Cover of the Special Issue OPACC Part II (IMAGE) Chinese Academy of Sciences Headquarters Caption The cover of Part II of the Special Issue features '721' Giant Beijing Rainstorm in the Beijing area on 21 July 2012. Also shown on the cover is a photo of the mobile C-band dual-polarimetric radar of Nanjing University, which is capable of accurately measuring rainfall and microphysics. The curves show the accumulated rainfall predicted by some of the 4 km ensemble members at the station location where maximum accumulated rainfall was measured on that day. Credit AAS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.