A Dipole Pattern of Summer Precipitation over Mid-high Latitude Asia and Related Snow Cover Anomalies in the Preceding Spring
HAN Jin-Ping, LIU Ge*, XIN Yu-Fei
Figure 2 a Normalized time series of the summer precipitation regionally averaged over MNC region solid line and that over the West Siberian Plain WSP region dash line for 1981-2011; b is the same as a, except it shows the time series after removing the variations with periods longer than 10 years by using Lanczos filtering.