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DOI | 10.1007/s10546-014-9919-1 |
The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding | |
Bosveld, Fred C.1; Baas, Peter1; Steeneveld, Gert-Jan2; Holtslag, Albert A. M.2; Angevine, Wayne M.3; Bazile, Eric4; de Bruijn, Evert I. F.1; Deacu, Daniel5; Edwards, John M.6; Ek, Michael7; Larson, Vincent E.8; Pleim, Jonathan E.9; Raschendorfer, Matthias10; Svensson, Gunilla11,12 | |
发表日期 | 2014-08-01 |
ISSN | 0006-8314 |
卷号 | 152期号:2页码:157-187 |
英文摘要 | We describe and analyze the results of the third global energy and water cycle experiment atmospheric boundary layer Study intercomparison and evaluation study for single-column models. Each of the nineteen participating models was operated with its own physics package, including land-surface, radiation and turbulent mixing schemes, for a full diurnal cycle selected from the Cabauw observatory archive. By carefully prescribing the temporal evolution of the forcings on the vertical column, the models could be evaluated against observations. We focus on the gross features of the stable boundary layer (SBL), such as the onset of evening momentum decoupling, the 2-m minimum temperature, the evolution of the inertial oscillation and the morning transition. New process diagrams are introduced to interpret the variety of model results and the relative importance of processes in the SBL; the diagrams include the results of a number of sensitivity runs performed with one of the models. The models are characterized in terms of thermal coupling to the soil, longwave radiation and turbulent mixing. It is shown that differences in longwave radiation schemes among the models have only a small effect on the simulations; however, there are significant variations in downward radiation due to different boundary-layer profiles of temperature and humidity. The differences in modelled thermal coupling to the land surface are large and explain most of the variations in 2-m air temperature and longwave incoming radiation among models. Models with strong turbulent mixing overestimate the boundary-layer height, underestimate the wind speed at 200 m, and give a relatively large downward sensible heat flux. The result is that 2-m air temperature is relatively insensitive to turbulent mixing intensity. Evening transition times spread 1.5 h around the observed time of transition, with later transitions for models with coarse resolution. Time of onset in the morning transition spreads 2 h around the observed transition time. With this case, the morning transition appeared to be difficult to study, no relation could be found between the studied processes, and the variation in the time of the morning transition among the models. |
英文关键词 | Diurnal cycle;Evening transition;GABLS;Land-atmosphere interaction;Low-level jet;Model evaluation;Model intercomparison;Morning transition;Single-column models;Stable boundary layer |
语种 | 英语 |
WOS记录号 | WOS:000340409900003 |
来源期刊 | BOUNDARY-LAYER METEOROLOGY |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/61821 |
作者单位 | 1.Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands; 2.Wageningen Univ, NL-6700 AP Wageningen, Netherlands; 3.Univ Colorado, CIRES, NOAA Earth Syst Res Lab, Boulder, CO 80309 USA; 4.Meteo France, Toulouse, France; 5.Environm Canada, Gatineau, PQ, Canada; 6.MetOffice, Exeter, Devon, England; 7.Natl Ctr Environm Predict, Washington, DC USA; 8.Univ Wisconsin, Milwaukee, WI 53201 USA; 9.US EPA, Res Triangle Pk, NC 27711 USA; 10.Deutsch Wetterdienst, Offenbach, Germany; 11.Stockholm Univ, Dept Meteorol, S-10691 Stockholm, Sweden; 12.Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Bosveld, Fred C.,Baas, Peter,Steeneveld, Gert-Jan,et al. The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding[J]. 美国环保署,2014,152(2):157-187. |
APA | Bosveld, Fred C..,Baas, Peter.,Steeneveld, Gert-Jan.,Holtslag, Albert A. M..,Angevine, Wayne M..,...&Svensson, Gunilla.(2014).The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding.BOUNDARY-LAYER METEOROLOGY,152(2),157-187. |
MLA | Bosveld, Fred C.,et al."The Third GABLS Intercomparison Case for Evaluation Studies of Boundary-Layer Models. Part B: Results and Process Understanding".BOUNDARY-LAYER METEOROLOGY 152.2(2014):157-187. |
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