|
|||||
|
|
| 边界层局地相似理论在草原下垫面的适用性检验 | |
| 引用本文： | 王丙兰,胡非,程雪玲,朱蓉.边界层局地相似理论在草原下垫面的适用性检验[J].高原气象,2012,31(1):28-37. |
| 作者姓名： | 王丙兰 胡非 程雪玲 朱蓉 |
| 作者单位： | 1. 中国科学院大气物理研究所大气边界层物理与大气化学国家重点实验室,北京100029／中国科学院研究生院,北京100039／中国气象局公共气象服务中心,北京100081 2. 中国科学院大气物理研究所大气边界层物理与大气化学国家重点实验室,北京,100029 3. 中国气象局公共气象服务中心,北京,100081 |
| 基金项目： | 全国风能资源详查和评价专项项目，国家自然科学基金项目 |
| 摘 要： | 利用锡林浩特草原平坦下垫面塔层湍流资料,对常值通量层的高度进行了估计,检验了局地相似理论在均匀草原下垫面的适用性,对Monin-Obukhov相似理论和局地相似理论在常值通量层以上的大气边界层的适用性进行了比较。结果表明:(1)对于锡林浩特草原来说,常值通量层厚度在50m左右;(2)通过分析无量纲风速和温度梯度、无量纲风速方差、无量纲标量(温度T、水汽q、CO2浓度C)方差与稳定度z/L之间的关系,验证了局地相似理论在均匀草原下垫面70m以下大气边界层的适用性;(3)感热通量尺度与浮力长度尺度之间存在线性关系;(4)从经典Monin-Obukhov长度、局地Monin-Obukhov尺度和浮力长度尺度的对比分析来看,局地尺度更适用于50m以上的大气边界层,而浮力长度尺度不适用于50m以上的大气边界层。 |
| 关 键 词： | Monin-Obukhov相似理论 局地相似理论 湍流统计特征 |
Suitability of Local Similarity of Boundary Layer in Homogeneous Grassland Underlying Surface |
|
| WANG Bing-lan,-,HU Fei,CHENG Xue-ling,ZHU Rong.Suitability of Local Similarity of Boundary Layer in Homogeneous Grassland Underlying Surface[J].Plateau Meteorology,2012,31(1):28-37. | |
| Authors: | WANG Bing-lan - HU Fei CHENG Xue-ling ZHU Rong |
| Institution: | 1.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics, Chinese Academy of Science,Beijing 100029,China; 2.Graduate University of Chinese Academy of Science,Beijing 100049,China; 3.Public Weather Service Center,China Meteorological Administration,Beijing 100081,China) |
| Abstract: | The applicability of local similarity of the boundary layer of in the underlying surface Homogeneous grass land is examined using the turbulence observation data at meteorological tower.The height of constant flux layer is estimated.The extension of suitability of Monin-Obukhov and local similarity theories in the boundary layer upper constant flux is also discussed.The results show that the height of constant flux layer is about 50 m.The heat flux length scale is proportional to the buoyancy length scale both in the stable and unstable boundary layers.In contrast,the local Monin-Obukhov length is more suitable in describing the stability dependence of the similarity functions upper 50 m boundary layer than the buoyancy length scale. |
| Keywords: | Monin-Obukhov similarity theory Local similarity theory Turbulence characteristic |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |