At 3:30 am on September 2, the 9th typhoon SAOLA in 2023 made landfall on the southern coastal areas of Zhuhai, Guangdong. On August 31, CMA Meteorological Observation Centre (CMA MOC) with CMA Center for Earth System Modeling and Prediction (CMEC) and Guangdong Provincial Meteorological Service applied RDSS to monitor SAOLA. This is the first time CMA carried out the round-trip drifting, which realized the interaction of typhoon observation and forecast, and effectively enhanced the accuracy of monitoring and forecasting of SAOLA since the upgrading from L-band radar sounding to Beidou Navigation Sounding System was activated in July this year.
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