Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026802 |
Antarctic boundary layer parametrization in a general circulation model: 1-D simulations facing summer observations at Dome C | |
Vignon, Etienne1; Hourdin, Frederic2; Genthon, Christophe1; Gallee, Hubert1; Bazile, Eric3; Lefebvre, Marie-Pierre2; Madeleine, Jean-Baptiste2,4; Van de Wiel, Bas J. H.5 | |
2017-07-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Netherlands |
英文摘要 | The parametrization of the atmospheric boundary layer (ABL) is critical over the Antarctic Plateau for climate modelling since it affects the climatological temperature inversion and the negatively buoyant near-surface flow over the ice-sheet. This study challenges state-of-the-art parametrizations used in general circulation models to represent the clear-sky summertime diurnal cycle of the ABL at Dome C, Antarctic Plateau. The Laboratoire de Meteorologie Dynamique-Zoom model is run in a 1-D configuration on the fourth Global Energy and Water Cycle Exchanges Project Atmospheric Boundary Layers Study case. Simulations are analyzed and compared to observations, giving insights into the sensitivity of one model that participates to the intercomparison exercise. Snow albedo and thermal inertia are calibrated leading to better surface temperatures. Using the so-called "thermal plume model" improves the momentum mixing in the diurnal ABL. In stable conditions, four turbulence schemes are tested. Best simulations are those in which the turbulence cuts off above 35 m in the middle of the night, highlighting the contribution of the longwave radiation in the ABL heat budget. However, the nocturnal surface layer is not stable enough to distinguish between surface fluxes computed with different stability functions. The absence of subsidence in the forcings and an underestimation of downward longwave radiation are identified to be likely responsible for a cold bias in the nocturnal ABL. Apart from model-specific improvements, the paper clarifies on which are the critical aspects to improve in general circulation models to correctly represent the summertime ABL over the Antarctic Plateau. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407900300008 |
WOS关键词 | TURBULENCE CLOSURE-MODEL ; LOW-LEVEL JETS ; STRATIFIED GEOPHYSICAL FLOWS ; SURFACE-ENERGY BALANCE ; SEA-ICE ; TEMPERATURE INVERSION ; SCALAR ROUGHNESS ; CLIMATE-CHANGE ; SNOW-SURFACE ; LOW WINDS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34127 |
专题 | 气候变化 |
作者单位 | 1.Univ Grenoble Alpes, CNRS, IRD, IGE, Grenoble, France; 2.CNRS, UMR 8539, Lab Meteorol Dynam IPSL, Paris, France; 3.CNRM, GAME, Toulouse, France; 4.UPMC Univ Paris 06, Sorbonne Univ, Lab Meteorol Dynam IPSL, UMR 8539, Paris, France; 5.Delft Univ Technol, Fac Civil Engn & Geosci, Dept Geosci & Remote Sensing, Delft, Netherlands |
推荐引用方式 GB/T 7714 | Vignon, Etienne,Hourdin, Frederic,Genthon, Christophe,et al. Antarctic boundary layer parametrization in a general circulation model: 1-D simulations facing summer observations at Dome C[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(13). |
APA | Vignon, Etienne.,Hourdin, Frederic.,Genthon, Christophe.,Gallee, Hubert.,Bazile, Eric.,...&Van de Wiel, Bas J. H..(2017).Antarctic boundary layer parametrization in a general circulation model: 1-D simulations facing summer observations at Dome C.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(13). |
MLA | Vignon, Etienne,et al."Antarctic boundary layer parametrization in a general circulation model: 1-D simulations facing summer observations at Dome C".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.13(2017). |
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