气候变化领域集成服务门户(CCPortal): Simulation of summer precipitation diurnal cycles over the Tibetan Plateau at the gray-zone grid spacing for cumulus parameterization

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DOI	10.1007/s00382-020-05181-x
	Simulation of summer precipitation diurnal cycles over the Tibetan Plateau at the gray-zone grid spacing for cumulus parameterization
	Ou T.; Chen D.; Chen X.; Lin C.; Yang K.; Lai H.-W.; Zhang F.
发表日期	2020
ISSN	0930-7575
起始页码	3525
结束页码	3539
卷号	54
英文摘要	The Tibetan Plateau (TP) is often referred to as the “water tower of Asia” or the “Third Pole”. It remains a challenge for most global and regional models to realistically simulate precipitation, especially its diurnal cycles, over the TP. This study focuses on evaluating the summer (June–August) precipitation diurnal cycles over the TP simulated by the Weather Research and Forecasting (WRF) model. The horizontal resolution used in this study is 9 km, which is within the gray-zone grid spacing that a cumulus parameterization scheme (CU) may or may not be used. We conducted WRF simulations with different cumulus schemes (CU experiments) and a simulation without CU (No_CU experiment). The selected CUs include the Grell-3D Ensemble (Grell), New Simplified Arakawa-Schubert (NSAS), and Multiscale Kain-Fritsch (MSKF). These simulations are compared with both the in-situ observations and satellite products. Results show that the scale-aware MSKF outperforms the other CUs in simulating precipitation in terms of both the mean intensity and diurnal cycles. In addition, the peak time of precipitation intensity is better captured by all the CU experiments than by the No_CU experiment. However, all the CU experiments tend to overestimate the mean precipitation and simulate an earlier peak of precipitation frequency when compared to observations. The frequencies and initiation timings for short-duration (1–3 h) and long-duration (> 6 h) precipitation events are well captured by the No_CU experiment, while these features are poorly reproduced by the CU experiments. The results demonstrate simulation without a CU outperforms those with a CU at the gray-zone spatial resolution in regard to the precipitation diurnal cycles. © 2020, The Author(s).
英文关键词	Cumulus scheme; Diurnal cycle; Precipitation; Tibetan plateau; WRF
语种	英语
scopus关键词	computer simulation; cumulus; diurnal variation; parameterization; precipitation assessment; precipitation intensity; spatial resolution; summer; weather forecasting; China; Qinghai-Xizang Plateau
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145530
作者单位	Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, 40530, Sweden; Department of Meteorology and Atmospheric Science, Center for Advanced Data Assimilation and Predictability Techniques, Pennsylvania State University, University Park, PA, United States; Rossby Centre, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden; Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China
推荐引用方式 GB/T 7714	Ou T.,Chen D.,Chen X.,et al. Simulation of summer precipitation diurnal cycles over the Tibetan Plateau at the gray-zone grid spacing for cumulus parameterization[J],2020,54.
APA	Ou T..,Chen D..,Chen X..,Lin C..,Yang K..,...&Zhang F..(2020).Simulation of summer precipitation diurnal cycles over the Tibetan Plateau at the gray-zone grid spacing for cumulus parameterization.Climate Dynamics,54.
MLA	Ou T.,et al."Simulation of summer precipitation diurnal cycles over the Tibetan Plateau at the gray-zone grid spacing for cumulus parameterization".Climate Dynamics 54(2020).