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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F13%3A00423993%21RIV14-MSM-67179843
rdf:type
skos:Concept n18:Vysledek
dcterms:description
The Bowen ratio energy balance method (BREB) is based on the measurement of air temperature and humidity gradients in at least two vertical levels above the surface of interest. So far, there have been a limited number of studies dealing with the footprint of the BREB. Staying conservative, many authors used the upper sensor of the BREB as a single point to determine the footprint of the BREB. In fact, the footprint of the fl uxes rather should be explained as a source area of the single point measurement carried out somewhere between the two BREB levels. It was suggested that this single point lies close to the geometrical mean of the two aero dynamical heights. However, there has still been no consensus regarding if this apparent height is fi xed or not, and if the second is true, whether it is a function of the Bowen ratio itself. Th e submitted study deals with the footprint of the BREB using several BREB experiments above various covers with diff erent fetches. Moreover, by simulating diff erent Bowen ratios between the area of interest and the contaminating area we attempt to investigate for which conditions (dry or wet) and type of transition (from drier to wetter or vice versa) the method is more sensitive to the limited fetch. The Bowen ratio energy balance method (BREB) is based on the measurement of air temperature and humidity gradients in at least two vertical levels above the surface of interest. So far, there have been a limited number of studies dealing with the footprint of the BREB. Staying conservative, many authors used the upper sensor of the BREB as a single point to determine the footprint of the BREB. In fact, the footprint of the fl uxes rather should be explained as a source area of the single point measurement carried out somewhere between the two BREB levels. It was suggested that this single point lies close to the geometrical mean of the two aero dynamical heights. However, there has still been no consensus regarding if this apparent height is fi xed or not, and if the second is true, whether it is a function of the Bowen ratio itself. Th e submitted study deals with the footprint of the BREB using several BREB experiments above various covers with diff erent fetches. Moreover, by simulating diff erent Bowen ratios between the area of interest and the contaminating area we attempt to investigate for which conditions (dry or wet) and type of transition (from drier to wetter or vice versa) the method is more sensitive to the limited fetch.
dcterms:title
Determination of errors in energy flux estimates using the bowen ratio energy balance method Determination of errors in energy flux estimates using the bowen ratio energy balance method
skos:prefLabel
Determination of errors in energy flux estimates using the bowen ratio energy balance method Determination of errors in energy flux estimates using the bowen ratio energy balance method
skos:notation
RIV/67179843:_____/13:00423993!RIV14-MSM-67179843
n18:predkladatel
n19:ico%3A67179843
n3:aktivita
n7:P n7:I
n3:aktivity
I, P(EE2.3.20.0248), P(EE2.4.31.0056), P(LH12037)
n3:dodaniDat
n4:2014
n3:domaciTvurceVysledku
n11:5539498 n11:8957924 n11:4394372
n3:druhVysledku
n17:D
n3:duvernostUdaju
n21:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
68872
n3:idVysledku
RIV/67179843:_____/13:00423993
n3:jazykVysledku
n15:eng
n3:klicovaSlova
Bowen ratio energy balance method; footprint; limited fetch; energy fluxes; poplar plantation; grassland
n3:klicoveSlovo
n6:footprint n6:grassland n6:Bowen%20ratio%20energy%20balance%20method n6:poplar%20plantation n6:energy%20fluxes n6:limited%20fetch
n3:kontrolniKodProRIV
[92191680FA1B]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Brno
n3:nazevZdroje
Global Change and Resilience: From Impacts to Responses : Proceedings of the 3rd annual Global Change and Resilience Conference
n3:obor
n14:DG
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n16:LH12037 n16:EE2.4.31.0056 n16:EE2.3.20.0248
n3:rokUplatneniVysledku
n4:2013
n3:tvurceVysledku
Fischer, Milan Žalud, Zdeněk Trnka, Miroslav Pozníková, G.
n3:typAkce
n9:EUR
n3:zahajeniAkce
2013-05-22+02:00
s:numberOfPages
4
n12:hasPublisher
Global change research centre, Academy of Sciences of the Czech Republic, v. v. i
n8:isbn
978-80-904351-8-6