Measuring turbulent CO2 fluxes with a closed-path gas analyzer in a marine environment

摘要

In this study, we introduce new observations of sea-air fluxes of carbon dioxide using the eddy covariance method. The measurements took place at the Uto Atmospheric and Marine Research Station on the island of Uto in the Baltic Sea in July-October 2017. The flux measurement system is based on a closed-path infrared gas analyzer (LI-7000, LI-COR) requiring only occasional maintenance, making the station capable of continuous monitoring. However, such infrared gas analyzers are prone to significant water vapor interference in a marine environment, where CO2 fluxes are small.