摘要
Morlet子波分析表明 ,河套地区 4～ 5月雨量明显存在 7a、2 4a和 3 a周期 ,其中以 7a周期为最强。用子波分析和周期图方法预测该地区 4～ 5月在 2 0 0 0～2 0 0 3年雨量将持续偏少 ,2 0 0 4或 2 0 0
Morlet wavelet transform of precipitation in Hetao area during April to May shows that there exist three obvious periods:7 ,24 and 3 year.The 7 year period is the strongest. Precipitation tendency of April May in this area is expected to be negative anomaly in 2000~2003,and obvious drought in 2000,and obviously positive anomaly in 2004(or 2005) by using Morlet wavelet analysis and Periodogram method.
出处
《南京气象学院学报》
CSCD
北大核心
2001年第4期576-580,共5页
Journal of Nanjing Institute of Meteorology
基金
国家重点科技项目"中国短期气候预测系统的研究"0 1- 0 1- 2子专题资助
