Analysis of the dynamism and hazards of tropical cyclone Nilofar

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GHAVIDEL RAHIMI YOUSEF; ABBASI ESMAEIL; FARAJZADEH ASL MANUCHEHR

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Journal: ENVIRONMENTAL HAZARDS MANAGEMENT Year:2015 | Volume:2 | Issue:1 Page(s): 21-34

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Title

Analysis of the dynamism and hazards of tropical cyclone Nilofar

Author(s)

GHAVIDEL RAHIMI YOUSEF | ABBASI ESMAEIL | FARAJZADEH ASL MANUCHEHR | Issue Writer Certificate

Keywords

Arabian SeaQ2

climatic hazardsQ1

sea surface temperatureQ1

storm dynamicQ2

tropical cyclone NilofarQ2

Abstract

Tropical cyclone is a one of the major hazards that threat the southern coastal zones of Iran. Understanding such hazards and knowing when they will occur, could be useful in managing the accidents caused by them. The purpose of this study is analysis of the dynamism and hazards of recent tropical cyclone formed over the Arabian Sea, known as the Hurricane Nilofar. The data used include re-analyzed data of SLP (Sea Level Pressure), Geopotential Height, wind (U and V components), Omega, specific humidity, CAPE (Convective Available Potential Energy), Vorticity advection and SST (sea surface temperature) for Nilofar cyclone activity during the ending days of October 2014 were obtained and analyzed. The results showed that the depth of the trough level of 500 mb with the axis southwest-northeast, creates a cut of low on 25 and 26 October on the Arabian Sea that resulted in a divergence in the eastern side of the cut of low on level of 500 mb and created a strong convergence zone in the lower levels of the atmosphere and on the surface of the sea. Eastward movement of trough on third day of the formation of hurricanes and out of the activity storm, also, its change the mechanism of action following the availability of energy from the ocean surface (conversion of thermal energy into mechanical) to strengthen the updraft and downdraft currents on the wall of the eye and eye of storm has helped, as of this day and the next day the storm activity, increase speed to low level jetstream than the upper levels of atmosphere, causing the energy source the storm is chanced from upper levels to the lower levels of the atmosphere, also the interaction of tongues and anticyclonic centers located on the Arabian Sea, direction and movement of the storm has created to overturn it on 31 October.

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APA: Copy

GHAVIDEL RAHIMI, YOUSEF, ABBASI, ESMAEIL, & FARAJZADEH ASL, MANUCHEHR. (2015). Analysis of the dynamism and hazards of tropical cyclone Nilofar. ENVIRONMENTAL HAZARDS MANAGEMENT, 2(1 ), 21-34. SID. https://sid.ir/paper/265050/en

Vancouver: Copy

GHAVIDEL RAHIMI YOUSEF, ABBASI ESMAEIL, FARAJZADEH ASL MANUCHEHR. Analysis of the dynamism and hazards of tropical cyclone Nilofar. ENVIRONMENTAL HAZARDS MANAGEMENT[Internet]. 2015;2(1 ):21-34. Available from: https://sid.ir/paper/265050/en

IEEE: Copy

YOUSEF GHAVIDEL RAHIMI, ESMAEIL ABBASI, and MANUCHEHR FARAJZADEH ASL, “Analysis of the dynamism and hazards of tropical cyclone Nilofar,” ENVIRONMENTAL HAZARDS MANAGEMENT, vol. 2, no. 1 , pp. 21–34, 2015, [Online]. Available: https://sid.ir/paper/265050/en

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