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[1]DONG Guotao,FAN Dong,YANG Shengtian,et al.Analysis on the Applicability of GPM and TRMM Precipitation Data in the Yellow River Basin[J].Research of Soil and Water Conservation,2018,25(03):81-87.

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Analysis on the Applicability of GPM and TRMM Precipitation Data in the Yellow River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 03 Page number: 81-87 Column: Public date: 2018-04-10

Title:: Analysis on the Applicability of GPM and TRMM Precipitation Data in the Yellow River Basin

Author(s):: DONG Guotao¹, FAN Dong^1,2, YANG Shengtian³, XUE Huazhu², ZHOU Junli², DANG Suzhen¹, CHENG Chunxiao¹; 1. Key Laboratory of the Loess Plateau Soil Erosion and Erosion Water Loss Process and Control, Ministry of Water Resources, Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China;
2. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China;
3. State Key Laboratory of Remote Sensing Science, Beijing Key Laboratory for Remote Sensing of Environment and Digital Cities, Beijing Normal University, Beijing 100875, China

Keywords:: GPM; TRMM; precipitation; applicability analyses; Yellow River Basin

CLC:: P468.0⁺24

DOI:: -

Abstract:: Precipitation is a fundamental component of the global water cycle, a key parameter of ecology, hydrology and meteorology. Knowing when, where and how precipitation occurres is crucial for understanding how weather and climate impact both our environment and Earth water and energy cycles, including effects on agriculture, fresh water availability, and responses to natural disasters, and it is extraordinarily important for sustaining life on our planet during climate change. Accurate precipitation measurement of estimation is vital to water resource management, weather prediction, disaster monitoring, controlling, and so on. In addition, the availability of high-quality precipitation data is a prerequisite for conducting meaningful climatic, atmospheric and hydrological models. The Global Precipitation Measurement (GPM) Mission, lunched February 27th, 2014 by a joint effort of America National Aeronautics and Space Administration (NASA) and the Japan Aerospace Exploration Agency (JAXA), is an international satellite mission that provides the next-generation global observations of rain and snow. Based on the Tropical Rainfall Measuring Mission (TRMM), the GPM to unify precipitation measurements form constellation of research and operational sensors to provide a new generation precipitation products, GPM was designed to set a new standard for measurement of precipitation and snowfall, measure light rain, and provide quantitative estimates of microphysical properties of precipitation particles. A critical evaluation of these newly released precipitation data sets is very important for both the end users and data developers. In this study, the quality of the GPM and TRMM precipitation product from March 2014 to April 2015 were evaluated in Yellow River Basin with rain gauges from 76 meteorological stations. The main findings of this study are as follows. There was a significant correlation between GPM/TRMM products and the observed data. However, the satellite data might be a little bit overestimated by 2.46 percent and 2.19 percent, respectively. Compared with the observed data, the satellite products contained large absolute error in summer and relative error in winter, yet the computed accuracy is relatively high in spring and autumn. On the scale of months, the satellite precipitation data are greater than the measured values except the August and September, among them, the largest relative error appears in December, whereas the maximum absolute error appears in September. The single-site verification results show that the TRMM and GPM precipitation products have a poor accuracy around the site of Taole, Huinong and Linhe in the north of Yellow River Basin. However, the satellite data and the observation data have highly consistency in the south-central of Yellow River Basin and the precipitation data from satellite is applicable in this region. As the early validation and comparison of the GPM IMERG and TRMM 3B43 V7 monthly products, it will provide useful references and feedbacks for the development of IMERG algorithms and promote the research and application of GPM data over Yellow River Basin and beyond.

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