Rainfall pattern analysis in 24 East Asian megacities using a complex network

This study analyzed the spatial relationships of rainfall between major cities in East Asia using a complex network. The East Asia rainfall network comprises major cities (nodes) and mutual information (links). Once the network was created, vital-node identification and multiresolution community detection were conducted using adjacency information entropy and multiresolution community detection. Cross-mutual information defined relationships between cluster groups in East Asia.

The results revealed that the network reflected the rainfall characteristics of East Asia, and the relationships significantly affected vital nodes and clustering analysis. In addition, it was observed that Southeast Asia and Northwest China have a strong relationship. This work observed that, while the computational burden of implementing complex network analysis is not overly high, the method accurately reflects the relationship between regional rainfall and can be used to analyze the relationships between various weather factors.