Detection of low-frequency organized structures in night-time air flow within a spruce canopy on the upwind and downwind sides of a mountain ridge

0443509 - ÚFA 2016 RIV GB eng J - Journal Article
Potužníková, Kateřina - Sedlák, Pavel - Koucká Knížová, Petra
Detection of low-frequency organized structures in night-time air flow within a spruce canopy on the upwind and downwind sides of a mountain ridge.
Atmospheric Science Letters. Roč. 16, č. 4 (2015), s. 432-437. ISSN 1530-261X. E-ISSN 1530-261X
R&D Projects: GA ČR(CZ) GP205/05/P564; GA ČR(CZ) GA15-24688S; GA AV ČR(CZ) IAA300420803
Institutional support: RVO:68378289
Keywords : nocturnal boundary layer * turbulence * organized structures * complex terrain * forest canopy * wavelet transform
Subject RIV: DG - Athmosphere Sciences, Meteorology
Impact factor: 1.570, year: 2015
http://onlinelibrary.wiley.com/doi/10.1002/asl.578/epdf

In this paper, a wavelet-based methodology is proposed to study the main features of turbulence data collected within the crown layer of an even-aged Norway spruce forest at the Bílý Kříž site. The site is situated on a steep (25%) south-southwest-facing slope near the top of a mountain ridge. The periods of organized structures detected when the site is on the downwind (leeward) side of the ridge are significantly shorter than those detected when the site is on the upwind side of the ridge. However, the ‘leeward’ structures have a relatively higher persistence and frequency of occurrence in the 30-min time series.
Permanent Link: http://hdl.handle.net/11104/0246211