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Description
  • V průběhu vegetační sezóny v roce 2001 byl sledován aerodynamický odpor (ra) smrkového porostu na základe analýzy vertikálního profilu rychlosti větru. Měření hodnot ra bylo uskutečněno na pracovišti Bílý Kříž (49°30´ N, 18°32´E, 800 - 900 m n m). Porost tvoří 20-letá monokultura smrku ztepilého s průmernou výškou h = 8.07 m a s hustotou 1880 stromů na hektar v části Fs.Aerodynamický odpor je čas potřebný pro výměnu tepla nebo vodní páry z jednotkové plochy na jednotkový objem vzduchu je závislý částečně na rychlosti větru a částečně na geometrii povrchu. Průměrná hodnota hodnota drsnosti (z0) byla 0.61 m v části Fd a z0 = 0.69 v části Fs. Aerodynamický odpor mladého smrkového porostu byl určen jednoduchou metodou na základě analýzy vertikálního profilu rychlosti větru. Průměrná hodnota ra byla 4.32 s m-1 v části Fd, s maximem 5.93 s m-1 v květnu a minimem 3.04 s.m-1 v říjnu. V části Fs byla průměrná hodnota ra 4.51 s m-1 v intervalu hodnot (3.64, 5.60) s m-1 (cs)
  • The aerodynamic resistance (ra) of a young spruce forest stand was estimated during the sourse of a growing season 2001 on the basis of the vertical wind speed profile analysis. the measurements of ra values were made at Bílý Kříž, Czech republik (N49 30´, E 18 32´, 800-900 m a.s.l.). The aerodynamic resistance is the time for unit volume of air to exchange heat or water vapour with unit area of surface. This time depends partly on the wind speed and partly on the surface geometry. The mean dynamic roughness length (zo) was 0.61 m in Fd and zo=0.69 m in Fs plot. The aerodynamic resistance of a young spruce forest stand was determined using a simple method on the basis of vertical wind speed profiles analysis.The mean ra value was 4.32 s m -1 in Fd plot, the maximum ra value was 5.93 s m-1 in May and minimum 3.04 s m-1 in October. In Fs plot the mean value of ra was 4.51 s m-1 and the ra values were in interval of values (3.65, 5.60) s m-1.
  • The aerodynamic resistance (ra) of a young spruce forest stand was estimated during the sourse of a growing season 2001 on the basis of the vertical wind speed profile analysis. the measurements of ra values were made at Bílý Kříž, Czech republik (N49 30´, E 18 32´, 800-900 m a.s.l.). The aerodynamic resistance is the time for unit volume of air to exchange heat or water vapour with unit area of surface. This time depends partly on the wind speed and partly on the surface geometry. The mean dynamic roughness length (zo) was 0.61 m in Fd and zo=0.69 m in Fs plot. The aerodynamic resistance of a young spruce forest stand was determined using a simple method on the basis of vertical wind speed profiles analysis.The mean ra value was 4.32 s m -1 in Fd plot, the maximum ra value was 5.93 s m-1 in May and minimum 3.04 s m-1 in October. In Fs plot the mean value of ra was 4.51 s m-1 and the ra values were in interval of values (3.65, 5.60) s m-1. (en)
Title
  • Aerodynamický odpor lesního porostu ve vztahu k délce drsnosti a toku vzduchu (cs)
  • Aerodynamic resistance of spruce forest stand in relation to roughness length and airflow
  • Aerodynamic resistance of spruce forest stand in relation to roughness length and airflow (en)
skos:prefLabel
  • Aerodynamický odpor lesního porostu ve vztahu k délce drsnosti a toku vzduchu (cs)
  • Aerodynamic resistance of spruce forest stand in relation to roughness length and airflow
  • Aerodynamic resistance of spruce forest stand in relation to roughness length and airflow (en)
skos:notation
  • RIV/67179843:_____/03:00027265!RIV06-GA0-67179843
http://linked.open.../vavai/riv/strany
  • 147;160
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA526/03/1104)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 597577
http://linked.open...ai/riv/idVysledku
  • RIV/67179843:_____/03:00027265
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • aerodynamic resistance; spruce forest stand; roughness length (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • SK - Slovenská republika
http://linked.open...ontrolniKodProRIV
  • [A4A17CB9AF72]
http://linked.open...i/riv/nazevZdroje
  • Contributions to Geophysics & Geodesy
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 33
http://linked.open...iv/tvurceVysledku
  • Janouš, Dalibor
  • Rožnovský, J.
  • Matějka, F.
  • Hurtalová, T.
issn
  • 1335-2806
number of pages
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