气候变化领域集成服务门户(CCPortal): Improved Surface Layer Simulation Using Refined Vertical Resolution in the GFDL Atmospheric General Circulation Model

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DOI	10.1029/2018MS001437
	Improved Surface Layer Simulation Using Refined Vertical Resolution in the GFDL Atmospheric General Circulation Model
	Shin H.H.; Ming Y.; Zhao M.; Chen X.; Lin S.-J.
发表日期	2019
ISSN	19422466
起始页码	905
结束页码	917
卷号	11 期号:4
英文摘要	Surface layer (SL) variables (e.g., 2-m temperature [T2] and 10-m wind [U10]) are diagnosed by applying the flux-profile relationships based on Monin-Obukhov similarity theory to the lowest model height (LMH). This assumes that the LMH is in the SL, which is approximately the bottom 10% of the boundary layer, but atmospheric general circulation models rarely satisfy this in stable boundary layers (SBLs). To assess errors in the diagnostic variables due to the LMH solely linked to the diagnostic algorithm, offline tests of the flux-profile relationships are performed with LMH from a few meters to 60 m for three SBL regimes: weakly stable, very stable, and transition stability regimes. The results show that T2 and U10 are underestimated by O(0.1–1 °C) and O(0.1–1 m/s), respectively, if the LMH is higher than the SL height. The stronger the SL stability is, the larger the temperature biases are. The negative wind biases increase with the surface stress. Based on these findings, we analyze the impacts of the LMH on the climatologies of the diagnostic parameters in the Geophysical Fluid Dynamics Laboratory (GFDL) Atmosphere Model 4.0/Land Model 4.0. The results show reduced negative biases in T2 and U10 by lowering the LMH. The decrease of the overall bias over land is mainly due to the sensitivity of the diagnostic method to the LMH in SBLs, as shown in the offline tests. The overall increase in T2 and U10 over the oceans results from the increase in the actual near-surface temperature and wind rather than from the diagnostic method. ©2019. The Authors.
英文关键词	diagnostic parameter; GFDL AM4.0; lowest model level height; Monin-Obukhov similarity theory; surface layer; vertical resolution
语种	英语
scopus关键词	Clouds; Surface properties; Thermal stratification; Diagnostic parameter; GFDL AM4.0; lowest model level height; Monin-Obukhov similarity theory; Surface layers; Vertical resolution; Atmospheric boundary layer; boundary layer; detection method; general circulation model; parameter estimation; resolution; simulation; spatial resolution; surface layer; theoretical study
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156933
作者单位	Cooperative Programs for the Advancement of Earth System Science, UCAR, Boulder, CO, United States; Geophysical Fluid Dynamics Laboratory, NOAA, Princeton, NJ, United States; Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Shin H.H.,Ming Y.,Zhao M.,et al. Improved Surface Layer Simulation Using Refined Vertical Resolution in the GFDL Atmospheric General Circulation Model[J],2019,11(4).
APA	Shin H.H.,Ming Y.,Zhao M.,Chen X.,&Lin S.-J..(2019).Improved Surface Layer Simulation Using Refined Vertical Resolution in the GFDL Atmospheric General Circulation Model.Journal of Advances in Modeling Earth Systems,11(4).
MLA	Shin H.H.,et al."Improved Surface Layer Simulation Using Refined Vertical Resolution in the GFDL Atmospheric General Circulation Model".Journal of Advances in Modeling Earth Systems 11.4(2019).