气候变化领域集成服务门户(CCPortal): Turbulence parameterizations for dispersion in sub-kilometer horizontally non-homogeneous flows

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DOI	10.1016/j.atmosres.2019.05.018
	Turbulence parameterizations for dispersion in sub-kilometer horizontally non-homogeneous flows
	Tomasi E.; Giovannini L.; Falocchi M.; Antonacci G.; Jiménez P.A.; Kosovic B.; Alessandrini S.; Zardi D.; Delle Monache L.; Ferrero E.
发表日期	2019
ISSN	0169-8095
起始页码	122
结束页码	136
卷号	228
英文摘要	Results from numerical simulations of tracer dispersion from a point source (an incinerator plant) over complex terrain are presented. Different modeling chains are used and model output compared with ground concentration measurements from the 2017 Bolzano Tracer EXperiment (BTEX) over the Eastern Italian Alps. In particular, meteorological simulations are run with the Weather Research and Forecasting (WRF) model to reproduce the flow field at sub-kilometer grid resolution (300 m). The simulations apply observational nudging of upper-air and surface meteorological observations, as well as an improved snow cover initialization, which allow to better characterize valley winds in the afternoon. In addition, the simulations are run by substituting the default closure constants of the Planetary Boundary Layer (PBL) scheme with a set of values specific for complex terrain applications. Meteorological results are evaluated comparing wind speed standard deviations with measurements from a SODAR instrumentation deployed during the experiment. The meteorological fields provide the input to two different dispersion models: the CALMET/CALPUFF puff-Gaussian model, representing the reference standard model often used in impact assessments, and the WSI/SPRAY-WEB Lagrangian particle model. Different parameterizations for the calculation of the dispersion coefficients, based either on surface layer scales or on the turbulent kinetic energy from the WRF PBL scheme, are tested. A statistical analysis of the results from all the dispersion models is performed to assess the simulation performance against tracer concentration measurements collected during the BTEX campaign. © 2019 Elsevier B.V.
英文关键词	Complex terrain; Dispersion modeling; Turbulence parameterizations
语种	英语
scopus关键词	Atmospheric thermodynamics; Boundary layers; Computational fluid dynamics; Dispersions; Kinetic energy; Kinetics; Landforms; Parameterization; Plant shutdowns; Snow; Turbulence; Wind; Wind power; Complex terrains; Dispersion modeling; Lagrangian particle model; Meteorological observation; Meteorological simulations; Planetary boundary layers; Turbulent kinetic energy; Weather research and forecasting models; Weather forecasting; atmospheric modeling; boundary layer; complex terrain; computer simulation; flow field; ground-based measurement; numerical model; parameter estimation; turbulence; valley; Alps; Italy; Neptunia
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162259
作者单位	Atmospheric Physics Group, Dpt. of Civil, Environmental and Mechanical Engineering, University of Trento, Italy; CISMA s.r.l. Centro di Ingegneria e Sviluppo Modelli per l'Ambiente, Bolzano, Italy; National Center for Atmospheric Research (NCAR), Boulder, CO, United States; Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy; Istituto di Scienze dell'Atmosfera e del Clima - Consiglio Nazionale delle Ricerche, Torino, Italy
推荐引用方式 GB/T 7714	Tomasi E.,Giovannini L.,Falocchi M.,et al. Turbulence parameterizations for dispersion in sub-kilometer horizontally non-homogeneous flows[J],2019,228.
APA	Tomasi E..,Giovannini L..,Falocchi M..,Antonacci G..,Jiménez P.A..,...&Ferrero E..(2019).Turbulence parameterizations for dispersion in sub-kilometer horizontally non-homogeneous flows.Atmospheric Research,228.
MLA	Tomasi E.,et al."Turbulence parameterizations for dispersion in sub-kilometer horizontally non-homogeneous flows".Atmospheric Research 228(2019).