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Quantifying interagency differences in intensity estimations of Super Typhoon Lekima (2019)

Frontiers of Earth Science 2022年第1期16卷 5-16页

作者： Lina BAI Jie TANG Rong GUO Shuai ZHANG Kaiye LIU Shanghai Typhoon Institute of China meteorological Administration Shanghai 200030China shanwei meteorological observatory Shanwei 516600China

There were significant discrepancies in the intensity estimations of Super Typhoon Lekima(2019)among the China meteorological Administration(CMA),the United States Joint Typhoon Warning Center(JTWC),and the Japan meteorological Agency(JMA)data sets,with a maximum difference of over 12 m/s and 16 m/s between the JTWC data set and the CMA and JMA data sets,*** the intensification phase,disagreement on the maximum sustained wind(MSW)between these agencies was due to the use of different conversion tables for the current intensity number(CI)estimated by Dvorak *** addition,CI discrepancies and different available observational data were also important contributors to the different intensities estimated during the Lekima’s decay phase before *** ability of various methods to minimize these discrepancies was evaluated in this *** the linear factor multiplication method and the remapping method using the same CI-MSW conversion table have substantially abilities to reduce intensity discrepancies,with the latter method being more ***,these improvements only hold for the intensification phase in the *** CMA data set had more complete and accurate intensity estimations when Lekima made landfall in *** its landfall,the intensity estimate of the CMA was comparable to that of the JMA,which differed greatly from that of the JTWC.

关键词： China. Typhoon tables

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