Evaluating Validation Methods for Satellite Precipitation Products Using Point Gauge Observations over Complex Topography

Ramadhan, Ravidho; Marzuki, Marzuki; Suryanto, Wiwit; Sholihun, Sholihun; Yusnaini, Helmi; Hashiguchi, Hiroyuki; Shimomai, Toyoshi

doi:10.1007/978-981-97-0740-9_49

Springer Proceedings in Physics

2024

DOI: 10.1007/978-981-97-0740-9_49

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Evaluating Validation Methods for Satellite Precipitation Products Using Point Gauge Observations over Complex Topography

Ravidho Ramadhan,

Marzuki Marzuki,

Wiwit Suryanto

et al.

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A comparative analysis of rainfall data from IMERG early run and ground-based rain gauges on Bali Island

Aryastana,

Yujana,

Candrayana

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Ground-based precipitation measurements encounter challenges in various parts of Bali due to the limited number of gauge stations. Therefore, it is essential to identify dependable alternatives like satellite-derived precipitation data, which offer continuous precipitation time series with high spatial resolution. This study assessed the effectiveness of near real-time global satellite precipitation products, specifically the Integrated Multi-satellite Retrievals for Global Precipitation Measurement-Early Run (IMERG-E) compared to gauge data from 43 stations across Bali Province. To evaluate IMERG-E datasets, traditional point-to-pixel comparison techniques were employed, alongside statistical metrics including correlation coefficient (CC), mean absolute error (MAE), relative bias (RB), and Nash-Sutcliffe efficiency (NSE). The comparative analysis showed that the daily IMERG-E dataset performs moderately well, as evidenced by weak to moderate correlation and low MAE. IMERG-E showed evidence of underestimating rainfall, as indicated by the RB value. Conversely, IMERG-E demonstrates poor accuracy according to the NSE value. It is necessary to explore effective correction methods for IMERGE-E to establish it as a viable alternative data source.

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A comparative analysis of rainfall data from IMERG early run and ground-based rain gauges on Bali Island

Aryastana,

Yujana,

Candrayana

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

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Evaluating Validation Methods for Satellite Precipitation Products Using Point Gauge Observations over Complex Topography

Cited by 1 publication

References 18 publications

A comparative analysis of rainfall data from IMERG early run and ground-based rain gauges on Bali Island

A comparative analysis of rainfall data from IMERG early run and ground-based rain gauges on Bali Island

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