Relative timing of tropical storm lifetime maximum intensity and track recurvature
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An intriguing picture is emerging of coupled track and intensity links in tropical cyclones. Since recurvature represents a dramatic track shift, recurving tropical storms are isolated in this study and their time of maximum lifetime intensity is compared to their time of recurvature. Thirty-one percent of all western North Pacific tropical storms and 28% of all such storms in North Atlantic recurve. Seventeen years of track and intensity data for recurving tropical cyclones in these basins are examined here.
The overwhelming majority (≈80%) of western North Pacific tropical storms (including typhoons) reach their lifetime maximum intensity prior to recurvature. More than 45% of all recurving storms have coincident recurvature and lifetime maximum intensity, with weaker tropical storms clearly more likely to reach peak intensity at recurvature than strong systems.
Inspection of tropical storm intensity and track data for North Atlantic systems reveals few clear patterns. The most robust observation to be made here is that the majority of these systems reach their peak intensity prior to recurvature. Exclusion of landfalling extratropically transforming tropical cyclones from this sample greatly reduces the number of systems, making the significance of any results questionable.
KeywordsCyclone Tropical Cyclone Overwhelming Majority Relative Timing Track Data
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- Avila, L. A., Rappaport, E. N., 1996: Atlantic hurricane season of 1994.Mon. Wea. Rev.,124, 1558–1578.Google Scholar
- Carr, L. E., III, Elsberry, R. L., 1994. Systematic and integrated approach to tropical cyclone track forecasting. Part 1. Approach, overview and description of meteorological basis.Naval Postgraduate School Internal Report, NPS-MR-94-002, December 1994, 273 pp.Google Scholar
- Etro, J. F., Bassi, J. P., 1995: 1995 Annual Tropical Cyclone Report.Joint Typhoon Warning Center, Guam, Marianas Islands, 289 pp.Google Scholar
- Goerss, J. S., Velden, C. S., Hawkins, J. D., 1966: The impact of UV-CIMMS experimental high-density GOES-8 multispectral winds on NOGAPS forecasts of Atlantic tropical cyclones. Proceedings of the 11th Numerical Weather Prediction Conference, Norfolk VA, 19–23 August, 1996.Google Scholar
- Pasch, R. J., Mayfield, M., 1996: Eastern North Pacific hurricane season of 1994.Mon. Wea. Rev.,124, 1579–1590.Google Scholar
- Riehl, H., 1972: Intensity of recurved typhoons.J. Appl. Meteor.,11, 613–615.Google Scholar