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| DOI | 10.1002/2016JD025401 |
| Analysis of land surface parameters and turbulence characteristics over the Tibetan Plateau and surrounding region | |
| Wang, Yinjun; Xu, Xiangde; Liu, Huizhi; Li, Yueqing; Li, Yaohui; Hu, Zeyong; Gao, Xiaoqing; Ma, Yaoming; Sun, Jihua; Lenschow, Donald H.; Zhong, Shiyuan; Zhou, Mingyu; Bian, Xindi; Zhao, Ping | |
| 通讯作者 | Wang, YJ (通讯作者) |
| 发表日期 | 2016 |
| ISSN | 2169-897X |
| EISSN | 2169-8996 |
| 起始页码 | 9540 |
| 结束页码 | 9560 |
| 卷号 | 121期号:16 |
| 英文摘要 | Based on the results from 11 flux sites during the third Tibetan Plateau (TP) Experiment (TIPEX III), land surface parameters and the turbulence characteristics of the atmospheric surface layer over the TP and surrounding region are analyzed. Monin-Obukhov similarity theory has been used to calculate the aerodynamic roughness length z(0m) and the excess resistance to heat transfer kB(-1) = ln(z(0m)/z(0h)), and the factors that cause variations of z(0m) and kB(-1) are investigated. The main drivers for the diurnal variations of surface albedo (alpha) at different sites are solar elevation, solar radiation, and soil moisture. The eddy correlation method is utilized to inversely calculate bulk transfer coefficients for momentum (C-D) and heat (C-H) at different sites. The relationships between C-D and C-H and the wind speed at 10m follow a power law for unstable stratification. For stable stratification, both C-D and C-H increase with increasing wind speed when wind speed is less than 5 m/s. Diurnal variations of turbulent fluxes are compared at different sites, and the relationships between turbulent fluxes and other variables are analyzed. Wind speed variance normalized by the friction velocity (sigma(u)/u*, sigma(v)/u*, sigma(w)/u*) for neutral stratification (C-u1, C-v1, C-w1), and temperature and humidity variance normalized by a temperature and humidity scale (sigma(T)/T*, sigma(q)/q*) under free convection (z/L< -0.1) (C-T, C-q) are fitted with similarity relations. The differences in similarity constants (C-u1, C-v1, C-w1, C-T, C-q) at different sites are discussed. For stable stratification, cases are divided into weakly stable conditions and intermittent turbulence, and the critical values for these two states are determined. Shear and buoyancy terms in the turbulence kinetic energy equation for different stratifications are analyzed. |
| 关键词 | SENSIBLE HEAT-FLUXSEMIARID AREAWATER-VAPORTERRAINALBEDOTOWERLAYER |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000386207200016 |
| 来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258864 |
| 推荐引用方式 GB/T 7714 | Wang, Yinjun,Xu, Xiangde,Liu, Huizhi,et al. Analysis of land surface parameters and turbulence characteristics over the Tibetan Plateau and surrounding region[J]. 中国科学院青藏高原研究所,2016,121(16). |
| APA | Wang, Yinjun.,Xu, Xiangde.,Liu, Huizhi.,Li, Yueqing.,Li, Yaohui.,...&Zhao, Ping.(2016).Analysis of land surface parameters and turbulence characteristics over the Tibetan Plateau and surrounding region.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,121(16). |
| MLA | Wang, Yinjun,et al."Analysis of land surface parameters and turbulence characteristics over the Tibetan Plateau and surrounding region".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 121.16(2016). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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