| WRF模式对青藏高原那曲地区大气边界层模拟适用性研究 |
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| 引用本文： | 许鲁君,刘辉志,徐祥德,杜群,王雷.WRF模式对青藏高原那曲地区大气边界层模拟适用性研究[J].气象学报,2018,76(6):955-967. |
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| 作者姓名： | 许鲁君 刘辉志 徐祥德 杜群 王雷 |
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| 作者单位： | 1.中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室, 北京, 100029 |
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| 基金项目： | 第三次青藏高原大气科学试验——边界层与对流层观测（GYHY201406001）、国家自然科学基金重点支持项目（91537212）。 |
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| 摘 要： | 采用WRF（Weather Research and Forecasting）模式4种边界层参数化方案对青藏高原那曲地区边界层特征进行了数值模拟,并利用"第三次青藏高原大气科学试验"在青藏高原那曲地区5个站点的观测资料对模拟结果进行验证,分析不同参数化方案在那曲地区的适用性。研究表明,YSU、MYJ、ACM2和BouLac方案对2 m气温和地表温度的模拟偏低。BouLac方案模拟的地表温度偏差较小。通过对能量平衡各分量的对比分析发现,温度模拟偏低可能是向下长波辐射模拟偏低以及感热通量和潜热通量交换过强导致的。对于边界层风、位温和相对湿度垂直结构的模拟,局地方案的模拟效果均优于非局地方案。BouLac方案对那曲地区近地层温度、边界层内位温和相对湿度的垂直分布模拟效果较好。
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| 关 键 词： | 青藏高原 WRF模式 大气边界层 边界层参数化方案 |
| 收稿时间： | 2018/4/17 0:00:00 |
| 修稿时间： | 2018/9/29 0:00:00 |
Evaluation of the WRF model to simulate atmospheric boundary layer over Nagqu area in the Tibetan Plateau |
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| XU Lujun,LIU Huizhi,XU Xiangde,Du Qun and Wang Lei.Evaluation of the WRF model to simulate atmospheric boundary layer over Nagqu area in the Tibetan Plateau[J].Acta Meteorologica Sinica,2018,76(6):955-967. |
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| Authors: | XU Lujun LIU Huizhi XU Xiangde Du Qun and Wang Lei |
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| Institution: | 1.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China2.State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Science, Beijing 100081, China3.University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | The WRF (Weather Research and Forecasting) Model was employed to simulate the atmospheric boundary layer characteristics over Nagqu area in the Tibetan Plateau. By comparing simulations with results from the comprehensive campaign "The Third Tibetan Plateau Scientific Experiment", four boundary layer schemes were evaluated for their applicability over complicated underlying surface in Nagqu area.The results indicate that the YSU, MYJ, ACM2 and BouLac boundary layer parameterization schemes have cold biases in the simulation of 2 m air temperature and ground surface temperature. The BouLac scheme yields the minimum cold bias of surface temperature. By analyzing components of the energy balance, it was found that the cold bias of temperature mainly came from lower downward long wave radiation and unrealistically strong exchange of the sensible heat flux and latent heat flux. For the simulation of vertical structure of the atmospheric boundary layer, local schemes show better results of wind and relative humidity than that of nonlocal schemes. In Nagqu area, the BouLac scheme has a good effect on simulating surface temperature and vertical distribution of potential temperature and relative humidity in the boundary layer. |
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| Keywords: | Tibetan Plateau WRF model Atmospheric boundary layer Boundary layer parameterization scheme |
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