Fig. 1. Geographic map showing the topography over Chinese mainland

Fig. 2. Spatial distributions of the climate regions as well as the meteorological stations over Chinese mainland

Fig. 3. Spatial distributions of continuous metrics （i.e.， CC（a~d）， BIAS（e~h）， RMSE（i~l） of four satellite precipitation products over Chinese mainland

Fig. 4. Spatial distributions of categorical statistical metrics （i.e.， POD（a~d）， FAR（e~h）， CSI（i~l） of four satellite precipitation products over Chinese mainland

Fig. 5. Boxplots of three metrics （i.e.， CC， BIAS and RMSE） for four SPPs over Chinese mainland at season scales

Fig. 6. Boxplots of three metrics i.e.， POD， FAR and CSI for four SPPs over Chinese mainland at season scales

Fig. 7. The variations of PDF values for SPPs with precipitation intensity over Chinese mainland

Fig. 8. The variations of BIAS values for SPPs with precipitation intensity over Chinese mainland

Fig. 9. The variations of categorical categoricalstatistical metrics for SPPs by elevation for seasons over Chinese mainland

Fig. 10. Spatial maps of error components of SPPs for four seasons over Chinese mainland