Climatic Characteristic of Tropical Cyclone Activities over Western North Pacific Since 1949
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Abstract:
The track data of tropical cyclones (TC) provided by the Chinese Meteorological Administrator from 1949 to 2009 are employed to analyze the climatic characteristics of TC activities over the Northwest Pacific，including the temporalspatial variations of TC sources, the interannual and intermonthly variation of the TCs formed and landed on China, the distribution of TCs intensity and tracks, etc. The results show that the number of TCs formed on China has been decreased for more than 60 years, although there was little change in the number of landfall TCs, but the highintensity TCs increased in recent 10 years, with the peak period being from June to October, especially in August; the greater the intensity was, the later the TC occurred; the average life period of TCs increased with increasing TC intensity, with a singlepeak pattern; as for the geographical distribution of TC occurrence frequency, TCs were mainly concentrated around the South China Sea and the ocean area east of Philippines, decreasing radially outward; however, the TCs tended to stretch westward with the intensity slightly increasing in recent 10 years.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.