Relationship between ENSO Events and Climate Change in Eastern Part of Qinghai Province

ENSO(El Nino-Southern Oscillation) events usually affect the local climate change.Through the correlation and spectral analysis using the monthly series of the precipitation,temperature,aridity data from the 5 stations in the east Qinghai and sea surface temperature anomaly(SSTA) and Southern Oscillation Index(SOI) from 1959 to 2005,a study was made on the relationship between local climate change and the ENSO events.The results show that the climate has a trend to be warmer and drier in east Qinghai during 1959~2005,which is more obvious in winter and spring;The impact of warm events on local precipitation,temperature and aridity changes become more significant,and the temperature is more sensitive to ENSO events than precipitation;ENSO events has two or three months influence on the climate change,EI Nino events have bigger effect on that very month,La Nina events has two or three months influence;Temperature anomalies,precipitation anomalies and ENSO events have the same shortterm trends,and the impact of SOI on local climate changes is obvious.