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Assessing Accuracy of IMERG in Precipitation Forecast of Sancha River Basin in Guizhou Province
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Li-ping ZENG1, Zhen-qing LIANG2, Sheng CHEN3a, 3b, Zhi LI4a, 4b, Hui-qin ZHU4a, 4b
Water Resources and Power | 2023, 41(1) : 10 - 13
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Water Resources and Power | 2023, 41(1): 10-13
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Assessing Accuracy of IMERG in Precipitation Forecast of Sancha River Basin in Guizhou Province
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Li-ping ZENG1, Zhen-qing LIANG2, Sheng CHEN3a, 3b, Zhi LI4a, 4b, Hui-qin ZHU4a, 4b
Affiliations
  • 1.Meteorological Service Center of Guizhou Province, Guiyang 550001, China
  • 2.Meteorological Technology and Equipment Center of Guangxi Zhuang Autonomous Region, Nanning 530022, China
  • 3a.Heihe Remote Sensing Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • 3b.Key Laboratory of Remote Sensing of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • 4a.School of Geographic Science and Planning, Nanning Normal University, Nanning 530001, China
  • 4b.Key Laboratory of Beibu Gulf Environmental Evolution and Resource Utilization, Ministry of Education, Nanning Normal University, Nanning 530001, China
Published: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20221310
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Rainfall observations derived from 76 ground rainfall gauges from January 1, 2018 to December 31, 2020 were used to evaluate the accuracy of IMERG Final Run (IMERG_FR) and IMERG Early Run (IMERG_ER) in IMERG (Integrated Multi-satellitE Retrievals for GPM) products over the small Sancha River basin in Guizhou Province. This study aimed to explore the precipitation detection capacity of IMERG_FR and IMERG_ER on different time scales. Metrics for assessment include correlation coefficient (CCC), relative bias (RRB), root-mean-squared error (RRMSE), probability of detection (PPOD), false alarm ratio (FFAR), critical success index (CCSI). The performance of IMERG was assessed at different time scale with different precipitation thresholds. The results show that the IMERG_FR and IMERG_ER have a certain precipitation detection ability in the small basin on the whole, and it still needs to improve the accuracy of IMERG products in estimating precipitation intensity.

GPM  /  IMERG  /  satellite precipitation observation  /  Sancha river basin in Guizhou
Li-ping ZENG, Zhen-qing LIANG, Sheng CHEN, Zhi LI, Hui-qin ZHU. Assessing Accuracy of IMERG in Precipitation Forecast of Sancha River Basin in Guizhou Province[J]. Water Resources and Power, 2023 , 41 (1) : 10 -13 . DOI: 10.20040/j.cnki.1000-7709.2023.20221310
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Year 2023 volume 41 Issue 1
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221310
  • Receive Date：2022-06-24
  • Online Date：2026-01-28
  • Published：2023-01-25
Article Data
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History
  • Received：2022-06-24
  • Revised：2022-08-03
Funding
Affiliations
    1.Meteorological Service Center of Guizhou Province, Guiyang 550001, China
    2.Meteorological Technology and Equipment Center of Guangxi Zhuang Autonomous Region, Nanning 530022, China
    3a.Heihe Remote Sensing Experimental Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    3b.Key Laboratory of Remote Sensing of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
    4a.School of Geographic Science and Planning, Nanning Normal University, Nanning 530001, China
    4b.Key Laboratory of Beibu Gulf Environmental Evolution and Resource Utilization, Ministry of Education, Nanning Normal University, Nanning 530001, China
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表12种不同金属材料的力学参数
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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