2024年2月17—23日中国大范围强寒潮雨雪冰冻强对流过程涉及的若干问题

Some Issues Concerning the Large Area Rainstorm,Snowstorm,Sleet,Freezing Rain and Severe Convection Event over China from 17 to 23 February 2024

2024年2月中下旬我国出现一次多灾种高影响天气过程。这是一次几十年一遇的过程,出现了大范围强寒潮雨雪冰冻天气并伴随强对流发生,涉及到强寒潮、沙尘、降雨、降雪、冻雨,以及强对流和伴随的大冰雹和雷暴大风,多种高影响天气在一次过程中都有所呈现,其过程之复杂异常罕见。本文针对此次过程中值得深入探讨的问题、高影响天气发生发展可能机理、相应的预报挑战等进行简要梳理,为后续对此次过程的细致和深入分析研究做一个引子。

During mid and late February of 2024,a strong cold surge,dust storm and various freezing weathers(snowstorm,sleet,freezing rain,rainstorm and severe convection producing large hail and damaging gust),associated with severe convection to the south,occurred in a large area over China.Multiple high-impact-weather events showed up during this extreme complicated process.In order to provide an introduction for the subsequent detailed and in-depth analysis and research of this process,in this article we discuss briefly the mechanisms and forecasting challenges of these high-impact-weather events,without exploration in details and in depth.