摘要
利用数值模式WRF-Chem对兰州大学半干旱气候与环境观测站(SACOL)所在地区2010年4月10～11日的沙尘天气过程进行了水平分辨率分别为10、3和1 km的模拟分析。在每个试验中分别采用了YSU和MYJ边界层方案。结果表明,3种分辨率的试验都较好地反映了沙尘天气过程中PM10随时间的变化特征,显示出WRF-Chem对沙尘天气过程具有良好的模拟能力,但是在复杂地形区域,模式分辨率的提高并不能相应提高模拟结果的精度。在该试验中,采用MYJ边界层方案对PM10的模拟效果优于YSU方案,反映出在热通量对整个过程不具有决定性影响的情况下,MYJ方案取得了更加接近实际的结果。
Based on the data from the Semi-Arid Climate Observatory and Laboratory（SACOL） during the period from 10 April 2010 to 11 April 2010,experimental simulation of dust aerosol was carried out using WRF-Chem with resolution 10 km,3 km and 1 km.Two boundary schemes（YSU and MYJ） were used respectively in each case.Tne results showed that： all cases with different resolution represented similar variation tendency with the observation,indicating the capability of WRF-Chem in the dust aerosol simulation.However,in the complicated terrain condition,the case with higher resolution did not necessarily get a better result.In this experiment,the case with MYJ resulted of a higher accuracy,indicating that the results of simulation using MYJ scheme has good agreement with the observation when the heat flux is not the decisive factor in the weather process.
出处
《安徽农业科学》
CAS
2012年第6期3462-3466,共5页
Journal of Anhui Agricultural Sciences
