PARTITION OF SEASON BASED ON MULTIELEMENTS AND THE DECADAL CHANGE OF SEASON DURATION IN CHINA

作者：王正,支蓉,王瑜,封國林

摘要：Using the multielements similarity measurement method and 1950-2017 NCEP/NCAR gridded daily reanalysis datasets, we analyzed season duration in China during 1950-2016, and we defined the element with maximum absolute sensitivity as the key impact element at each point using the sensitivity analysis method. The decadal change of season duration and its key impact element before and after 1980 were studied. The results indicated obvious meridional and zonal differences in the distribution of season duration for the 67-year average, and that the key impact element has the same distribution characteristics as season duration. In addition, complementary relationships were found between the durations of spring and summer, autumn and winter, and the cold and warm seasons. Among them, the complementary relationship between the durations of spring and summer was strongest and the regions of complementarity were numerous. The complementary regions of autumn and winter durations were found mainly in western China. In the cold and warm seasons, the complementary regions were widespread and the complementary relationship was generally weak. Comparison of the periods before and after 1980 revealed an east-west difference in the interdecadal variation of season duration. Interdecadal variation in spring and summer was found concentrated in northern and western regions, while that in autumn and winter was concentrated in the western region. Areas of significant interdecadal variation of the key elements were found concentrated in northern and western regions,corresponding well to the areas of significant interdecadal variation of season duration.

發文機構：College of Atmospheric Sciences Laboratory for Climate Studies

關鍵詞：multielementsSIMILARITYmeasurementmethodSEASONDURATIONKEYimpactelementDECADALchange

分類號： P467[天文地球—大氣科學及氣象學]