Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China

Aerodynamic roughness length (zom) is an important parameter for reliably simulating surface fluxes. The parameter varies with wind speed, atmospheric stratification, terrain and other factors; however, variations of this parameter are not properly considered in most models, which may result in unce...

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Main Authors: Yanlian Zhou, Xiaomin Sun, Weimin Ju, Xuefa Wen, Dexin Guan
Format: Article
Language:English
Published: Springer 2012-01-01
Series:Terrestrial, Atmospheric and Oceanic Sciences
Subjects:
Online Access: http://tao.cgu.org.tw/images/attachments/v232p181.pdf
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author Yanlian Zhou
Xiaomin Sun
Weimin Ju
Xuefa Wen
Dexin Guan
author_facet Yanlian Zhou
Xiaomin Sun
Weimin Ju
Xuefa Wen
Dexin Guan
author_sort Yanlian Zhou
collection DOAJ
description Aerodynamic roughness length (zom) is an important parameter for reliably simulating surface fluxes. The parameter varies with wind speed, atmospheric stratification, terrain and other factors; however, variations of this parameter are not properly considered in most models, which may result in uncertainties in simulating surface latent heat and sensible heat flux. There have been few studies of the diurnal and wind-direction dependent variations in zom. This study analyzes the seasonal, diurnal and wind-direction-dependent variations in zom calculated from the profile of meteorological data for two forest systems of China, and explores the mechanism underlying these variations.
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spelling doaj.art-aa85ed776a93421c8f415ae026fb6faf2022-12-22T00:20:53ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802012-01-0123218110.3319/TAO.2011.10.06.01(A)1061Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of ChinaYanlian ZhouXiaomin SunWeimin JuXuefa WenDexin GuanAerodynamic roughness length (zom) is an important parameter for reliably simulating surface fluxes. The parameter varies with wind speed, atmospheric stratification, terrain and other factors; however, variations of this parameter are not properly considered in most models, which may result in uncertainties in simulating surface latent heat and sensible heat flux. There have been few studies of the diurnal and wind-direction dependent variations in zom. This study analyzes the seasonal, diurnal and wind-direction-dependent variations in zom calculated from the profile of meteorological data for two forest systems of China, and explores the mechanism underlying these variations. http://tao.cgu.org.tw/images/attachments/v232p181.pdf Aerodynamic roughnessSeasonal variationDiurnal variationWind-direction-dependent variation
spellingShingle Yanlian Zhou
Xiaomin Sun
Weimin Ju
Xuefa Wen
Dexin Guan
Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China
Terrestrial, Atmospheric and Oceanic Sciences
Aerodynamic roughness
Seasonal variation
Diurnal variation
Wind-direction-dependent variation
title Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China
title_full Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China
title_fullStr Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China
title_full_unstemmed Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China
title_short Seasonal, Diurnal and Wind-Direction-Dependent Variations of the Aerodynamic Roughness Length in Two Typical Forest Ecosystems of China
title_sort seasonal diurnal and wind direction dependent variations of the aerodynamic roughness length in two typical forest ecosystems of china
topic Aerodynamic roughness
Seasonal variation
Diurnal variation
Wind-direction-dependent variation
url http://tao.cgu.org.tw/images/attachments/v232p181.pdf
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AT xuefawen seasonaldiurnalandwinddirectiondependentvariationsoftheaerodynamicroughnesslengthintwotypicalforestecosystemsofchina
AT dexinguan seasonaldiurnalandwinddirectiondependentvariationsoftheaerodynamicroughnesslengthintwotypicalforestecosystemsofchina