气候变化领域集成服务门户(CCPortal): When and where horizontal advection is critical to alter atmospheric boundary layer dynamics over land: The need for a conceptual framework

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DOI	10.1016/j.atmosres.2021.105825
	When and where horizontal advection is critical to alter atmospheric boundary layer dynamics over land: The need for a conceptual framework
	Pal S.; Clark N.E.; Lee T.R.; Conder M.; Buban M.
发表日期	2021
ISSN	0169-8095
卷号	264
英文摘要	The thermodynamic properties of the atmospheric boundary layer (ABL) play an important role in several atmospheric processes such as convection initiation, turbulence mixing, the exchange of heat and momentum, and cloud-microphysics. Since the ABL depth (henceforth, BLD) defines the volume of the ABL, many studies consider BLD to be a key scaling parameter to understand and quantify ABL mixing processes. However, most of these studies attributed both BLD temporal and horizontal variability on various scales solely to the impact of underlying surface forcing via locally generated buoyancy fluxes and static stability. We argue that the impact of horizontal advection is often neglected yet important for a more thorough understanding of ABL thermodynamics and kinematics. Here we identified four potentially advection-dominated ABL regimes across (1) the urban-rural interface, (2) complex terrain and adjacent plains, (3) the land-sea interface where horizontal transport of marine boundary layer airmasses influences the regional ABL over coastal areas, and (4) frontal environments where mid-latitude cyclones affect ABL processes via passages of cold and warm frontal boundaries. We then introduced a conceptual framework based on observations so that ABL processes are explained not only by surface forcing but also by horizontal advection of mass, momentum, and energy. This work will help advance our understanding of ABL processes and single out potential sources that trigger drastic changes in ABL thermodynamic features including the BLDs under diverse horizontal advection environments. © 2021 The Author(s)
英文关键词	Atmospheric boundary layer; Complex terrain; Frontal system; Horizontal advection; Temporal variability
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/236571
作者单位	Atmospheric Science Division, Department of Geosciences, Texas Tech University, Lubbock, TX, United States; Honors College, Texas Tech University, Lubbock, TX, United States; Cooperative Institute for Mesoscale Meteorological Studies (CIMMS), Norman, OK, United States; NOAA Air Resources Laboratory Atmospheric Turbulence and Diffusion Division, Oak Ridge, TN, United States; National Weather Service Weather Forecast Office, Lubbock, TX, United States
推荐引用方式 GB/T 7714	Pal S.,Clark N.E.,Lee T.R.,et al. When and where horizontal advection is critical to alter atmospheric boundary layer dynamics over land: The need for a conceptual framework[J],2021,264.
APA	Pal S.,Clark N.E.,Lee T.R.,Conder M.,&Buban M..(2021).When and where horizontal advection is critical to alter atmospheric boundary layer dynamics over land: The need for a conceptual framework.Atmospheric Research,264.
MLA	Pal S.,et al."When and where horizontal advection is critical to alter atmospheric boundary layer dynamics over land: The need for a conceptual framework".Atmospheric Research 264(2021).