Articles | Volume 14, issue 11
https://doi.org/10.5194/amt-14-7291-2021
https://doi.org/10.5194/amt-14-7291-2021
Research article
 | 
19 Nov 2021
Research article |  | 19 Nov 2021

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

Katharina Jentzsch, Julia Boike, and Thomas Foken

Data sets

FLUXNET database Julia Boike http://www. europe-fluxdata.eu

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Short summary
Very small CO2 fluxes are measured at night in Arctic regions. If the sensible heat flux is not close to zero under these conditions, the WPL correction will take values on the order of the flux. A special quality control is proposed for these cases.