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《Arid Land Geography》 2017-01
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Spatial downscaling of TRMM rainfall data based on GWR model for Qinling-Daba Mountains in Shaanxi Province

ZENG Zhao-zhao;WANG Xiao-feng;REN Liang;College of Tourism and Environment,Shaanxi Normal University;  
The precipitation in mountain area has important research value. However,the uneven distribution and the lack of the rain gauge stations in mountain area result in the difficulties in the study of precipitation which is related to the ecological,hydrological and meteorological processes. High-resolution satellite rainfall data provides a great opportunity to monitor precipitation frequently over large and remote areas. The Tropical Rainfall Measuring Mission(TRMM)is one of these products and can provide reliable precipitation data for regional hydrology study at the monthly and yearly scales. Unfortunately,in some small region,especially the mountain region with abundant rainfall and complex terrain,the TRMM rainfall product cannot be used directly because of its coarse resolution(0.25°). Therefore,it is very necessary to improve its resolution. In this paper,taking Shaanxi Qinling-Daba Mountains which were further divided into four different terrain zones as the study area,the relationship between TRMM and NDVI explored by geographically weighted regression(GWR)was used to construct the precipitation downscaling model,it could produce 1 km downscaled precipitation data in yearly time scale;then,selecting year 2010 as a typical case,the monthly downscaled precipitation was obtained from the annual downscaled precipitation data according to the proportion of the monthly precipitation over annual precipitation in TRMM;finally,the effects of topography on the reliability of the downscaled results were evaluated.In the study,the accuracies of the TRMM precipitation and GWR downscaled precipitation were evaluated by using a network of 23 rain gauges over Shaanxi Qinling-Daba Mountains,and the R,RMSE and BIAS were calculated to evaluate the data. The results show as follows:(1)the downscaled precipitation data improves the spatial resolution(from 0.25° to 1 km),which can provide more details about the precipitation;(2)the R of annual downscaled precipitation data is 0.88,and at monthly scale,the R is 0.93,the GWR downscaled precipitation has a good correlation with the data of rain gauges and the result is reliable;(3)the value of the downscaled precipitation is smaller than that of the TRMM data,and the downscaled result underestimates the precipitation in most cases;(4)the variation degree of the accuracy of the downscaled precipitation is the smallest in the Qinling Mountains where the altitude is the highest in the study area;(5)under similar topographical conditions,GWR downscaled results perform better at higher altitude. The GWR model can be used to the spatial downscaling of the TRMM rainfall product in Shaanxi Qinling-Daba Mountains,the downscaled results could provide higher spatial resolution precipitation for the study and application of regional hydrology.
【Fund】: 国家自然科学基金项目(41371497)
【CateGory Index】: P426.6
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【Citations】
Chinese Journal Full-text Database 10 Hits
1 WU Zheng-li;JIA Wen-xiong;ZHAO Zhen;ZHANG Yu-shun;LIU Ya-rong;CHEN Jing-hua;College of Geography and Environment Science,Northwest Normal University;;Spatial-temporal variations of vegetation and its correlation with climatic factors in Qilian Mountains from 2000 to 2012[J];干旱区地理;2015-06
2 LIU Xiaochan;ZHANG Hongyan;ZHAO Jianjun;GUO Xiaoyi;ZHANG Zhengxiang;PIAO Meihua;School of Geographical Science, Northeast Normal University;;Spatial Downscaling of TRMM Precipitation Data Based on GWR Model in Northeast China[J];地球信息科学学报;2015-09
3 SHEN Bin;LI Xin-gong;State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography,Chinese Academy of Science(CAS);University of Chinese Academy of Sciences;;Accuracy assessment of TRMM3B43 data in Tarim River Basin[J];干旱区地理;2015-04
4 HAN Ya;ZHU Wenbo;LI Shuangcheng;Key Laboratory for Environmental and Urban Sciences, Shenzhen Graduate School, Peking University;Key Laboratory for Earth Surface Processes (MOE), College of Urban and Environmental Science, Peking University;;Modelling Relationship between NDVI and Climatic Factors in China Using Geographically Weighted Regression[J];北京大学学报(自然科学版);2016-06
