Anhui Agricultural Science Bulletin >
2025 , Vol. 31 >Issue 7: 108 - 112
DOI: https://doi.org/10.16377/j.cnki.issn1007-7731.2025.07.026
Process analysis of heavy rain in Dangshan County under the influence of typhoon “Bebinca”
Received date: 2024-10-09
Online published: 2025-04-14
To improve the typhoon rainstorm forecasting ability and reduce the economic loss caused by meteorological disasters in Dangshan County, Anhui Province, the precipitation data of ground automatic station, MICAPS aerial reality data, Doppler weather radar data and numerical forecasting data were used. The weather situation, atmospheric circulation background and weather situation, single-station sounding and physical field, radar echo evolution characteristics, numerical prediction test of the heavy rain process under the influence of typhoon “Bebinca” on September 17-18, 2024 were analyzed. The results showed that the main influencing factor of the typhoon rainstorm process was the typhoon trough, and the convergence was obvious; the typhoon moved slowly and maintained for a long time. The eastern water vapor transport channel was maintained and the water vapor conditions were good. Temperature characteristics, water vapor conditions, wind field characteristics and stability indexes were all conducive to the occurrence of the typhoon rainstorm. The size of the combined reflectivity factor in the radar echo had important indicative significance for the meteorological department to issue early warning information in time, and provided an important basis for disaster prevention and reduction. In each numerical forecast, the EC model had a higher accuracy for the track forecast and precipitation forecast of the typhoon “Bebinca”, and its forecast typhoon track, precipitation falling area and precipitation level were closer to the real situation. This paper provides a reference for providing more accurate typhoon forecast service in relevant areas.
Key words: typhoon “Bebinca”; heavy rain; the weather conditions; radar echo
ZHANG Xinran . Process analysis of heavy rain in Dangshan County under the influence of typhoon “Bebinca”[J]. Anhui Agricultural Science Bulletin, 2025 , 31(7) : 108 -112 . DOI: 10.16377/j.cnki.issn1007-7731.2025.07.026
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