Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO2 fluxes

The WPL (Webb, Pearman, and Leuning) correction is fully accepted to correct trace gas fluxes like CO2 for density fluctuations due to water vapour and temperature fluctuations for open-path gas analysers. It i...

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Autores principales:	K. Jentzsch, J. Boike, T. Foken
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Environmental engineering TA170-171 Earthwork. Foundations TA715-787
Acceso en línea:	https://doaj.org/article/86b0c568e7244de090aab8a4e3bb3c86
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spelling	oai:doaj.org-article:86b0c568e7244de090aab8a4e3bb3c862021-11-19T12:50:08ZImportance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes10.5194/amt-14-7291-20211867-13811867-8548https://doaj.org/article/86b0c568e7244de090aab8a4e3bb3c862021-11-01T00:00:00Zhttps://amt.copernicus.org/articles/14/7291/2021/amt-14-7291-2021.pdfhttps://doaj.org/toc/1867-1381https://doaj.org/toc/1867-8548<p>The WPL (Webb, Pearman, and Leuning) correction is fully accepted to correct trace gas fluxes like CO<span class="inline-formula"><sub>2</sub></span> for density fluctuations due to water vapour and temperature fluctuations for open-path gas analysers. It is known that this additive correction can be on the order of magnitude of the actual flux. However, this is hardly ever included in the analysis of data quality. An example from the Arctic shows the problems, because the size of the correction is a multiple of the actual flux. As a general result, we examined and tabulated the magnitude of the WPL correction for carbon dioxide flux as a function of sensible and latent heat flux. Furthermore, we propose a parameter to better estimate possible deficits in data quality and recommend integrating the quality flag derived with this parameter into the general study of small carbon dioxide fluxes.</p>K. JentzschJ. BoikeJ. BoikeT. FokenCopernicus PublicationsarticleEnvironmental engineeringTA170-171Earthwork. FoundationsTA715-787ENAtmospheric Measurement Techniques, Vol 14, Pp 7291-7296 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental engineering TA170-171 Earthwork. Foundations TA715-787
spellingShingle	Environmental engineering TA170-171 Earthwork. Foundations TA715-787 K. Jentzsch J. Boike J. Boike T. Foken Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes
description	<p>The WPL (Webb, Pearman, and Leuning) correction is fully accepted to correct trace gas fluxes like CO<span class="inline-formula"><sub>2</sub></span> for density fluctuations due to water vapour and temperature fluctuations for open-path gas analysers. It is known that this additive correction can be on the order of magnitude of the actual flux. However, this is hardly ever included in the analysis of data quality. An example from the Arctic shows the problems, because the size of the correction is a multiple of the actual flux. As a general result, we examined and tabulated the magnitude of the WPL correction for carbon dioxide flux as a function of sensible and latent heat flux. Furthermore, we propose a parameter to better estimate possible deficits in data quality and recommend integrating the quality flag derived with this parameter into the general study of small carbon dioxide fluxes.</p>
format	article
author	K. Jentzsch J. Boike J. Boike T. Foken
author_facet	K. Jentzsch J. Boike J. Boike T. Foken
author_sort	K. Jentzsch
title	Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes
title_short	Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes
title_full	Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes
title_fullStr	Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes
title_full_unstemmed	Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes
title_sort	importance of the webb, pearman, and leuning (wpl) correction for the measurement of small co<sub>2</sub> fluxes
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/86b0c568e7244de090aab8a4e3bb3c86
work_keys_str_mv	AT kjentzsch importanceofthewebbpearmanandleuningwplcorrectionforthemeasurementofsmallcosub2subfluxes AT jboike importanceofthewebbpearmanandleuningwplcorrectionforthemeasurementofsmallcosub2subfluxes AT jboike importanceofthewebbpearmanandleuningwplcorrectionforthemeasurementofsmallcosub2subfluxes AT tfoken importanceofthewebbpearmanandleuningwplcorrectionforthemeasurementofsmallcosub2subfluxes
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Importance of the Webb, Pearman, and Leuning (WPL) correction for the measurement of small CO<sub>2</sub> fluxes

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