5 LIU Shao-hua;YAN Deng-hua;SHI Xiao-liang;YUAN Zhe;State Key Laboratory of Water Cycle Simulation and Regulation in River Basin, China Institute of Water Resources and Hydropower Research;Department of Water Resources, China Institute of Water Resources and Hydropower Research;College of Geomatics,Xi'an university of Science and Technology;;Inter-annual variability of vegetation NDVI,accumulated temperature and precipitation andtheir correlationsin China[J];干旱区地理;2014-03
6 LI Xiang-hu;ZHANG Qi;LI Yun-liang;State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University;;ANALYSIS ON FLOOD/DROUGHT IN POYANG LAKE BASIN BASED ON SATELLITE PRECIPITATION AND ITS RELIABILITY VALIDATION[J];长江流域资源与环境;2013-09
7 MA Jinhui;QU Chuang;ZHANG Haixiao;XIA Yanqiu;College of Earth and Environmental Science, Lanzhou University;;Spatial downscaling of TRMM precipitation data based on DEM in the upstream of Shiyang River Basin during 2001-2010[J];地理科学进展;2013-09
8 LU Yang 1,YANG Sheng-tian 1,CAI Ming-yong 1,ZHOU Qiu-wen 1,DONG Guo-tao 2(1.a.State Key Laboratory of Remote Sensing Science,b.School of Geography,Beijing Normal University,Beijing 100875,China;2.Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China);The Applicability Analysis of TRMM Precipitation Data in the Yarlung Zangbo River Basin[J];自然资源学报;2013-08
9 JI Xuan 1,3,LUO Yi 1,2(1 State Key Laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography,CAS,Urumqi 830011,Xinjiang,China;2 Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing,China;3 University of Chinese Academy of Science,Beijing 100049,China);Quality Assessment of the TRMM Precipitation Data in Mid Tianshan Mountains[J];干旱区地理;2013-02
10 YAO Yonghui, ZHANG Baiping (State Key Laboratory of Resource and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China);MODIS-based estimation of air temperature and heating-up effect of the Tibetan Plateau[J];地理学报;2013-01
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZHANG Xiya;HU Haibo;Institute of Urban Meteorology,China Meteorological Administration;;Spatio–Temporal Characteristics of Aerosol Optical Depth and Their Relationship with Urbanization over Beijing–Tianjin–Hebei Region[J];大气科学;2017-04
2 LIU Jiao;LIU Tie;HUANG Yue;BAO Anming;State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,CAS;University of Chinese Academy of Science;;Simulation and analysis of the hydrological processes in the Yarkant River Basin based on remote sensing data[J];地理科学进展;2017-06
3 ZHAO Zhuowen;ZHANG Lianpeng;LI Xing;WANG Yongxiang;WANG Shengli;School of Geography,Geomatics and Planning,Jiangsu Normal University;;Monitoring vegetation dynamics during the growing season in Ningxia based on MOD13Q1 data[J];地理科学进展;2017-06
4 PENG Jie;LI Ainong;LEI Guangbin;NAN Xi;BIAN Jinhu;ZHAO Wei;Research Center for Digital Mountain and Remote Sensing Application,Institute of Mountain Hazards and Environment,CAS;University of Chinese Academy of Sciences;;Estimation and Spatial Downscaling of Rainfall Erosivity Using TRMM Precipitation Data in Pakistan[J];水土保持学报;2017-03
5 LI Hui;YANG Tao;HE Qi-sheng;REN Wei-wei;State Key Laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences;University of Chinese Academy of Sciences;State Key Laboratory of Hydrology,Water Resources and Hydraulic Engineering,Hohai University;College of Earth Science and Engineering,Hohai University;;Composite Correction Method of TRMM Satellite Precipitation Data in the Tianshan Mountains,Xinjiang[J];干旱区研究;2017-03
6 Lu Xinyu;Wei Ming;Wang Xiuqin;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science & Technology;Institute of Desert Meteorology,China Meteorological Administration;Central-Asia Research Center of Atmosphere Science;Xinjiang Meteorological Bureau;;Correction of TRMM Monthly Precipitation Data from 1998 to 2013 in Xinjiang[J];应用气象学报;2017-03
7 Yang Jiao;Shi Lan;Miao Qilong;Zhang Di;Wan Yibo;Binjiang College,Nanjing University of Information Science & Technology;School of Remote Sensing,Nanjing University of Information Science & Technology;School of Applied Meteorology,Nanjing University of Information Science & Technology;;Precision evaluation of three sets of remote sensing precipitation data in Qinling-Daba Mountains[J];江苏师范大学学报(自然科学版);2017-02
