Summer mesoscale convective systems in convection-permitting simulation using WRF over East China

Mesoscale convective systems (MCSs) are active in East China during the summer, causing significant precipitation and extreme weather. Increasing MCS frequency and intensity highlight the need for better simulation and forecasting. Traditional global and regional models with coarse resolution unable to explicitly resolve convection fail to represent MCSs and their precipitation accurately. This study conducted a 22-year (2000--2021) JJA simulation at a convection-permitting resolution (4km) using the WRF model (WRF-CPM) over East China. The data generated and the code used to analyze are uploaded here.中尺度对流系统（Mesoscale convective systems, MCSs）夏季在中国东部活动频繁，可引发显著降水与极端天气。近年来中尺度对流系统的发生频率与强度持续上升，凸显了对其开展更精准模拟与预报的迫切需求。传统全球与区域模式因分辨率较粗，无法显式解析对流过程，因此难以准确表征中尺度对流系统及其伴随的降水特征。本研究采用天气研究与预报模式（Weather Research and Forecasting Model, WRF）的对流容许版本（WRF-CPM），在中国东部区域开展了22年（2000年至2021年）夏季（JJA，即6-8月）、分辨率为4公里的模拟试验。本研究所生成的数据集及分析所用代码已在此处上传。