Brightness Temperature Characteristics of Short-Duration Heavy Rainfall in the Chengdu–Chongqing Railway Region in China

In this study, we analyzed the brightness temperature characteristics of short-duration heavy rainfall (SDHR) along Chengdu–Chongqing Railway (CCR), an important corridor economic and transportation activity in southwest China. Our findings could prove useful monitoring advance warning SDHR events: (1) predominantly occurred from July to August, with a peak frequency CCR area. terms diurnal variation, was mainly observed at night, particularly between 22:00–05:00 06:00–09:00 (local time), 01:00; (2) The relationship equivalent blackbody (TBB) further showed that occurrence accompanied by TBB decreasing its minimum value, after which it increased, ceased. cases where approached value 1 h but continued decrease slightly, continued. When occurred, majority values were recorded range 190–230 K; within range, 190 200 K most frequently recorded. general, lower are associated more intense SDHR. Based on finding, used linear regression establish estimating equation for