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Article

Quantitative Characteristics of the Current Multi-Source Precipitation Products over Zhejiang Province, in Summer, 2019

1
Zhejiang Province Hydrology Management Center, Hangzhou 310009, China
2
College of Big Data and Information Engineering, Guizhou University, Guiyang 550025, China
3
Zhejiang Ecological and Environmental Monitoring Center, Hangzhou 310009, China
4
Institute of Remote Sensing and Geographical Information Systems, School of Earth and Space Sciences, Peking University, Beijing 100871, China
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Meixner
Water 2021, 13(3), 334; https://doi.org/10.3390/w13030334
Received: 12 December 2020 / Revised: 19 January 2021 / Accepted: 23 January 2021 / Published: 29 January 2021
Precipitation data with fine quality plays vital roles in hydrological-related applications. In this study, we choose the high-quality China Merged Precipitation Analysis data (CMPA) as the benchmark for evaluating four satellite-based precipitation products (PERSIANN-CCS, FY4A QPE, GSMap_Gauge, IMERG-Final) and one model-based precipitation product (ERA5-Land), respectively, at 0.1°, hourly scales over the Zhejiang province, China, in summer, from June to August 2019. The main conclusions were as follows—(1) all other products demonstrate similar patterns with CMPA (~325.60 mm/h, std ~0.07 mm/h), except FY4A QPE (~281.79 mm/h, std ~0.18 mm/h), while, overall, the PERSIANN-CCS underestimates the precipitation against CMPA with a mean value around 236.29 mm/h (std ~0.06 mm/h), and the ERA5-Land, GSMap_Guage, and IMERG-Final generally overestimate the precipitation with a mean value around 370.00 mm/h (std ~0.06 mm/h). (2) The GSMap_Gauge outperforms IMERG-Final against CMPA with CC ~0.50 and RMSE ~1.51 mm/h, and CC ~0.48 and RMSE ~1.64 mm/h, respectively. (3) The PERSIANN-CCS significantly underestimates the precipitation (CC ~0.26, bias ~−35.03%, RMSE ~1.81 mm/h, probability of detection, POD, ~0.33, false alarm ratio, FAR, ~0.47), potentially due to its weak abilities to capture precipitation events and estimate the precipitation. (4) Though ERA5-Land has the best ability to capture precipitation events (POD ~0.78), the largest misjudgments (FAR ~0.54) result in its great uncertainties with CC ~ 0.39, which performs worse than those of GSMap_Gauge and IMERG-Final. (5) The ranking of precipitation products, in terms of the general evaluation metrics, over Zhejiang province is GSMap_Gauge, IMERG-Final, ERA5-Land, PERSIANN-CCS, and FY4A QPE, which provides valuable recommendations for applying these products in various related application fields. View Full-Text
Keywords: precipitation; evaluation; satellite-based precipitation products; reanalysis precipitation product; CMPA; Zhejiang province precipitation; evaluation; satellite-based precipitation products; reanalysis precipitation product; CMPA; Zhejiang province
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MDPI and ACS Style

Qiu, C.; Ding, L.; Zhang, L.; Xu, J.; Ma, Z. Quantitative Characteristics of the Current Multi-Source Precipitation Products over Zhejiang Province, in Summer, 2019. Water 2021, 13, 334. https://doi.org/10.3390/w13030334

AMA Style

Qiu C, Ding L, Zhang L, Xu J, Ma Z. Quantitative Characteristics of the Current Multi-Source Precipitation Products over Zhejiang Province, in Summer, 2019. Water. 2021; 13(3):334. https://doi.org/10.3390/w13030334

Chicago/Turabian Style

Qiu, Chao, Leiding Ding, Lan Zhang, Jintao Xu, and Ziqiang Ma. 2021. "Quantitative Characteristics of the Current Multi-Source Precipitation Products over Zhejiang Province, in Summer, 2019" Water 13, no. 3: 334. https://doi.org/10.3390/w13030334

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