Validation of CHIRPS Precipitation Estimates over Taiwan at Multiple Timescales

The Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS), which incorporates satellite imagery and in situ station information, is a new high-resolution long-term precipitation dataset available since 1981. This study aims to understand the performance of latest version CHIRPS depicting multiple timescale variation over Taiwan. analysis focused on examining whether better than another product—the Integrated Multi-satellitE Retrievals for Global Mission (GPM) final run (hereafter IMERG)—which known effectively capture We carried out evaluations made annual cycle, seasonal interannual variation, daily during 2001–2019. Our results show that IMERG slightly considering most features examined; however, performs representing (1) magnitude cycle monthly climatology, (2) spatial distribution mean all four seasons, (3) quantitative estimation area-averaged winter Taiwan, (4) occurrence frequency non-rainy grids winter. Notably, despite fact not many examined features, can depict temporal Taiwan annual, seasonal, timescales 95% significance. highlights potential use studying years 1981–2000, there are no database.