Ms. Babita Jangir Profile

Babita Jangir

at Indian Institute of Technology Bhubaneswar

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Proceedings Article | 3 May 2016 Paper

Relation between tropical cyclone heat potential and cyclone intensity in the North Indian Ocean

B. Jangir, D. Swain, T. V. S. Udaya Bhaskar

Proceedings Volume 9882, 988228 (2016) https://doi.org/10.1117/12.2228033

KEYWORDS: Lead, Atmospheric propagation, Technetium, Data centers, Data modeling, Meteorology, Satellites, Statistical analysis, Atmospheric modeling, Remote sensing

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Ocean Heat Content (OHC) plays a significant role in modulating the intensity of Tropical Cyclones (TC) in terms of the oceanic energy available to TCs. TC Heat Potential (TCHP), an estimate of OHC, is thus known to be a useful indicator of TC genesis and intensification. In the present study, we analyze the role of TCHP in intensification of TCs in the North Indian Ocean (NIO) through statistical comparisons between TCHP and Cyclone Intensities (CI). A total of 27 TCs (20 in the Bay of Bengal, and 7 in the Arabian Sea) during the period 2005–2012 have been analyzed using TCHP data from Global Ocean Data Assimilation System (GODAS) model of Indian National Center for Ocean Information Services and cyclone best track data from India Meteorological Department. Out of the 27 cyclones analyzed, 58% (86%) in the Bay (Arabian Sea) have negative correlation and 42% (14%) cyclones have positive correlation between CI and TCHP. On the whole, more than 60% cyclones in the NIO show negative correlations between CI and TCHP. The negative percentage further increases for TCHP leading CI by 24 and 48 hours. Similar trend is also seen with satellite derived TCHP data obtained from National Remote Sensing Center and TC best track data from Joint Typhoon Warming Centre. Hence, it is postulated that TCHP alone need not be the only significant oceanographic parameter, apart from sea surface temperature, responsible for intensification and propagation of TCs in the NIO.

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