Articles | Volume 29, issue 1
Research article
24 Mar 2022
Research article |  | 24 Mar 2022

Characteristics of intrinsic non-stationarity and its effect on eddy-covariance measurements of CO2 fluxes

Lei Liu, Yu Shi, and Fei Hu

Data sets

Turbulent fluxes of carbon dioxide in the urban boundary layer Lei Liu

Detrended fluctuation analysis (DFA) M. Magris

Short summary
We find a new kind of non-stationarity. This new kind of non-stationarity is caused by the intrinsic randomness. Results show that the new kind of non-stationarity is widespread in small-scale variations of CO2 turbulent fluxes. This finding reminds us that we need to handle the short-term averaged turbulent fluxes carefully, and we also need to re-screen the existing non-stationarity diagnosis methods because they could make a wrong diagnosis due to this new kind of non-stationarity.