Since the last MST Radar Workshop in Kyoto, in November 1988, there has been substantial progress made toward implementation of a Trans-Pacific network of wind profilers (Gage et al, 1989, 1990). As of June 1991, the network is virtually complete with the exception of the 50 MHz wind profiler that is under construction at Biak, Indonesia. The original network of 50 MHz wind-profiling Doppler radars is being funded by NSF and TOGA to support fundamental research on tropical convection, equatorial waves, and large-scale tropical circulation systems. The network as originally conceived was to be comprised of four VHF radars: Piura, Peru; Christmas Island, Kirabati; Pohnpei, Federated States of Micronesia; and Biak, Indonesia. The first three wind profilers are virtually completed and the Biak wind profiler will be installed as soon as site preparations are completed.

Since the Sixth MST Radar Workshop held at National Central University, Chung-Li, Taiwan, in August 1993, the NOAA/CU Network of VHF wind profilers has been operated in a routine mode. The network is comprised of VHF wind profilers located at Piura, Peru; Christrnas lsland, Kiribati; Pohnpei, Federated States of Micronesia; and Biak, Indonesia. The Biak wind profiler was completed in early 1992 and has been in continuous operation since March 1992. In addition to the VHF wind profilers named above a 50 MHz wind profiler is operated in Darwin, Australia through a cooperative research agreement between NOAA's Aeronomy Laboratory and the Australian Bureau of Meteorology's Research Centre. The VHF profiler network was described in more detail by Gage et al, (1990) and the VHF profilers are described in Gage et al. (1994a). In addition to the 50 MHz wind profilers, several sites have been ins...