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ISPRS Int. J. Geo-Inf. 2016, 5(10), 169; doi:10.3390/ijgi5100169

A GIS Study of the Influences of Warm Ocean Eddies on the Intensity Variations of Tropical Cyclones in the South China Sea

1,2
,
2
,
2,* and 1,3,*
1
School of Resource and Environmental Sciences, Wuhan University, 430079 Wuhan, China
2
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, 100101 Beijing, China
3
Key Laboratory for Geo-Environmental Monitoring of Coastal Zone of the National Administration of Surveying, Mapping and GeoInformation & Shenzhen Key Laboratory of Spatial Smart Sensing and Services & College of Life Sciences and Oceanography, Shenzhen University, 518060 Shenzhen, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Jason K. Levy and Wolfgang Kainz
Received: 23 June 2016 / Revised: 14 September 2016 / Accepted: 19 September 2016 / Published: 23 September 2016
View Full-Text   |   Download PDF [4668 KB, uploaded 23 September 2016]   |  

Abstract

This study presented the spatial distribution patterns of tropical cyclones (TCs) in the South China Sea (SCS) and discussed the possible influences of average sea surface temperature (SST) and the size of warm ocean eddies on changes in the intensity of TCs passing over them. Between 1993 and 2013, the SCS has experienced 233 TCs, of which 134 have interacted with warm ocean eddies. The results of fuzzy c-means (FCM) clustering showed that these TCs are mainly located in the northern portion of the SCS. After interacting with warm ocean eddies, TCs may intensify, remain at the same intensity, or weaken. For intensifying TCs, the enhancements range from 0 to 3 m/s only; however, this level of TC intensity enhancement is statistically significant at p<0.05. Further statistical analyses show that warm ocean eddies with a higher-than-average SST and a larger ratio between the size of the warm ocean eddies and the radius of the TC maximum wind may help intensify passing TCs. View Full-Text
Keywords: GIS; tropical cyclone; ocean eddy; South China Sea; fuzzy c-means clustering GIS; tropical cyclone; ocean eddy; South China Sea; fuzzy c-means clustering
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MDPI and ACS Style

Yang, F.; Peng, H.; Du, Y.; Wu, G. A GIS Study of the Influences of Warm Ocean Eddies on the Intensity Variations of Tropical Cyclones in the South China Sea. ISPRS Int. J. Geo-Inf. 2016, 5, 169.

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