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題 名 | On the Climatological Aspects of Explosive Cyclones Over the Western North Pacific and East Asia Coastal Areas=東亞與西太平洋地區爆發性氣旋之氣候特徵研究 |
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作 者 | 陳泰然; 呂振福; | 書刊名 | Terrestrial, Atmospheric and Oceanic Sciences |
卷 期 | 8:4 1997.12[民86.12] |
頁 次 | 頁427-442 |
分類號 | 328.242 |
關鍵詞 | 東亞; 西太平洋地區; 爆發性氣旋; 氣候; Explosive cyclone; Sea surface temperature gradient; Sensible heat flux; Latent heat flux; Baroclinity; Baroclinic process; |
語 文 | 英文(English) |
英文摘要 | Twice daily synoptic charts at surface, 850, 700 and 500 hPa and mean sea surface temperature maps for the winter season as well as each month were used to study the climatological aspects of explosive cyclones over the western North Pacific and East Asia coastal areas in the September-April periods of 1974-1984. Geographical distribution of frequency, interannual and seasonal variations of frequency and frequency distribution of different intensities of explosive cyclones were analyzed. The relationships of cyclones to a 500 hPa trough, lower-tropospheric baroclinity and sea surface temperature gradients were studied at the formation and explosive stages. It was found that explosive cyclones tended to form and to deepen rapidly along the shoreward edge of the warm Kuroshio current over the area of the maximum SST gradient. They also frequently formed and deepened rapidly about 700-800 km ahead of the 500 hPa trough. Results suggest that the flux of sensible heat and latent heat from the warm ocean surface and latent heating over the cyclone area in addition to the baroclinic process may have had positive effects on the formation and rapid deepening of explosive cyclones over the western North Pacific. |
本系統中英文摘要資訊取自各篇刊載內容。