Characterization of air flow patterns at the Atmospheric Station Křešín u Pacova

0433516 - ÚVGZ 2015 FI C - Conference Paper (international conference)
Komínková, K. - Sedlák, Pavel - Dvorská, Alice - Prošek, P.
Characterization of air flow patterns at the Atmospheric Station Křešín u Pacova.
1st ICOS Science Conference on Greenhouse Gases and Biogeochemical Cycles, Book of Abstracts. Helsinky: University of Helsinky, 2014, s. 71.
[ICOS International Conference on Greenhouse Gases and Biogeochemical Cycles /1./. Brusels (BE), 23.09.2014-25.09.2014]
R&D Projects: GA MŠMT(CZ) ED1.1.00/02.0073; GA MŠMT(CZ) LM2010007
Keywords : air flow * atmospheric station Křešín
Subject RIV: DI - Air Pollution ; Quality

Atmospheric station (AS) Křešín u Pacova is situated in central Czech Republic and the main part consist of 250 m tall atmospheric mast where concentrations of greenhouse gases, selected air quality and meteorological parameters are measured at 5 altitudes. Because most of measurements at the AS started last year, as first step it is important to characterize air flow patterns in the vicinity of station in order to interpret the measured data correctly. For this purpose the data obtained from the ERA Interim reanalysis project (namely the wind direction and speed at the pressure levels of 925 hPa, which approximately corresponds to the tower height of 250 m, and 850 hPa, where the influence of surface friction is negligible), along with data measured at adjacent Observatory Košetice (wind speed and direction data at 10 m height) was used. The main objectives of this work was to select the years with typical flow patterns for the future characterization of the tall tower by a footprint analysis and identification of possible long-term changes in advection (i.e. shifts in prevailing wind directions). All obtained results are important for understanding which sources could contribute to the measured values due to the long-range transport.
Permanent Link: http://hdl.handle.net/11104/0237718