CAJ | 학술논문

基于1960—2010年中国南方地区51 a降水资料,进行Z指数变换,再利用降水距平场作REOF分区,并分别对各区域代表站点Z指数序列作线性趋势分析和M-K分析及Morlet小波分析。结果表明：中国南方5个分区岳阳站、广州站、丽水站、信阳站和巢湖站5个典型站点的年际及年代际波动幅度都比较明显,但均呈由干变湿的趋势。且5个站点分别在1973、1993、1992、2002年和1979年发生突变,突变后UF一直呈上升趋势,总体均由干变湿5,个分区旱涝异常具有相对一致的性质。中国南方地区夏季降水具有多时间尺度振荡的特点,存在2—3 a和5—6 a的周期。
기우1960—2010년중국남방지구51 a강수자료,진행Z지수변환,재이용강수거평장작REOF분구,병분별대각구역대표참점Z지수서렬작선성추세분석화M-K분석급Morlet소파분석。결과표명：중국남방5개분구악양참、엄주참、려수참、신양참화소호참5개전형참점적년제급년대제파동폭도도비교명현,단균정유간변습적추세。차5개참점분별재1973、1993、1992、2002년화1979년발생돌변,돌변후UF일직정상승추세,총체균유간변습5,개분구한로이상구유상대일치적성질。중국남방지구하계강수구유다시간척도진탕적특점,존재2—3 a화5—6 a적주기。
Based on the summer precipitation data from 213 stations in the South China from 1960 to 2010,Z index was analyzed.Rotated empirical orthogonal function（REOF）division was discussed by precipitation anomaly field.Z indices at regionally representative stations were analyzed by methods of a linear trend analysis,a Mann-Kendall analysis and a Morlet wavelet analysis.The results show that summer precipitation area of the South China is mainly divided into five regions by a REOF analysis method.The annual and inter-decadal variations of summer precipitation are significant in five regionally representative stations,and their trends change from arid to wet.The abrupt changes at Yueyang station,Guangzhou station,Lishui station,Xinyang station and Chaohu station appear in 1973,1993,1992,2002 and 1979,respectively.UF values are rising after the abrupt change.The occurrence of drought and flood in five divisions are consistent.Summer precipitation cycles are 2-3 years and 5-6 years in the South China.