On the surface fluxes characteristics and roughness lengths at Zhongshan station,Antarctica  

作　　者：Changwei Liu Yubin Li Qinghua Yang Linlin Wang Xianqiao Wang Shimin Li Zhiqiu Gao 

机构地区：[1]Key Laboratory of Meteorological Disaster of Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,School of Geography and Remote Sensing,Nanjing University of Information Science and Technology,Nanjing,China [2]Key Laboratory of Research on Marine Hazards Forecasting,National Marine Environment Forecasting Center,Beijing,People’s Republic of China [3]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,People’s Republic of China

出　　处：《International Journal of Digital Earth》2019年第8期878-892,共15页国际数字地球学报（英文）

基　　金：the National Natural Science Foundation of China(Grant Nos.41376005 and 41505004);the National Key Projects of Ministry of Science and Technology of China(2016YFA0602100);the Chinese Polar Environmental Comprehensive Investigation and Assessment Program,and the Open Project Program(KLME1508);the Key Laboratory of Meteorological Disaster of Ministry of Education at Nanjing University of Information Science and Technology。

摘　　要：Over Antarctica,surface fluxes play an important role in the local atmospheric dynamical processes.To reveal the surface fluxes characteristics and aerodynamic and thermal roughness lengths over Zhongshan station,Antarctica,this paper analyzes the data observed at the station during 3 March 2008 through 15 February 2009.It is found that easterlies dominated this site throughout the whole year,with a maximum(average)speed of 25(5.6)m s−1 at 3.9 m height,and the annual maximum(minimum)surface temperature reached 291.05(230.05)K,while the annual maximum(minimum)air-specific humidity was 4.1(0.05)g/kg at 3.9 m height.The maximum(minimum)values of seasonal mean temperature,humidity,each radiation components,sensible and latent heat flux occurred in summer(winter),while for the seasonal averaged wind speed andτthe minimums(maximums)appeared in summer(autumn).After comparing with a partially linear regression method for aerodynamic roughness length and four previous equations that derive thermal roughness length from surface Reynolds number,constant values of aerodynamic roughness length as 3.6×10^(−3)m and thermal roughness length as 1.2×10^(−4)m at this site were validated by using the other three level observations and suggested for future studies.

关 键 词：ANTARCTICA Zhongshan station turbulent momentum flux sensible heat flux aerodynamic roughness length thermal roughness length 

分 类 号：P73[天文地球—海洋科学]