Impact of short term heavy rainfall on the monitoring and forecast of sudden visibility descent
By use of the AMW data of per-hour rainfall, per-minute rainfall and per-minute visibility from 26 AMW automatic weather stations along the Ninghu expressway, the heavy rain on the impact of visibility is analyzed. The results show that most of short term heavy rainfall occur in the rainstorm,along with the rainfall intensity enhancing, the visibility descends so suddenly as to endanger the traffic safety. According to the requirements of the department of the traffic management, the short term heavy rainfall is defined and the warning threshold value is found, establishing flow chart of the warning and nowcasting about short term heavy rainfall. The application proves that this flow can satisfy the requirements of the road weather service about short term heavy rainfall forecast.
Visibility Warning and nowcast Short term heavy rainfall
国家科技期刊平台
NSTL
万方数据
维普
