1957-2004年影响我国的强热带气旋频数和强度变化
Based on tropical cyclone track dataset in the western North Pacific from China Meteorological Administration(CMA),variations in frequency and intensity of tropical cyclones(TCs)in the western North Pacific,affecting-China TCs(ACTCs)and landfall TCs(LTCs)achieving a typhoon intensity during 1957-2004 were studied.Frequencies of strong tropical cyclones showed significant decreasing trends from 1957 to 2004 and the linear trend was much greater when the intensity was stronger.There was no linear trend in the portion of strong tropical cyclones achieving a typhoon(TY)intensity,while those reaching a strong typhoon(STY)and a super typhoon(SuperTY)intensity showed decreasing trends during 1957-2004.The maximum intensities of TCs,ACTCs and LTCs all decreased during the period of 1957-2004.The mean intensities of TCs and ACTCs displayed decreasing trends and the mean intensity of LTCs achieving a TY intensity also showed a decreasing trend.
作 者： 王小玲 任福民 Wang Xiaoling Ren Fumin 作者单位： National Climate Center,China Meteorological Administration,Beijing 100081,China 刊 名： 气候变化研究进展 ISTIC 英文刊名： ADVANCES IN CLIMATE CHANGE RESEARCH 年，卷(期)： 2008 4(z1) 分类号： P4 关键词： strong tropical cyclone affecting China tropical cyclone landfall tropical cyclone China