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DOI10.1175/JCLI-D-17-0543.1
Evaluation of Planetary Boundary Layer Simulation in GFDL Atmospheric General Circulation Models
Shin, Hyeyum Hailey1,2; Ming, Yi2; Zhao, Ming2; Golaz, Jean-Christophe3; Xiang, Baoqiang1,2; Guo, Huan1,2
2018-07-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2018
卷号31期号:13页码:5071-5087
文章类型Article
语种英语
国家USA
英文摘要

This study describes the performance of two Geophysical Fluid Dynamics Laboratory (GFDL) atmospheric general circulation models (AGCMs) in simulating the climatologies of planetary boundary layer (PBL) parameters, with a particular focus on the diurnal cycles. The two models differ solely in the PBL parameterization: one uses a prescribed K-profile parameterization (KPP) scheme with an entrainment parameterization, and the other employs a turbulence kinetic energy (TKE) scheme. The models are evaluated through comparison with the reanalysis ensemble, which is generated from European Centre for Medium-Range Weather Forecasts (ECMWF) twentieth-century reanalysis (ERA-20C), ERA-Interim, NCEP CFSR, and NASA MERRA, and the following systematic biases are identified. The models exhibit widespread cold biases in the high latitudes, and the biases are smaller when the KPP scheme is used. The diurnal cycle amplitudes are underestimated in most dry regions, and the model with the TKE scheme simulates larger amplitudes. For the near-surface winds, the models underestimate both the daily means and the diurnal amplitudes; the differences between the models are relatively small compared to the biases. The role of the PBL schemes in simulating the PBL parameters is investigated through the analysis of vertical profiles. The Sahara, which is suitable for focusing on the role of vertical mixing in dry PBLs, is selected for a detailed analysis. It reveals that compared to the KPP scheme, the heat transport is weaker with the TKE scheme in both convective and stable PBLs as a result of weaker vertical mixing, resulting in larger diurnal amplitudes. Lack of nonlocal momentum transport from the nocturnal low-level jets to the surfaces appears to explain the underestimation of the near-surface winds in the models.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000437827700007
WOS关键词LARGE-SCALE MODELS ; DIURNAL CYCLES ; REANALYSIS PRODUCTS ; GLOBAL ATMOSPHERE ; SURFACE FLUXES ; ERA-INTERIM ; PART I ; CLOSURE ; PRECIPITATION ; SENSITIVITY
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/20156
专题气候变化
作者单位1.Univ Corp Atmospheric Res, Cooperat Programs Adv Earth Syst Sci, Boulder, CO 80305 USA;
2.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08540 USA;
3.Lawrence Livermore Natl Lab, Livermore, CA USA
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GB/T 7714
Shin, Hyeyum Hailey,Ming, Yi,Zhao, Ming,et al. Evaluation of Planetary Boundary Layer Simulation in GFDL Atmospheric General Circulation Models[J]. JOURNAL OF CLIMATE,2018,31(13):5071-5087.
APA Shin, Hyeyum Hailey,Ming, Yi,Zhao, Ming,Golaz, Jean-Christophe,Xiang, Baoqiang,&Guo, Huan.(2018).Evaluation of Planetary Boundary Layer Simulation in GFDL Atmospheric General Circulation Models.JOURNAL OF CLIMATE,31(13),5071-5087.
MLA Shin, Hyeyum Hailey,et al."Evaluation of Planetary Boundary Layer Simulation in GFDL Atmospheric General Circulation Models".JOURNAL OF CLIMATE 31.13(2018):5071-5087.
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