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Seasonal Variability of Cyclone Heat Potential in the Bay of Bengal

Author

Listed:
  • Y. Sadhuram
  • B. Rao
  • D. Rao
  • P. Shastri
  • M. Subrahmanyam

Abstract

Monthly maps of cyclone heat potential (CHP) in the Bay of Bengalhave been prepared by using Levitus climatological data set. Seasonal variability ofCHP in the Bay of Bengal has been studied using the CTD data sets collected duringfive cruises during the period, 1993–1996. High value (>30 kcal/cm 2 ) of CHP coincided with anticyclonic gyre (ACG) and the low value of CHP (16 kcal/cm 2 ) coincided with thecyclonic gyre (CG). This emphasizes the importance of gyres in the distribution ofCHP, which play an important role in the intensification of cyclones/depressions.CHP is >14 kcal/cm 2 over Andaman Sea, southern and Central Bay of Bengal where the generation and movement of cyclones take place during post south west monsoon season (October–November). A depression formed on 07.11.95 at 11°N; 91°E and intensified into a cyclonic storm by 8th November evening and crossed Orissa Coast on 9th November 1995. A few days before its formation, the value of CHP at the origin of thiscyclone was about 20 kcal/cm 2 . To understand the exact role of CHP in theformation and intensification of cyclones/depressions over Bay of Bengal, more intense and systematic data sets are essential. Copyright Kluwer Academic Publishers 2004

Suggested Citation

  • Y. Sadhuram & B. Rao & D. Rao & P. Shastri & M. Subrahmanyam, 2004. "Seasonal Variability of Cyclone Heat Potential in the Bay of Bengal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 32(2), pages 191-209, June.
    • Handle: RePEc:spr:nathaz:v:32:y:2004:i:2:p:191-209
    DOI: 10.1023/B:NHAZ.0000031313.43492.a8
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    Citations

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    Cited by:

    1. Bishnu Kumar & Arun Chakraborty, 2011. "Movement of seasonal eddies and its relation with cyclonic heat potential and cyclogenesis points in the Bay of Bengal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 59(3), pages 1671-1689, December.
    2. Debashis Paul & Jagabandhu Panda & Ashish Routray, 2022. "Ocean and atmospheric characteristics associated with the cyclogenesis and rapid intensification of NIO super cyclonic storms during 1981–2020," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 114(1), pages 261-289, October.
    3. M. Subrahmanyam, 2015. "Impact of typhoon on the north-west Pacific sea surface temperature: a case study of Typhoon Kaemi (2006)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 78(1), pages 569-582, August.
    4. Naresh Vissa & A. Satyanarayana & B. Prasad Kumar, 2013. "Intensity of tropical cyclones during pre- and post-monsoon seasons in relation to accumulated tropical cyclone heat potential over Bay of Bengal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 68(2), pages 351-371, September.
    5. Kumar Ravi Prakash & Tanuja Nigam & Vimlesh Pant & Navin Chandra, 2021. "On the interaction of mesoscale eddies and a tropical cyclone in the Bay of Bengal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 106(3), pages 1981-2001, April.
    6. Y. Sadhuram & K. Maneesha & T. Ramana Murty, 2012. "Intensification of Aila (May 2009) due to a warm core eddy in the north Bay of Bengal," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 63(3), pages 1515-1525, September.

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