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| 1 | Validation of ECMWF and NCEP–NCAR Reanalysis Data in Antarctica显示文摘The European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis (ERA-40) and the National Centers for Environmental Prediction-National Center for Atmospheric Research (NCEP-NCAR) ECMWF (ERA-40) and NCEP-NCAR reanalysis data were compared with Antarctic station observations, including surface-layer and upper-layer atmospheric observations, on intraseasonal and interannual timescales. At the interannual timescale, atmospheric pressure at different height levels in the ERA-40 data are in better agreement with observed pressure than that in the NCEP-NCAR reanalysis data. ERA-40 reanalysis also outperforms NCEP-NCAR reanalysis in atmospheric temperature, except in the surface layer where the biases are somewhat larger. The wind velocity fields in both datasets do not agree well with surface-and upper-layer atmospheric observations. At intraseasonal timescales, both datasets capture the observed intraseasonal variability in pressure and temperature during austral winter. | 于乐江 张占海 周明煜 Shiyuan ZHONG Donald LENSCHOW Hsiaoming HSU 吴辉碇 孙波 | 2010 | Advances in Atmospheric Sciences2010，27，5： | 2 |
| 2 | The stably stratified boundary layer over the great plains显示文摘 | Donald H. Lenschow Xing Sheng Li Cui Juan Zhu B. Boba Stankov | 1988 | Boundary - Layer Meteorology (-)1988，，1： | 1 |
| 3 | The stably stratified boundary layer over the great plains显示文摘 | Donald H. Lenschow Xing Sheng Li Cui Juan Zhu B. Boba Stankov | 1988 | Boundary - Layer Meteorology (-)1988，，1： | 1 |
| 4 | Analysis of Boundary Layer Structure,Turbulence,and Flux Variations before and after the Passage of a Sea Breeze Front Using Meteorological Tower Data显示文摘A detailed analysis of a sea breeze front(SBF)that penetrated inland in the Beijing–Tianjin–Hebei urban agglomeration of China was conducted.We focused on the boundary layer structure,turbulence intensity,and fluxes before and after the SBF passed through two meteorological towers in the urban areas of Tianjin and Beijing,respectively.Significant changes in temperature,humidity,winds,CO_(2),and aerosol concentrations were observed as the SBF passed.Differences in these changes at the two towers mainly resulted from their distances from the ocean,boundary layer conditions,and background turbulences.As the SBF approached,a strong updraft appeared in the boundary layer,carrying near-surface aerosols aloft and forming the SBF head.This was followed by a broad downdraft,which destroyed the near-surface inversion layer and temporarily increased the surface air temperature at night.The feeder flow after the thermodynamic front was characterized by low-level jets horizontally,and downdrafts and occasional updrafts vertically.Turbulence increased significantly during the SBF’s passage,causing an increase in the standard deviation of wind components in speed.The increase in turbulence was more pronounced in a stable boundary layer compared to that in a convective boundary layer.The passage of the SBF generated more mechanical turbulences,as indicated by increased friction velocity and turbulent kinetic energy(TKE).The shear term in the TKE budget equation increased more significantly than the buoyancy term.The atmosphere shifted to a forced convective state after the SBF’s passage,with near isotropic turbulences and uniform mixing and diffusion of aerosols.Sensible heat fluxes(latent heat and CO_(2)fluxes)showed positive(negative)peaks after the SBF’s passage,primarily caused by horizontal and vertical transport of heat(water vapor and CO_(2))during its passage.This study enhances understanding of boundary layer changes,turbulences,and fluxes during the passage of SBFs over urban areas. | Ju LI Junxia DOU Donald H. LENSCHOW Mingyu ZHOU Lihong MENG Xiaobin QIU Yubing PAN Jingjiang ZHANG | 2023 | Journal of Meteorological Research2023，37，6： | 0 |
| 5 | 第2章 大气观测系统100年进步显示文摘虽然在美国气象学会于1919年成立之前,大气观测系统已经是气象的重要组成部分,过去的100年里,无论是观测的数量还是种类都获得了稳定增加。本文给出了观测系统研发的案例,诠释这些系统如何促成了科学发现。这些案例包括了与边界层、高空、云和降水以及太阳和地球辐射相关的观测系统。对应用广泛的特殊观测系统,例如雷达、光达和研究用飞机等进行了讨论,并给出在天气和气候预报中应用的个例。这些个例中还包含了臭氧和二氧化碳等特殊的化学观测。观测系统的信息源,包括本文集其他章节涉及内容,也进行了讨论。过去100年大气观测系统的特征,是社会对天气观测的需求与大气过程基本气象研究需求之间的协同。在后半程里,观测系统的改进得到数值模式对更高分辨率数据、长期观测和更好的全球覆盖等不断增长需求的推进。这也带来数据获取和获得来自不断增加的各种观测系统类型和观测网的融合数据的需求,这样的趋势或将持续。 | 杰弗里·斯蒂斯 DARREL BAUMGARDNER JULIE HAGGERTY R.MICHAEL HARDESTY WEN-CHAU LEE DONALD LENSCHOW PETER PILEWSKIE PAUL L.SMITH MATTHIAS STEINER HOLGER V?MEL 贾朋群 李婧华 | 2019 | 气象科技进展2019，9，S01： | 0 |
| 6 | Parameterizations of the Daytime Friction Velocity, Temperature Scale, and Upslope Flow over Gently Inclined Terrain in Calm Synoptic Conditions显示文摘A set of new parameterizations for the friction velocity and temperature scale over gently sloped terrain and in calm synoptic conditions are theoretically derived. The friction velocity is found to be proportional to the product of the square root of the total accumulated heating in the boundary layer and the sinusoidal function of the slope angle, while the temperature scale is proportional to the product of the boundary layer depth, the sinusoidal function of the slope angle and the potential temperature gradient in the free atmosphere. Using the new friction velocity parameterization, together with a parameterization of eddy diffusivity and an initial potential temperature profile around sunrise, an improved parameterization for the thermally induced upslope flow profile is derived by solving the Prandtl equations. The upslope flow profile is found to be simply proportional to the friction velocity. | 张占海 周明煜 Sharon ZHONG Donald H. LENSCHOW Qing WANG | 2009 | Advances in Atmospheric Sciences2009，26，3： | 0 |
| 7 | Challenges and Opportunities in Urban Meteorology Research and Forecast显示文摘An international workshop on urban meteorolo gy: observation and modeling, was jointly held by the Institute of Urban Meteorology ( China ) and the National Center for Atmospheric Research (US) in Beijing, October, 2004. The workshop was intend ed to share recent progress in urban meteorologica research, discuss issues related to research and development priorities faced by diverse Chinese in stitutions, and explore collaboration opportunities between Chinese and US research institutions. This article summarizes the major issues discussed at the workshop, including observation on urban boundary layer, urban landuse modeling, socio-economic impacts of weather and climates, and air quality in urban environment. It includes recommendations fo future urban meteorology observational and model- ing research, and potential collaborative opportuni- ties between China and US. | Wang Yingchun Li Ju Chen Fei Lenschow Donald Sun Jielun Niyogi Dev Lau Kaihon Jiang Weimei Ding Guoan Wu Dui | 2005 | Science Foundation in China2005，13，1： | 0 |
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