Open AccessHydrologic assessment of the TMPA 3B42-V7 product in a typical alpine and gorge region: the Lancang River basin, China
Author(s) -
Zhaoli Wang,
Jiachao Chen,
Chengguang Lai,
Ruida Zhong,
Xiaohong Chen,
Haijun Yu
Publication year - 2018
Publication title -
hydrology research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 48
eISSN - 1996-9694
pISSN - 0029-1277
DOI - 10.2166/nh.2018.024
Subject(s) - precipitation , environmental science , streamflow , drainage basin , scale (ratio) , structural basin , rain gauge , infiltration (hvac) , climatology , hydrology (agriculture) , meteorology , geology , geography , geomorphology , cartography , geotechnical engineering
To evaluate the accuracy and applicability of the TMPA 3B42-V7 precipitation product for the Lancang River basin, we used different statistical indices to explore the performance of the product in comparison to gauge data. Then, we performed a hydrologic simulation using the Variable Infiltration Capacity (VIC) hydrological model with two scenarios (scenario I: streamflow simulation using gauge-calibrated parameters; scenario II: streamflow simulation using 3B42-V7-recalibrated parameters) to verify the applicability of the product. The results of the precipitation analysis show good accuracy of the V7 precipitation data. The accuracy increases with the increasing of both space and time scales, while time scale increases cause a stronger effect. The satellite can accurately measure most of the precipitation but tends to misidentify non-precipitation events as light precipitation events (
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