In March 2016, the Japan Meteorological Agency (JMA) began operation of its new-generation Doppler weather radars with solid-state transmitters at Tokyo International Airport and Kansai International Airport.
The new radars have a dual polarization function that brings major benefits relating to early, precise detection of low-level wind shear (LLWS) and micro bursts (MBs), and are potentially applicable in the future replacement of general weather radars. The state-of-the-art solid-state transmitter supports high-accuracy observation, reliability and low lifecycle costs. JMA will share the experience and knowledge it gains through the operation of this cutting-edge technology with NMHSs to improve the quality of weather radar observation, which will be critical in promoting the WMO Integrated Global Observing System (WIGOS).
At each of nine major airports, JMA operates an aviation weather radar capable of three-dimensional wind field observation. This facilitates the detection of LLWS and MB phenomena, which are often hazardous to aircraft during takeoff and landing.