CAJ | 학술논문

利用长春气象站1951-2001年共51a的夏季降水量和年降水量序列资料,采用复Morlet小波方法分析了长春市夏季降水量和年降水量时间-频率的多时间尺度变化特征.结果表明,长春市夏季降水量和年降水量的年代和年代际时间尺度在时域中分布不均,具有明显的局部化特征;夏季降水量序列主要存在5a、15a左右的周期,年降水量序列主要存在5a、8a、16a、22a左右的周期.年降水量与夏季降水量在时间尺度和周期特征方面非常相似.
이용장춘기상참1951-2001년공51a적하계강수량화년강수량서렬자료,채용복Morlet소파방법분석료장춘시하계강수량화년강수량시간-빈솔적다시간척도변화특정.결과표명,장춘시하계강수량화년강수량적년대화년대제시간척도재시역중분포불균,구유명현적국부화특정;하계강수량서렬주요존재5a、15a좌우적주기,년강수량서렬주요존재5a、8a、16a、22a좌우적주기.년강수량여하계강수량재시간척도화주기특정방면비상상사.
By using summer precipitation and annual precipitation sequence data last 51 years (1951 -2001) from Changchun weather station, the temporal-frequency multi-time scale and jump features of summer and annual precipitation (1951 -2001) in Changchun were analyzed based on complex Morlet wavelet. The results showed that the time scales of the summer and annual precipitation time series were uneven in time domain, the local characteristics were obvious. Summer precipitation time series were 5 and 15 years periods. Annual precipitation time series were 5 years, 8 years, 16 years and 22 years periods. The annual precipitation and summer precipitation are very similar in terms of time scales and cycle characteristics.