan, A., & Joseph, J. (2018). Hydrometeorology of the catastrophic Blanco river flood in South Texas, May 2015. Journal of Hydrology: Regional Studies, 15, 90-104.
Jiang, T., Kundzewicz, Z. W., & Su, B. (2008). Changes in monthly precipitation and flood hazard in the Yangtze River Basin, China. International Journal of Climatology: A Journal of the Royal Meteorological Society, 28(11), 1471-1481.
Kömüşcü, A. Ü., & Çelik, S. (2013). Analysis of the Marmara flood in Turkey, 7–10 September 2009: an assessment from hydrometeorological perspective. Natural hazards, 66(2), 781-808.
Li, Z., Yang, S., He, B., & Hu, C. (2016). Intensified springtime deep convection over the South China Sea and the Philippine Sea dries southern China. Scientific reports, 6(1), 1-9.
Lomazzi, M., Entekhabi, D., Pinto, J. G., Roth, G., & Rudari, R. (2014). Synoptic preconditions for extreme flooding during the summer Asian monsoon in the Mumbai area. Journal of Hydrometeorology, 15(1), 229-242.
Mastrangelo, D., Horvath, K., Riccio, A., & Miglietta, M. M. (2011). Mechanisms for convection development in a long-lasting heavy precipitation event over southeastern Italy. Atmospheric research, 100(4), 586-602.
Nadal - Romero, E., Cortesi, N., & González‐Hidalgo, J. C. (2014). Weather types, runoff and sediment yield in a Mediterranean mountain landscape. Earth Surface Processes and Landforms, 39(4), 427- 437.
Rahimi, D., Hasheminasab, S., & Abdollahi, K. (2019). Assessment of temperature and rainfall changes in the Karoun River basin. Theoretical and Applied Climatology, 137(3), 2829-2839.
Twardosz, R. (2010). An analysis of diurnal variations of heavy hourly precipitation in Kraków using a classification of circulation types over southern Poland. Physics and Chemistry of the Earth, Parts A/B/C, 35(9-12), 456-461.
Wang, S. Y. S., Zhao, L., & Gillies, R. R. (2016). Synoptic and quantitative attributions of the extreme precipitation leading to the August 2016 Louisiana flood. Geophysical Research Letters, 43(22), 11-805.