The Spatiotemporal Analysis and Effectiveness Evaluation of Meteorological Warning Signals in Henan Province—A Case Study of the Continuous Heavy Rainfall in July 2024
[Purposes]By analyzing the spatiotemporal distribution characteristics and effects of meteoro-logical early warning signals during the continuous rainstorm in Henan Province in July 2024,the re-sponse ability of the early warning system is evaluated,which provides a scientific basis for the monitor-ing and response of meteorological disasters.[Methods]The research employs localized and typified sta-tistical methods to collect data on 2 722 meteorological disaster warning signals issued by 120 meteoro-logical stations from June 28 to July 31,2024.Time series analysis is conducted to compare historical ob-servation data,comprehensively analyzing the distribution characteristics,issuance frequency,and spe-cific features of different types of warning signals.[Findings]The results show that the warning signals are highly consistent with historical realities,and their spatial distribution accurately covers heavily af-fected areas such as Nanyang City.[Conclusions]This study validates the effectiveness of the meteoro-logical warning release system in Henan Province during this rainfall event,highlighting the differences in the quantity and timeliness of warning releases across different regions.It is suggested that future im-provements to the warning system should enhance its functionality and strengthen the multichannel dis-semination of warning information,thereby increasing the capacity and efficiency for responding to me-teorological disasters.
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