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复杂地形区陆面资料对WRF模式模拟性能的影响

何建军 余晔 刘娜 赵素平 陈晋北

何建军, 余晔, 刘娜, 赵素平, 陈晋北. 复杂地形区陆面资料对WRF模式模拟性能的影响[J]. 大气科学, 2014, 38(3): 484-498. doi: 10.3878/j.issn.1006-9895.2013.13186
引用本文: 何建军, 余晔, 刘娜, 赵素平, 陈晋北. 复杂地形区陆面资料对WRF模式模拟性能的影响[J]. 大气科学, 2014, 38(3): 484-498. doi: 10.3878/j.issn.1006-9895.2013.13186
HE Jianjun, YU Ye, LIU Na, ZHAO Suping, CHEN Jinbei. Impact of Land Surface Information on WRF’s Performance in Complex Terrain Area[J]. Chinese Journal of Atmospheric Sciences, 2014, 38(3): 484-498. doi: 10.3878/j.issn.1006-9895.2013.13186
Citation: HE Jianjun, YU Ye, LIU Na, ZHAO Suping, CHEN Jinbei. Impact of Land Surface Information on WRF’s Performance in Complex Terrain Area[J]. Chinese Journal of Atmospheric Sciences, 2014, 38(3): 484-498. doi: 10.3878/j.issn.1006-9895.2013.13186

复杂地形区陆面资料对WRF模式模拟性能的影响

doi: 10.3878/j.issn.1006-9895.2013.13186
基金项目: 国家重点基础研究发展计划2013CB956004,中国科学院百人计划项目290827631,国家自然科学基金 41175009,兰州市科技攻关计划项目2009KJLQ

Impact of Land Surface Information on WRF’s Performance in Complex Terrain Area

  • 摘要: 本文利用WRF(Weather Research and Forecasting)模式耦合Noah陆面过程模式,对比研究了使用不同精度陆面资料:WRF默认陆面资料、中国1 km分辨率数字高程模型数据集、2006年MODIS(MODerate-resolution Imaging Spectroradiometer)土地利用和植被覆盖度资料,WRF模式对兰州地区冬季气象场模拟结果的差异。结果表明,近地面气温对陆面资料的精度非常敏感,而风场对陆面资料的精度不敏感,WRF模式对气温的模拟效果好于对风场模拟。采用高精度且时效性好的陆面资料后,WRF模拟的近地面气温准确率提高了15.8%,模拟的夜间气温改进幅度较白天大。陆面资料可影响整个边界层温度场分布,准确的陆面资料对提高WRF模式模拟近地面乃至整个边界层气象场至关重要。尽管风速模拟误差较大,但总体上WRF模式能较准确地模拟出研究区的风场演变特征。使用新的陆面资料后WRF模拟的风速误差略有减小,风向误差略有增加。干旱半干旱区冬季数值模拟需要注意土壤湿度初值和模式初始积分时刻对模拟结果的影响。
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  • 收稿日期:  2013-06-02
  • 修回日期:  2013-09-10

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