Wind characteristics of CzeCOS’s ecosystem station Bílý Kříž

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F17%3A00485381" target="_blank" >RIV/86652079:_____/17:00485381 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Wind characteristics of CzeCOS’s ecosystem station Bílý Kříž

Original language description

Eddy-covariance is a direct and accurate method to measure exchanges of greenhousengases and energy between ecosystems and the atmosphere under good turbulent mixingnconditions. Calm conditions can affect the accuracy of the eddy-covariance measurementsnby potential gas buildup below the measurement height. This study characterizes windnpatterns and calm periods at Bílý Kříž Ecosystem Research Station, using four-year (2010-n2013) wind data measured on an eddy-covariance tower at the site, located in BeskidsnMountains, Czech Republic. The site is covered by young, dense Norway spruce forestnon a 12.5o slope facing South. The results show that the prevailing wind direction wasnfrom S to SW direction (55 % frequency of occurrence), and to a much lesser extent fromnN, NE and NW but including the strongest winds above 12 m s-1, possibly during galenor storm events. Calm condition (u < 1 m s-1) accounted for 34 % of year time. Summernand Spring were the calmest seasons. Occurrence frequencies of calm conditions for thensix-month periods from May to October (plant growing season) were higher than thosenfor the remaining parts of the year (on average 39 % vs 28 % respectively). One should benaware of the calm periods in May-October when processing eddy-covariance data, sincenit is the time period of most contribution of forest ecosystem as a sink of CO2.

Czech name

—

Czech description

—

Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/LO1415" target="_blank" >LO1415: CzechGlobe 2020 – Development of the Centre of Global Climate Change Impacts Studies</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Beskydy

ISSN

1803-2451

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

1-2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

33-40

UT code for WoS article

—

EID of the result in the Scopus database

—