杰赫勒姆河流域跨境区域日气象数据质量控制与同质化（英文）

编号 zgly0001584603

文献类型 期刊论文

文献题名 杰赫勒姆河流域跨境区域日气象数据质量控制与同质化（英文）

作者 RashidMAHMOOD  贾绍凤 

作者单位 KeyLaboratoryofWaterCycleandRelatedLandSurfaceProcesses  InstituteofGeographicScienceandNaturalResourcesResearch  CAS 

母体文献 Journal of Geographical Sciences 

年卷期 2016年12期

年份 2016 

分类号 P413 

关键词 qualitycontrol  homogenization  dailymeteorologicaldata  JhelumRiverbasin  Pakistan 

文摘内容 Many studies such as climate variability, climate change, trend analysis, hydrological designs, agriculture decision-making etc. require long-term homogeneous datasets. Since homogeneous climate data is not available for climate analysis in Pakistan and India, the present study emphases on an extensive quality control and homogenization of daily maximum temperature, minimum temperature and precipitation data in the Jhelum River basin, Pakistan and India. A combination of different quality control methods and relative homogeneity tests were applied to achieve the objective of the study. To check the improvement after homogenization, correlation coefficients between the test and reference series calculated before and after the homogenization process were compared with each other. It was found that about 0.59%, 0.78% and 0.023% of the total data values are detected as outliers in maximum temperature, minimum temperature and precipitation data, respectively. About 32% of maximum temperature, 50% of minimum temperature and 7% of precipitation time series were inhomogeneous, in the Jhelum River basin. After the quality control and homogenization, 1% to 11% improvement was observed in the infected climate variables. This study concludes that precipitation daily time series are fairly homogeneous, except two stations(Naran and Gulmarg), and of a good quality. However, maximum and minimum temperature datasets require an extensive quality control and homogeneity check before using them into climate analysis in the Jhelum River basin.