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Intensified Arabian Sea tropical storms

Author

Listed:
  • Bin Wang

    (University of Hawaii at Manoa
    Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology)

  • Shibin Xu

    (University of Hawaii at Manoa
    Physical Oceanography Laboratory, Ocean University of China)

  • Liguang Wu

    (Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology)

Abstract

Arising from A. T. Evan, J. P. Kossin, C. E. Chung & V. Ramanathan Nature 479, 94–97 (2011)10.1038/nature10552 Tropical cyclones over the Arabian Sea in the pre-monsoon season (May–June) have intensified since 1997 (ref. 1, Fig. 1a) owing to significant reductions in storm-ambient vertical wind shear (VWS) in the troposphere; these reductions have decreased on average by about 3 m s−1 from the pre-1997 epoch (1979–1997) to the recent epoch (1998–2010)1. The authors attribute the reduction of pre-monsoon VWS to the dimming effects of increased anthropogenic black carbon and sulphate emissions1. However, observations show no sign of a significant decreasing trend in VWS (Fig. 1b), in contrast to the simulated, aerosol-induced decreasing trend in ref. 1. We further show that the decrease of VWS in the recent epoch is caused by substantially advanced (by 15 days) tropical-cyclone occurrences, caused by the early onset of the Asian summer monsoon. There is a Reply to this Brief Communication Arising by Evan, A. T. et al. Nature 489, doi:10.1038/nature11471 (2012) .

Suggested Citation

  • Bin Wang & Shibin Xu & Liguang Wu, 2012. "Intensified Arabian Sea tropical storms," Nature, Nature, vol. 489(7416), pages 1-2, September.
    • Handle: RePEc:nat:nature:v:489:y:2012:i:7416:d:10.1038_nature11470
    DOI: 10.1038/nature11470
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    Cited by:

    1. S. Saranya Ganesh & S. Abhilash & A. K. Sahai & S. Joseph & R. Chattopadhyay & R. Mandal & A. Dey & R. Phani, 2019. "Genesis and track prediction of pre-monsoon cyclonic storms over North Indian Ocean in a multi-model ensemble framework," 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. 95(3), pages 823-843, February.

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