DOI: 10.1002/2015MS000468
Scopus记录号: 2-s2.0-84959539835
论文题名: Intercomparison of methods of coupling between convection and large-scale circulation: 1. Comparison over uniform surface conditions
作者: Daleu C ; L ; , Plant R ; S ; , Woolnough S ; J ; , Sessions S ; , Herman M ; J ; , Sobel A ; , Wang S ; , Kim D ; , Cheng A ; , Bellon G ; , Peyrille P ; , Ferry F ; , Siebesma P ; , Van Ulft L
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 4 起始页码: 1576
结束页码: 1601
语种: 英语
英文关键词: Gravity waves
; Temperature
; Thermal gradients
; Cloud resolving model
; International intercomparison
; Large-scale circulation
; Linear relationships
; Multiple equilibrium
; Parameterized
; Radiative-convective equilibrium
; Tropical convection
; Oceanography
; circulation
; comparative study
; convection
; gravity wave
; numerical method
; numerical model
; physics
; precipitation (climatology)
; sea surface temperature
; temperature gradient
; troposphere
英文摘要: As part of an international intercomparison project, a set of single-column models (SCMs) and cloud-resolving models (CRMs) are run under the weak-temperature gradient (WTG) method and the damped gravity wave (DGW) method. For each model, the implementation of the WTG or DGW method involves a simulated column which is coupled to a reference state defined with profiles obtained from the same model in radiative-convective equilibrium. The simulated column has the same surface conditions as the reference state and is initialized with profiles from the reference state. We performed systematic comparison of the behavior of different models under a consistent implementation of the WTG method and the DGW method and systematic comparison of the WTG and DGW methods in models with different physics and numerics. CRMs and SCMs produce a variety of behaviors under both WTG and DGW methods. Some of the models reproduce the reference state while others sustain a large-scale circulation which results in either substantially lower or higher precipitation compared to the value of the reference state. CRMs show a fairly linear relationship between precipitation and circulation strength. SCMs display a wider range of behaviors than CRMs. Some SCMs under the WTG method produce zero precipitation. Within an individual SCM, a DGW simulation and a corresponding WTG simulation can produce different signed circulation. When initialized with a dry troposphere, DGW simulations always result in a precipitating equilibrium state. The greatest sensitivities to the initial moisture conditions occur for multiple stable equilibria in some WTG simulations, corresponding to either a dry equilibrium state when initialized as dry or a precipitating equilibrium state when initialized as moist. Multiple equilibria are seen in more WTG simulations for higher SST. In some models, the existence of multiple equilibria is sensitive to some parameters in the WTG calculations. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75956
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Meteorology, University of Reading, Reading, United Kingdom; National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; Department of Physics, New Mexico Tech, Socorro, NM, United States; Department of Environmental Sciences, Columbia University, New York, NY, United States; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Climate Science Branch, NASA Langley Research Centre, Hampton, VA, United States; The Department of Physics, University of Auckland, Auckland, New Zealand; Meteo France, Toulouse, France; Royal Netherlands Meteorological Institute, De Bilt, Netherlands
Recommended Citation:
Daleu C,L,, Plant R,et al. Intercomparison of methods of coupling between convection and large-scale circulation: 1. Comparison over uniform surface conditions[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(4)