Evaluation of spatiotemporal variability of temperature and precipitation over the Karakoram Highway region during the cold season by a Regional Climate Model

作     者：YANG Tao LI Qian CHEN Xi YIN Gang LI Lan-hai Philippe De MAEYER YANG Tao;LI Qian;CHEN Xi;YIN Gang;LI Lan-hai;Philippe De MAEYER

作者机构：State Key Laboratory of Desert and Oasis EcologyXinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Ili Station for Watershed Ecosystem ResearchChinese Academy of SciencesXinyuan 835800China University of Chinese Academy of SciencesBeijing 100049China Department of GeographyGhent UniversityGhent 9000Belgium Sino-Belgian Joint Laboratory of Geo-informationUrumqi 830011China Sino-Belgian Joint Laboratory of Geo-informationGhent 9000Belgium Research Centre for Ecology and Environment of Central AsiaChinese Academy of SciencesUrumqi 830011China College of Resources and Environmental SciencesXinjiang UniversityUrumqi 830046China 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2020年第17卷第9期

页      面：2108-2122页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：financially supported by the project of the National Natural Science Foundation of China(U1703241) the Strategic Priority Research Program of the Chinese Academy of Sciences the Pan-Third Pole Environment Study for a Green Silk Road(Pan-TPE)(XDA2004030202) the Chinese Academy of Sciences President’s International Fellowship Initiative(PIFI,Grant No.2017VCA0002) the China Scholarship Council(CSC,Grant No.201904910896) 

主　　题：Karakoram Highway WRF model Precipitation Temperature Snow hazards 

摘      要：Precipitation and temperature are two important factors associated to snow hazards which block the transport infrastructure and cause loss of life and properties in the cold *** in-situ observations are limited in the alpine with complex topographic characteristics,while coarse satellite rainfall estimates,reanalysis rain datasets,and gridded in-situ rain gauge datasets obscure the understanding of the precipitation patterns in hazardprone *** the Karakoram Highway(KKH)region as a study area,a double nestedWeather Research and Forecasting(WRF)model with the high resolution of a 10-km horizontal grid was performed to investigate the spatial and temporal patterns of temperature and precipitation covering the Karakoram Highway region during the cold *** results of WRF were compared with the in-situ observations and Multi-Source WeightedEnsemble Precipitation(MSWEP)*** results demonstrated that the WRF model well reproduced the observed monthly temperature(R=0.96,mean bias=-3.92°C)and precipitation(R=0.57,mean bias=8.69 mm).The WRF model delineated the essential features of precipitation variability and extremes,although it overestimatedthe wet day frequency and underestimated the precipitation *** rain bands were exhibited in a northwest-to-southeast direction over the study *** wet day frequency was found in January,February,and March in the section between Hunza and *** addition,the areas with extreme values are mainly located in the Dasu-Islamabad section in February,March,and *** WRF model has the potential to compensate for the spatial and temporal gaps of the observational networks and to provide more accurate predictions on the meteorological variables for avoiding common coldweather hazards in the ungauged and high altitude areas at a regional scale.