Fig. 15(a). Simultaneously-acquired reflectivity data from radars at three different frequencies: (a) 915 MHz, (b) 3 GHz, and (c) 33 GHz, for 30 March 1996. The wind profiling radar (a) and cloud radar (c) were on Discoverer while the precipitation radar (b) was on Manus Island. The Manus Island radar observed events slightly sooner because Discoverer was positioned 30 km downwind from the island.