About: Night-time airflow in a forest canopy near a mountain crest

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Night-time airflow within a deep and dense canopy near the top of a mountain ridge is investigated based on measurements at Bily Kriz, Czech Republic. A decoupled two-layer structure of canopy flow typically develops at night. While the above-canopy flow is most frequently an upslope-directed larger-scale flow over the ridge, the lower-canopy flow is downslope. However, the lower-canopy flow can be forced upslope when the wind speed above the canopy exceeds a well-defined limit. Less frequently, on the lee slope to the larger-scale flow, both the above-canopy and the lower-canopy flow are usually downslope, although a flow reversal in the lower canopy is also observed, accompanied with a large shear stress (friction velocity) above the canopy. We introduce a simple diagnostic model, which gives realistic values of the downslope or upslope direction and speed of the lower-canopy flow that agree well with the measurements. Night-time airflow within a deep and dense canopy near the top of a mountain ridge is investigated based on measurements at Bily Kriz, Czech Republic. A decoupled two-layer structure of canopy flow typically develops at night. While the above-canopy flow is most frequently an upslope-directed larger-scale flow over the ridge, the lower-canopy flow is downslope. However, the lower-canopy flow can be forced upslope when the wind speed above the canopy exceeds a well-defined limit. Less frequently, on the lee slope to the larger-scale flow, both the above-canopy and the lower-canopy flow are usually downslope, although a flow reversal in the lower canopy is also observed, accompanied with a large shear stress (friction velocity) above the canopy. We introduce a simple diagnostic model, which gives realistic values of the downslope or upslope direction and speed of the lower-canopy flow that agree well with the measurements. (en)
Title	Night-time airflow in a forest canopy near a mountain crest Night-time airflow in a forest canopy near a mountain crest (en)
skos:prefLabel	Night-time airflow in a forest canopy near a mountain crest Night-time airflow in a forest canopy near a mountain crest (en)
skos:notation	RIV/68378289:_____/10:00348522!RIV11-AV0-68378289
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA300420803), P(KJB3087301), Z(AV0Z30420517), Z(AV0Z60870520)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Potužníková, Kateřina Sedlák, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky atmosféry AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	274881
http://linked.open...ai/riv/idVysledku	RIV/68378289:_____/10:00348522
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Spruce forest; Canopy layer; Slope; Drainage flow; Wind profile (en)
http://linked.open.../riv/klicoveSlovo	Slope Spruce forest Canopy layer Drainage flow Wind profile
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[39E1A4891101]
http://linked.open...i/riv/nazevZdroje	Agricultural and Forest Meteorology
http://linked.open...in/vavai/riv/obor	DG
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Missing CO2 flux in night-time eddy covariance measurements CO2 and energy budget of a forest stand on a slope
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	150
http://linked.open...iv/tvurceVysledku	Janouš, Dalibor Pavelka, Marian Sedlák, Pavel Potužníková, Kateřina Aubinet, M. Heinesch, B. Yernaux, M.
http://linked.open...ain/vavai/riv/wos	000278244400010
http://linked.open...n/vavai/riv/zamer	Studium atmosférického obalu Země v interakci s pozemskými a kosmickými vlivy Spatial and functional dynamics of biological, ecological and socio-economic systems interacting with global climatic change
issn	0168-1923
number of pages	9 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Night-time airflow in a forest canopy near a mountain crest Night-time airflow in a forest canopy near a mountain crest Night-time airflow in a forest canopy near a mountain crest

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