气候变化领域集成服务门户(CCPortal): Surface and Atmospheric Driven Variability of the Single-Layer Urban Canopy Model Under Clear-Sky Conditions Over London

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DOI	10.1029/2019JD032167
	Surface and Atmospheric Driven Variability of the Single-Layer Urban Canopy Model Under Clear-Sky Conditions Over London
	Tsiringakis A.; Holtslag A.A.M.; Grimmond S.; Steeneveld G.J.
发表日期	2020
ISSN	2169897X
卷号	125 期号:14
英文摘要	Urban canopy models (UCMs) are parametrization schemes that are used to improve weather forecasts in urban areas. The performance of UCMs depends on understanding potential uncertainty sources that can generally originate from the (a) urban surface parameters, (b) atmospheric forcing, and (c) physical description. Here, we investigate the relative importance of surface and atmospheric driven model sensitivities of the single-layer urban canopy model when fully interactive with a 1-D configuration of the Weather Research and Forecasting model (WRF). The impact of different physical descriptions in UCMs and other key parameterization schemes of WRF is considered. As a case study, we use a 54-hr period with clear-sky conditions over London. Our analysis is focused on the surface radiation and energy flux partitioning and the intensity of turbulent mixing. The impact of changes in atmospheric forcing and surface parameter values on model performance appears to be comparable in magnitude. The advection of potential temperature, aerosol optical depth, exchange coefficient and roughness length for heat, surface albedo, and the anthropogenic heat flux are the most influential. Some atmospheric forcing variations have similar impact on the key physical processes as changes in surface parameters. Hence, error compensation may occur if one optimizes model performance using a single variable or combinations that have potential for carryover effects (e.g., temperature). Process diagrams help differences to be understood in the physical description of different UCMs, boundary layer, and radiation schemes and between the model and the observations. ©2020. The Authors.
英文关键词	atmospheric boundary layer; land-atmosphere interactions; London; surface energy balance; urban surface model; WRF
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185899
作者单位	Meteorology and Air Quality Section, Wageningen University & Research, Wageningen, Netherlands; Department of Meteorology, University of Reading, Reading, United Kingdom
推荐引用方式 GB/T 7714	Tsiringakis A.,Holtslag A.A.M.,Grimmond S.,et al. Surface and Atmospheric Driven Variability of the Single-Layer Urban Canopy Model Under Clear-Sky Conditions Over London[J],2020,125(14).
APA	Tsiringakis A.,Holtslag A.A.M.,Grimmond S.,&Steeneveld G.J..(2020).Surface and Atmospheric Driven Variability of the Single-Layer Urban Canopy Model Under Clear-Sky Conditions Over London.Journal of Geophysical Research: Atmospheres,125(14).
MLA	Tsiringakis A.,et al."Surface and Atmospheric Driven Variability of the Single-Layer Urban Canopy Model Under Clear-Sky Conditions Over London".Journal of Geophysical Research: Atmospheres 125.14(2020).