The Remarkable Test of Abrupt Climatic Warming and Spatiotemporal Distribution Features of Temperature and Precipitation Fields
气候变暖的显著性检验以及温度场和降水场的时空分布特征

Based on the analyses of global temperature and precipitation data for the last 100 years, this paper studied the two abrupt climatic warmings especially in the 1920s and in the 1980s in 20th century, and made abrupt changes test with Mann-Kendall Method. The results of the first eigenvector of Empirical Orthogonal Function (EOF1) of temperature and precipitation data indicate that the main features on spatial and temporal modes could be represented very well on decadal and interdecadal time scales. The first eigenvector of temperature data reflects the two abrupt climatic warmings very clearly. At the same time the precipitation fields also change abruptly in accordance. Contrasting the two abrupt warming events, we can find that in most aspects they are very different, so the physical mechanisms for the two events should be different also.