Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028970 |
Evaluation of Turbulence Stability Schemes of Land Models for Stable Conditions | |
Lapo, K.1,2; Nijssen, B.2; Lundquist, J. D.2 | |
2019-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:6页码:3072-3089 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA |
英文摘要 | During stable conditions, simulated sensible heat fluxes, Q(h), in land models exhibit a wide range of behavior, with some models decoupling the atmosphere and land surface, while others continue turbulent exchange. This behavior is dictated by the representation of stability within the model. We explicitly test the representation of Q(h) during stable conditions using observed surface temperature, air temperature, and wind speed at the Shallow Cold Pool (SCP) Experiment site in Colorado, USA. This site is characterized by frequent stable conditions and weak-wind conditions, which are known to be difficult to represent in turbulence schemes. We test the log-linear, Louis, Holtslag and de Bruin, Beljaar and Holtslag, and Cheng and Brutsaert stability schemes against the observations at the SCP site. We also evaluate the minimum conductance assumption commonly implemented in land models. Simulated Q(h) biases are generally small, due largely to compensating errors. Parameterizations could represent Q(h) in strong-wind conditions and during the transition from a weak- to strong-wind regime. The behavior of simulated Q(h) during strong winds was controlled by the aerodynamic surface roughness, z(0). All models, except those that maintain a minimum conductance, were unable to represent turbulence in the weak-wind regime. We discuss the interacting roles of countergradient fluxes, intermittent turbulence, and decoupled turbulence during this regime. Finally, we list the characteristics that a turbulence parameterization should include and recommend that land models should include a minimum conductance to simulate Q(h) in the weak-wind regime. |
英文关键词 | land-atmosphere interaction sensible heat flux model development stable boundary layers turbulence regimes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464653500014 |
WOS关键词 | BOUNDARY-LAYER ; ENERGY-BALANCE ; SENSIBLE HEAT ; PROFILE RELATIONSHIPS ; SCALAR TRANSFER ; WIND-SPEED ; SNOW ; FLUXES ; TEMPERATURE ; SURFACES |
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/181714 |
专题 | 气候变化 |
作者单位 | 1.Univ Bayreuth, Micrometeorol Grp, Bayreuth, Germany; 2.Univ Washington, Civil & Environm Engn, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Lapo, K.,Nijssen, B.,Lundquist, J. D.. Evaluation of Turbulence Stability Schemes of Land Models for Stable Conditions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(6):3072-3089. |
APA | Lapo, K.,Nijssen, B.,&Lundquist, J. D..(2019).Evaluation of Turbulence Stability Schemes of Land Models for Stable Conditions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(6),3072-3089. |
MLA | Lapo, K.,et al."Evaluation of Turbulence Stability Schemes of Land Models for Stable Conditions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.6(2019):3072-3089. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论