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标题：Turbulent Sensible Heat Flux in Łódź Obtained from Scintillometer Measuerments – Comparison of Free and Mix Algorithms
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作者：Mariusz Zieliński ; Krzysztof Fortuniak ; Włodzimierz Pawlak 等
期刊名称：Contemporary Trends in Geoscience
电子版ISSN：2299-8179
出版年度：2012
卷号：1
期号：1
页码：109
DOI：10.2478/ctg-2012-0017
出版社：De Gruyter Open
摘要：The primary aim of this paper was to present the results of turbulent sensible heat flux (QH) measurements withScintillometer Scintec BLS900 (LAS). The theoretical background of scintillation method has been presented as well as twodifferent ways of sensible heat flux computation from LAS. The measurements presented here were conducted from April toDecember 2011. Diurnal and partially annual variability of QH has been analyzed, moreover the mean diurnal course of QHin considered months has been prepared. In order to choose the optimal method of QH computation from LAS the resultsobtained with three different Monin-Obuchov similarity theory functions as well as free convection assumption has beencompared. In first case it has been proved that sensible heat flux differs significantly depending on chosen universal function.In turn in case of free convection assumptions it has been revealed that it is valid only for very unstable conditions.Therefore it does not apply to long-time heat flux measurement in case of Łódź. Nevertheless, this study has shown that scintillationmethod is valuable and reasonable source of path-averaged QH estimates in considered city.
关键词：sensible heat flux; turbulence; scintillometer; urban climate