Analysis on the inter-decadal variability characteristics of climate in eastern Liaoning province from 1960 to 1990

Based on the monthly air temperature and precipitation data of thirteen observation stations from 1961 to 2000 in eastern Liaoning province,the inter-decadal variabilities of air temperature and precipitation were analyzed in detail.Evaporation was calculated with Gaoqiao formula in eastern Liaoning province,and the inter-decadal variability characteristics on evaporation and difference between precipitation and evaporation were analyzed.The responses of climatic drought to climate warming were also researched with aridity index.The results showed that climatic changes were taken on warm and dry trend during recent 40 years in eastern Liaoning,namely,air temperature was rising and precipitation was decreasing,especially in the 1990s.The climatic changes would expedite the degree of drought in eastern Liaoning province.