摘要
利用重庆市长年代气温及降水观测资料,用MHF(墨西哥帽函数)小波方法分析重庆市夏季气温及降水的时间—频率的多层次时间尺度变化特征。结果表明,重庆市夏季气温及降水变化具有明显的阶段性,且降水变化较气温更复杂;重庆市夏季平均气温变化以3年周期振动最强,而降水变化则以10年周期振动最强。
Using the air tempearture and precipitation of the past long years in Chongqing and MHF wavelet method, the temporal\|frequency multi\|time scale variations and jump features of summer temperature and precipitation were analysed. The results show that the variations of summer temperature and precipitation in Chongqing contain obvious staggered features. The variations of precipitation are more complex than that of temperature. Three\|year period\|oscillation of mean temperature variations is the strongest, and ten\|year period\|oscillation of precipitation variations is the strongest.
出处
《高原气象》
CSCD
北大核心
2003年第2期173-178,共6页
Plateau Meteorology
基金
重庆市科技攻关项目"重庆市气候异常基本规律及形成原因研究"资助
