Winter estimation of surface roughness length over eastern Qinghai-Tibetan Plateau

查看全文 作　　者：LunYu [1]Shang;Yu [1,2]Zhang;ShiHua [1,2]Lyu;ShaoYing [1]Wang;YinHuan [1]Ao;SiQiong [1]Luo;ShiQiang [1]Chen

机构地区：[1]Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;[2]College of Atmospheric Science, Chengdu University of Information Technology, Chengdu, Sichuan 610225, China

出　　处：《Research in Cold and Arid Regions》索引2017年第9卷第2期,共7页

基　　金：supported by the National Natural Science Foundation of China (41275016, 41405016, 41205006, 41275014, 41375077, 91537104, and 91537106) 摘　　要：Based on the Monin-Obukhov similarity theory, a scheme was developed to calculate surface roughness length. Surface roughness length over the eastern Qinghai-Tibetan Plateau during the winter season was then estimated using the scheme and eddy covariance measurement data. Comparisons of estimated and measured wind speeds show that the scheme is feasible to calculate surface roughness length. The estimated roughness lengths at the measurement site during unfrozen,frozen and melted periods are 3.23×10-3, 2.27×10-3 and 1.92×10-3 m, respectively. Surface roughness length demonstrates a deceasing trend with time during the winter season. Thereby, setting the roughness length to be a constant value in numerical models could lead to certain degree of simulation errors. The variation of surface roughness length may be caused by the change in land surface characteristic. 关键词：Qinghai-Tibetan PLATEAU SURFACE ROUGHNESS length Monin-Obukhov SIMILARITY theory least square FITTING

相关文献

参考文献（33）
引证文献（0）
耦合文献（245）

参考文献(33)

耦合文献(245)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Winter estimation of surface roughness length over eastern Qinghai-Tibetan Plateau

参考文献(33)

耦合文献(245)

用户提示