Articles | Volume 12, issue 2
Atmos. Meas. Tech., 12, 971–976, 2019
https://doi.org/10.5194/amt-12-971-2019
Atmos. Meas. Tech., 12, 971–976, 2019
https://doi.org/10.5194/amt-12-971-2019

Research article 13 Feb 2019

Research article | 13 Feb 2019

Possible errors in flux measurements due to limited digitalization

Thomas Foken et al.

Data sets

Energy and Matter Fluxes of a Spruce Forest Ecosystem, Ecological Studies T. Foken https://doi.org/10.1007/978-3-319-49389-3

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Short summary
Recently reported trends of carbon dioxide uptake pose the question of whether trends may be the result of the limited digitalization of gas analysers and sonic anemometers used in the 1990s. Modifying a 12 bit digitalization and the instrument error reported for the R2 and R3 sonic anemometers found elsewhere, the influence of these deficits in comparison to the now commonly used 16 bit digitalization were quantified. Both issues have an effect only on trace gas fluxes of small magnitude.