Cite this paper:
WANG Xuan, CHEN Ge. Tracking typhoon-generated swell in the western North Pacific Ocean using satellite altimetry[J]. Journal of Oceanology and Limnology, 2015, 33(5): 1157-1163

Tracking typhoon-generated swell in the western North Pacific Ocean using satellite altimetry

WANG Xuan, CHEN Ge
Qingdao Collaborative Innovation Center of Marine Science and Technology, College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
Abstract:
This paper proposes a scheme for detecting the swell decay of a moving typhoon.We considered a typhoon that was neither far from a point source nor had a belt-like homogenous source, as previously studied.We tracked the swell close to the source during a typhoon in the western North Pacific Ocean.We used wind speed and significant wave height data derived from the Geophysical Data Record of the Jason-1 altimeter and the best-track information of the typhoon from the China Meteorological Administration tropical cyclone database.We selected three specific cases to reveal the decay characteristics of the swell generated by a moving typhoon.Based on an altimeter-based typhoon swell identification scheme and the dispersion relationship for deep water, we relocated the swell source for each altimeter measurement.The subsequent statistical decay coefficient was comparable to previous studies, and effectively depicted the swell propagation conditions induced by the typhoon.We hope that our results provide a new understanding of the characteristics and wave energy budget of the North Pacific Ocean, and significantly contribute to wave modeling in this region.
Key words:    swell decay rate|altimeter|typhoon|western North Pacific Ocean   
Received: 2014-05-09   Revised: 2014-07-07
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Articles by WANG Xuan
Articles by CHEN Ge
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