Diurnal cycle of precipitation over the southeastern Tibetan Plateau and surrounding regions: Insights from <scp>intensity–frequency</scp> structure

Besides the respective importance of frequency, intensity and diurnal cycle precipitation, intensity–frequency structure could reveal more physical details about evolution process precipitation systems. Here, an objective method to quantitatively depict is proposed, applied complex terrains southeastern Tibetan Plateau (TP) its surroundings. Results show over high terrain has a unimodal night peak, while low with frequency-dominated peak intensity-dominated afternoon peak. Both weak intense are frequent at than those in regions compared bimodal regions. Further analysis reveals different within regions, respectively, which reflects spatiotemporal traits precipitation. Among elevated TP featured by synchronous decrease both from minimum. While total lower dominated but increase simultaneously. Regarding southern Hengduan Mountains prominent role leading amount, that Yungui Plateau. The proposed provides new perspective investigate characteristics terrains, be further used reasonably evaluate improve performance numerical models.