Regional turbulent statistics over contrasting natural surfaces

T. J. Lyons; Li Fuqin; J. M. Hacker; Wan Li Cheng; Huang Xinmei

doi:10.1007/s703-001-8172-0

Regional turbulent statistics over contrasting natural surfaces

T. J. Lyons, Li Fuqin, J. M. Hacker, Wan Li Cheng, Huang Xinmei

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Abstract

Regional turbulent fluxes of momentum, sensible and latent heat collected over both agricultural and native vegetation in the south west of Australia are presented. Analysis of the energy spectrum illustrates that the most energetic eddies are between scales of 20 metres to 5 kilometres and highlights the spatial distance required to obtain representative regional fluxes. For the sensible heat flux, this distance is a function of measurement height whereas the latent flux is also influenced by surface variability. Statistics of these fluxes highlight that for the unstable surface layer, despite marked differences in the underlying vegetation and the corresponding sources of heat and moisture, heat is transported more efficiently than water vapour from the ground surface.

Original language	English
Pages (from-to)	183-194
Number of pages	12
Journal	Meteorology and Atmospheric Physics
Volume	78
DOIs	https://doi.org/10.1007/s703-001-8172-0
Publication status	Published - Dec 2001

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author = "Lyons, {T. J.} and Li Fuqin and Hacker, {J. M.} and Cheng, {Wan Li} and Huang Xinmei",

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AU - Lyons, T. J.

AU - Fuqin, Li

AU - Hacker, J. M.

AU - Cheng, Wan Li

AU - Xinmei, Huang

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N2 - Regional turbulent fluxes of momentum, sensible and latent heat collected over both agricultural and native vegetation in the south west of Australia are presented. Analysis of the energy spectrum illustrates that the most energetic eddies are between scales of 20 metres to 5 kilometres and highlights the spatial distance required to obtain representative regional fluxes. For the sensible heat flux, this distance is a function of measurement height whereas the latent flux is also influenced by surface variability. Statistics of these fluxes highlight that for the unstable surface layer, despite marked differences in the underlying vegetation and the corresponding sources of heat and moisture, heat is transported more efficiently than water vapour from the ground surface.

AB - Regional turbulent fluxes of momentum, sensible and latent heat collected over both agricultural and native vegetation in the south west of Australia are presented. Analysis of the energy spectrum illustrates that the most energetic eddies are between scales of 20 metres to 5 kilometres and highlights the spatial distance required to obtain representative regional fluxes. For the sensible heat flux, this distance is a function of measurement height whereas the latent flux is also influenced by surface variability. Statistics of these fluxes highlight that for the unstable surface layer, despite marked differences in the underlying vegetation and the corresponding sources of heat and moisture, heat is transported more efficiently than water vapour from the ground surface.

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JO - Meteorology and Atmospheric Physics

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ER -

Regional turbulent statistics over contrasting natural surfaces

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