The Application of PERSIANN Family Datasets for Hydrological Modeling

This study investigates the application of precipitation estimation from remote sensing information using artificial neural networks (PERSIANN) for hydrological modeling over the Russian River catchment in California in the United States as a case study. We evaluate two new PERSIANN products including the PERSIANN-Cloud Classification System-Climate Data Record (CCS-CDR), a climatology dataset, and PERSIANN-Dynamic Infrared Rain Rate (PDIR), a near-real-time precipitation dataset. We also include older PERSIANN products, PERSIANN-Climate Data Record (CDR) and PERSIANN-Cloud Classification System (CCS) as the benchmarks. First, we evaluate these PERSIANN datasets against observations from the Climate Prediction Center (CPC) dataset as a reference. The results showed that CCS-CDR has the least bias among all PERSIANN family datasets. Comparing the two near-real-time datasets, PDIR performs significantly more accurately than CCS. In simulating streamflow using the nontransformed calibration process, EKGE values (Kling-Gupta efficiency) for CCS-CDR (CDR) during the calibration and validation periods were 0.42 (0.34) and 0.45 (0.24), respectively. In the second calibration process, PDIR was considerably better than CCS (E KGE for calibration and validation periods similar to 0.83, 0.82 for PDIR vs. 0.12 and 0.14 for CCS). The results demonstrate the capability of the two newly developed datasets (CCS-CDR and PDIR) of accurately estimating precipitation as well as hydrological simulations.

Automated summary

This study evaluates the application of PERSIANN datasets for precipitation estimation and hydrological modeling in the Russian River catchment. The results show that CCS-CDR is the most accurate dataset among all PERSIANN family datasets. PDIR performs significantly better than CCS in near-real-time precipitation estimation, and it also shows improved accuracy in hydrological simulations.