**Dekai Lu 1,2 and Bin Yong 1,2,\***


Received: 1 November 2019; Accepted: 29 December 2019; Published: 1 January 2020

**Abstract:** The near-real-time satellite-derived precipitation estimates are attractive for a wide range of applications like extreme precipitation monitoring and natural hazard warning. Recently, a gauge-adjusted near-real-time GSMaP precipitation estimate (GSMaP\_Gauge\_NRT) was produced to improve the quality of the original GSMaP\_NRT. In this study, efforts were taken to investigate and validate the performance of the GSMaP\_Gauge\_NRT using gauge observations over Mainland China. The analyses indicated that GSMaP\_NRT generally overestimated the gauge precipitation in China. After calibration, the GSMaP\_Gauge\_NRT effectively reduced this bias and was more consistent with gauge observations. Results also showed that the correction scheme of GSMaP\_Gauge\_NRT mainly acted on hit events and could hardly make up the miss events of the satellite precipitation estimates. Finally, we extended the evaluation to the global scale for a broader view of GSMaP\_Gauge\_NRT. The global comparisons exhibited that the GSMaP\_Gauge\_NRT was in good agreement with the GSMaP\_Gauge product. In conclusion, the GSMaP\_Gauge\_NRT had better performance than the GSMaP\_NRT and was a more reliable near-real-time satellite precipitation product.

**Keywords:** satellite precipitation; Mainland China; GSMaP\_NRT; GSMaP\_Gauge\_NRT
