水利水电技术2017，Vol.48Issue(3)：1-6,6.DOI:10.13928/j.cnki.wrahe.2017.03.001
河谷局地气象场的WRF模式边界层方案敏感性分析
Sensitivity analysis on planetary boundary layer scheme in WRF model for local meteorological field of river valley
摘要
Abstract
In the study of the impact from local meteorological field of river valley on flood discharge atomization,as the simulating effects from various boundary layer schemes are indefinite,and then a sensitivity analysis on boundary layer scheme is necessary.WRF model is adopted to obtain the local meteorological field of the river valley topography,while RMM5 atmospheric surface layer scheme is selected and is used in concert with 8 boundary layer schemes for the relevant comparative analysis as well.The study result shows that as the wind speed is impacted by the river valley topography,its simulation effect is not so ideal and then can be improved by coupling the small scale numerical models.WRF can simulate the effect of narrow,the increase of wind speed and the gradual deflection of the wind direction to that of the river valley.Meanwhile,the simulation effects from the simulations on both the pressure and temperature are better.Summarizing the results from the simulation made on all the meteorological elements,the simulation accuracies of YSU and MYNN2 boundary layer scheme are higher.This method has a reference value for the study made on both the flood discharge atomization effect and the hydro-meteorological effect of reservoir environment.关键词
WRF模式/边界层/河谷地形/气象场/方案设计/敏感性分析Key words
WRF model/planetary boundary layer/valley topography/meteorological field/scheme design/sensitivity analysis分类
天文与地球科学引用本文复制引用
张华,何贵成..河谷局地气象场的WRF模式边界层方案敏感性分析[J].水利水电技术,2017,48(3):1-6,6.基金项目
国家自然科学基金项目(51579100) （51579100）
国家重点研发计划(2016YFC0401704) （2016YFC0401704）
