DOI: 10.1175/JCLI-D-14-00596.1
Scopus记录号: 2-s2.0-84942067895
论文题名: Evaluation of near-surface variables and the vertical structure of the boundary layer in CMIP5 models
作者: Svensson G. ; Lindvall J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 13 起始页码: 5233
结束页码: 5253
语种: 英语
Scopus关键词: Atmospheric boundary layer
; Atmospheric structure
; Boundary layers
; Climate change
; Climate models
; Heat flux
; Wind
; Boundary layer depth
; Climate change scenarios
; High temperature
; Near-surface variables
; Southern great plains
; Surface radiative flux
; Turbulent heat fluxes
; Vertical structures
; Atmospheric thermodynamics
; air temperature
; atmospheric modeling
; atmospheric structure
; boundary layer
; diurnal variation
; heat flux
; wind velocity
; Great Plains
; Oklahoma [United States]
; United States
英文摘要: The diurnal cycles of near-surface variables and turbulent heat fluxes are evaluated in 16 models from phase 5 of CMIP (CMIP5) and compared with observations from 26 flux tower sites. The diurnal cycle of 2-m temperature agrees well in general with what is observed. The amplitude of the diurnal cycle of wind speed shows a large intermodel spread and is often overestimated at midlatitude grassland sites and underestimated at midlatitude forest sites. There is a substantial systematic negative bias in the nighttime net surface radiative flux, which is partly compensated for by the turbulent heat fluxes. Four models (CESM1, BCC_CSM1.1, HadGEM2-A, and IPSL-CM5A) are evaluated in more detail, including the vertical structure of the atmospheric boundary layer, at the ARM Southern Great Plains site in Oklahoma. At that site, all models tend to frequently overestimate the boundary layer depth and the wind turning in the boundary layer reveals large intermodel differences. In summer, these models exhibit a substantial warm bias with particularly high daytime temperatures. These high temperatures are associated with very small latent heat fluxes, indicating that the soil is too dry, which is likely to impact climate change scenarios. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50716
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden
Recommended Citation:
Svensson G.,Lindvall J.. Evaluation of near-surface variables and the vertical structure of the boundary layer in CMIP5 models[J]. Journal of Climate,2015-01-01,28(13)