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| 利用激光雷达结合数值模式估算兰州远郊榆中地区夏季边界层高度 | |
| 引用本文： | 赵世强,张镭,王治厅,王腾蛟,张磊,梁捷宁.利用激光雷达结合数值模式估算兰州远郊榆中地区夏季边界层高度[J].气候与环境研究,2012,17(5):523-531. |
| 作者姓名： | 赵世强 张镭 王治厅 王腾蛟 张磊 梁捷宁 |
| 作者单位： | 1. 兰州大学大气科学学院半干旱气候变化教育部重点实验室,兰州 730000;93808部队,榆中 730109 2. 兰州大学大气科学学院半干旱气候变化教育部重点实验室,兰州,730000 3. 兰州大学大气科学学院半干旱气候变化教育部重点实验室,兰州 730000;92543部队,济源 454650 |
| 基金项目： | 国家重点基础研究发展规划项目2010CB428604;国家自然科学基金项目41075104;中央高校基本科研业务费专项lzujbky-2009-k03 |
| 摘 要： | 用激光雷达资料,采用小波变化法反演兰州远郊榆中地区兰州大学半干旱气候与环境观测站(SACOL)的边界层高度,并利用WRF中尺度数值模式,选取两种不同边界层参数化方案(YSU、MYJ)模拟了该地区边界层及其高度.分析表明激光雷达反演边界层高度与WRF模拟边界层高度结果基本一致;WRF选用YSU方案能较好反映热对流边界层,而MYJ方案对于动力作用边界层模拟较好.日出后08:00(北京时间,下同)SACOL不稳定边界层开始发展,17:00达到最大高度.热对流边界层可以达到2 km;动力作用边界层可达到1.5 km,之后热对流边界层下降速度明显高于动力作用边界层. |
| 关 键 词： | 边界层高度 激光雷达 小波变换 WRF |
| 收稿时间： | 2010/12/24 0:00:00 |
| 修稿时间： | 2012/6/15 0:00:00 |
Boundary Layer Height Estimate in Summer over the Lanzhou Suburb in the Yuzhong Area Using Lidar Measurement and Numerical Model |
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| ZHAO Shiqiang,ZHANG Lei,WANG Zhiting,WANG Tengjiao,ZHANG Lei and LIANG Jiening.Boundary Layer Height Estimate in Summer over the Lanzhou Suburb in the Yuzhong Area Using Lidar Measurement and Numerical Model[J].Climatic and Environmental Research,2012,17(5):523-531. | |
| Authors: | ZHAO Shiqiang ZHANG Lei WANG Zhiting WANG Tengjiao ZHANG Lei and LIANG Jiening |
| Institution: | 1 Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 7300002 Unit 93808 of People’s Liberation Army, Yuzhong 7301093 Unit 92543 of People’s Liberation Army, Jiyuan 454650 |
| Abstract: | The atmospheric boundary layer over the Lanzhou suburb in the Yuzhong area was analyzed at the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL). Micro Pulse Lidar (MPL-4B) data was retrieved by the wavelet transform method and a simulation was performed using the Weather Research Forecast (WRF) model with its two boundary layer parameterizations schemes: YSU and MYJ. The results showed that the Lidar retrieval data and the simulated boundary layer height were in agreement. The WRF with YSU scheme reflected the convection boundary layer well; the WRF with MYJ scheme showed good results in simulating the dynamic boundary layer. The boundary layer over SACOL started to develop around 0800 LST and reached its maximum height at 1700 LST. The analysis showed that the thermic convection boundary layer can reach an altitude of more than 2 km, and the dynamic boundary layer can reach 1.5 km. The thermic convection boundary layer decreases faster than the dynamic boundary layer. |
| Keywords: | boundary layer height lidar measurement wavelet transform WRF |
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