On-board Automated Eddy Flux Measurement System over Open Ocean

Abstract

On-board direct eddy flux measurement is essential in the quantitative air-sea flux evaluation as sea truth flux. Present authors have developed a new real-time automated eddy flux system and it is operating as a routine measurement on R/V MIRAI, JAMSTEC. As compared to our previous system, ship motion correction scheme is simplified and real-time eddy flux data processing system is introduced as the automated system. As a continuously operating real time eddy flux ship in the world, this is a unique system. The quality control of the flux datasets is essential as the data is collected continuously including during unfavorable conditions. Preliminary quality control was applied and the results show the reasonable values as compared to the bulk parameters. Based on the detailed quality control, the bulk transfer coefficients can be parameterized in various conditions.