Interdecadal Change in the Relationship between Northern and Southern Hemisphere Meridional Circulation over the Western Pacific Ocean,AMO modulation of interdecadal background of persistent heavy rainfall in summer over the Huaihe River Basin | Climate Dynamics,New Analytical Results and Comparison of 14 Numerical Schemes for the Diffusion Equation with Space-Dependent Diffusion Coefficient,CP - Variation of extreme drought and flood in North China revealed by document-based seasonal precipitation reconstruction for the past 300 years,New Analytical Results and Comparison of 14 Numerical Schemes for the Diffusion Equation with Space-Dependent Diffusion Coefficient