Relationships between ENSO and Precipitation Changes in Eastern China
In this paper, the variations of precipitation, air temperature and ENSO in Eastern China during recent 56 years were analyzed using the method of Morlet wavelet transformation. The results showed that multi-time scale characteristics appeared in all the monthly anomaly series of precipitation, air temperature, sea surface temperature （ASST） and southern oscillation index （ASOI）,while each time-scale period＇s intensity was different. Meanwhile, cross wavelet transformation was also used to study the correlations of AR,AT with ASST, ASOI. It showed positive correlations between precipitation and ENSO at quasi-biennial 2-4 years periodic scale, while positive and negative correlations aherred regularly at inter-decade scale and annual scale above 8 years and positive correlations dominated showed multi-time scale characteristics. The correlations between temperature and ENSO showed multi-time scale characteristics.
国家科技期刊平台
NSTL
万方数据
维普
