Graphical Abstract

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Takido, K., O. Saavedra, M. Ryo, K. Tanuma, T. Ushio, and T. Kubota, 2016: Spatiotemporal evaluation of the gauge adjusted Global Satellite Mapping of Precipitation at the basin scale. J. Meteor. Soc. Japan, 94, 185-195.
https://doi.org/10.2151/jmsj.2016-010   Graphical Abstract with highlights

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Highlights:

• GSMaP_Gauge (G_Gauge) and GSMaP_MVK (G_MVK) products were compared against ground Radar-AMeDAS in terms of spatiotemporal performance variabilities across the Tone River basin, Japan.
• The probability of detection commonly had negative log-linear relationships to the elevation and this trend was more significant in winter than summer, indicating the seasonal topographic effect on rainfall detection ability (Fig. 1).
• Both products underestimated precipitation intensity particularly in winter (Fig. 2, panels a and e), and G_Gauge overestimated the intensity notably in summer (Fig. 2, panels c and g).
• At any scale, local application of these products should consider seasonal changes and topographic effects. For further improvements of the GSMaP products at the basin scale, we suggest including high resolution gauge-based network data to enhance accuracy.