8 Fangfang HUANG;Weiqiang MA;Binbin WANG;Zeyong HU;Yaoming MA;Genhou SUN;Zhipeng XIE;Yun LIN;Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences;Gansu Meteorological Information and Technology Support Center,Gansu Meteorological Bureau;Key Laboratory of Tibetan Environment Changes and Land Surface Processes,Institute of Tibetan Plateau Research,Chinese Academy of Sciences;Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences;;Air Temperature Estimation with MODIS Data over the Northern Tibetan Plateau[J];Advances in Atmospheric Sciences;2017-05
9 PENG Fei;Wahap Halik;LU Longhui;Abdulla Ablizi;The Key Lab for Oasis Ecosystem of MOE;College of Resource and Environment Science;College of Tourism Management,Xinjiang University;;Study on the spatial variation law of community residents' participation in tourism in the Grape Valley[J];陕西师范大学学报(自然科学版);2017-03
10 SUN Jianguo;WEI Fang;Faculty of Geomatics,Lanzhou Jiaotong University;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring;;The Health Assessment of the Urban Ecosystem and Analysis of Coordination for the City of Lanzhou[J];地球信息科学学报;2017-04
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 LV Yang;DONG Guotao;YANG Shengtian;ZHOU Qiuwen;CAI Mingyong;State Key Laboratory of Remote Sensing Science,Beijing Normal University;School of Geography,Beijing Normal University;Yellow River Institute of Hydraulic Research;;Spatio-Temporal Variation in NDVI in the Yarlung Zangbo River Basin and Its Relationship with Precipitation and Elevation[J];资源科学;2014-03
2 YI Lang;REN Zhiyuan;ZHANG Chong;LIU Wen;College of Tourism and Environmental Sciences,Shaanxi Normal University;;Vegetation Cover, Climate And Human Activities on the Loess Plateau[J];资源科学;2014-01
3 ZHOU Wei;GANG Chengcheng;LI Jianlong;ZHANG Chaobin;MU Shaojie;SUN Zhenguo;School of Life Science, Nanjing University;College of Animal Sciences, Nanjing Agricultural University;;Spatial-temporal dynamics of grassland coverage and its response to climate change in China during 1982-2010[J];地理学报;2014-01
4 Xiao Xiong;Yang Changhong;Tan Ke;Department of Epidemiology and Medical statistics,West China School of Public Health,Sichuan University;;A Study on the Application of Geographically Weighted Regression Model in Spatial Analysis of Infectious Disease[J];中国卫生统计;2013-06
5 MA Jinhui;QU Chuang;ZHANG Haixiao;XIA Yanqiu;College of Earth and Environmental Science, Lanzhou University;;Spatial downscaling of TRMM precipitation data based on DEM in the upstream of Shiyang River Basin during 2001-2010[J];地理科学进展;2013-09
6 YANG Yan-fen~(1,3),LUO Yi~(1,2) (1 Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;2 State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;3 University of Chinese Academy of Sciences,Beijing 100049,China);Evaluation on detective ability of TRMM remote sensing precipitation in arid region of northwest China[J];干旱区地理;2013-03
7 XU Hao-jie,YANG Tai-bao (Institute of Glaciology and Ecogeography,College of Earth and Environmental Science,Lanzhou University,Lanzhou 730000,Gansu,China);Spatial-temporal pattern variations of alpine grassland phenology in source region of the Yellow River from 2000 to 2012[J];干旱区地理;2013-03
8 YAN Jun-jie~(1,2),QIAO Mu~1,ZHOU Hong-fei~1,ZHOU Sheng-bin~1,LU Lei~(1,2),SONG Peng~(1,2) (1 Xinjiang Institute of Ecology and Geography,Chinese Academy of Science,Urumqi 830011,Xinjiang,China; 2 Graduate University,Chinese Academy of Sciences,Beijing 100049,China);Vegetation dynamics in Ili River valley of Xinjiang based on MODIS/NDVI[J];干旱区地理;2013-03
9 JI Xuan 1,3,LUO Yi 1,2(1 State Key Laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography,CAS,Urumqi 830011,Xinjiang,China;2 Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing,China;3 University of Chinese Academy of Science,Beijing 100049,China);Quality Assessment of the TRMM Precipitation Data in Mid Tianshan Mountains[J];干旱区地理;2013-02
10 YANG Yunchuan;CHENG Genwei;FAN Jihui;SUN Jian;LI Weipeng;Institute of Mountain Hazards and Environment CAS;Graduate Academy of China Academy of Sciences;Land and Resource College,China West Normal University;;Accuracy validation of TRMM 3B42 data in Sichuan basin and the surrounding areas[J];气象科学;2013-05
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