Warming trend in cold season of the Yangtze River Delta and its correlation with Siberian high

Based on the meteorological data from 1960 to 2010, we investigated the temperature variation in the Yangtze River Delta (YRD) by using Mann-Kendall nonparametric test and explored the correlation between the temperature in the cold season and the Siberian high intensity (SHI) by using correlation analysis method. The main results are that (a) the temperature in YRD increased remarkably during the study period, (b) the warming trend in the cold season made the higher contribution to annual warming, and (c) there was a significant negative correlation between the temperature in the cold season and the SHI.