This dataset contains the output from the single-column version of the Community Atmospheric Model (CAM) used to investigate the sensitivity of the summertime diurnal precipitation cycle over China to different convective trigger and closure treatments. Here focuses on three distinct regions with contrasting precipitation regimes: the Tibetan Plateau (TP, 31°–35°N, 90°–94°E, afternoon-peaking), Southeastern China (SECN, 24°–28°N, 112°–116°E, afternoon-peaking), and the Sichuan Basin (SCB, 28°–32°N, 103°–107°E, nocturnal-peaking). Simulations: Control (CTRL): *_b.nc Sensitivity (SENS): *_g.nc Methodology / Methods: Model: Single Column Model (SCM) version of the Community Atmospheric Model (CAM). Convection Schemes: ZM: Zhang & McFarlane (1995) with modifications (dCAPE trigger + elevated convection) in SENS. TDK: Tiedtke (1989) updated by Bechtold et al. (2014), with non-equilibrium closure applied in SENS. UNICON: Park et al. (2014) unified convection scheme, with cold-pool feedback and elevated convection enabled in SENS (Park et al., 2024). Simulation Period: 1 June – 31 August 2021 (daily reinitialization at 00 UTC, 36-hour integration; last 24 hours retained). Forcing: ERA5 reanalysis (Hersbach et al., 2020) Details of parameterization configurations: