干旱气象 ›› 2012, Vol. 30 ›› Issue (2): 158-168.

• 论文 • 上一篇    下一篇

基于WRF 不同边界层方案的黄土高原丘陵冬季地面气象要素日变化模拟分析

张龙张镭王颖曹贤洁   

  1. 半干旱气候变化教育部重点实验室,兰州大学大气科学学院,甘肃兰州730000
  • 收稿日期:2012-01-04 修回日期:2012-03-19 出版日期:2012-06-30 发布日期:2012-06-30
  • 作者简介:张龙( 1981 - ) ,男,甘肃平凉人,硕士研究生,主要从事大气边界层和大气扩散研究. E - mail: Dragon. pl@126. com
  • 基金资助:

    :国家重大科学研究计划项目( 2012CB9550302) 和国家自然科学基金项目( 41075104) 共同资助

Simulation of Daily Variations About Surface Meteorological Factor in Loess Plateau Hilly Region in Winter Based on Different PBL Schemes of WRF

ZHANG Long,ZHANG Lei,WANG Ying,CAO Xianjie   

  1. Key Laboratory for Semi - Arid Climate Change of the Ministry of Education,College of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China
  • Received:2012-01-04 Revised:2012-03-19 Online:2012-06-30 Published:2012-06-30

摘要:

利用中尺度模式WRF 3 种边界层参数化方案( YSU、MYJ 和ACM2) ,模拟了2009 年12 月1 ~6 日兰州大学半干旱气候观测站( SACOL) 冬季地面感热、潜热、温度和风速的日变化,并与同期实测资料进行了对比分析。结果表明模式能较好地反映模拟期间风温的日变化,在高分辨率模拟时MYJ边界层方案对于低层风温的模拟结果明显优于YSU 和ACM2 方案。3 种方案均能模拟出地面感热和潜热日变化,其中MYJ 方案对感热模拟效果较好,ACM2 方案对潜热模拟较好,但因为单一的陆面过程等物理选项,3种方案对能量的模拟均存在一定的误差。

关键词: WRF, 边界层参数化, 山地地形, 温度, 感热, 潜热

Abstract:

The diurnal variations of surface temperature,wind speed,sensible heat and latent heat over the Semi - Arid Climate and Environment Observatory of Lanzhou University ( SACOL) from 1 to 6 December 2009 were simulated by using three different planetary boundary layer ( PBL) parameterization schemes ( YSU,MYJ,and ACM2) in WRF model,and then compared the simulation results with observations. The results show that the diurnal variations of surface temperature and wind were simulated quite well by the model, while the low layer surface temperature and wind were simulated better by MYJ scheme than that byYSU and ACM2 schemes under the high resolution condition. Three schemes could simulate the diurnal change of sensible heat and latent heat,and MYJ scheme simulate sensible heat better and ACM2 scheme simulate latent heat better,but simulation results of these three different PBL schemes had some difference compared with the observations.

Key words: WRF, PBL parameterization, mountain terrain, temperature, sensible heat, latent heat

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