Direct measurements of CO2 flux in the Greenland Sea

• Main Authors: Lauvset, Siv K., McGillis, Wade R., Bariteau, Ludovic, Fairall, C. W., Johannessen, Truls, Olsen, Are, Zappa, Christopher J.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2011
• Subjects: Oceanography; Greenland; Greenland Sea
• Online Access: https://doi.org/10.7916/D8J10CPV

During summer 2006 eddy correlation CO2 fluxes were measured in the Greenland Sea using a novel system set-up with two shrouded LICOR-7500 detectors. One detector was used exclusively to determine, and allow the removal of, the bias on CO2 fluxes due to sensor motion. A recently published correction method for the CO2-H2O cross-correlation was applied to the data set. We show that even with shrouded sensors the data require significant correction due to this cross-correlation. This correction adjusts the average CO2 flux by an order of magnitude from -6.7 x 10⁻² mol m⁻² day⁻¹ to -0.61 x 10⁻² mol m⁻² day⁻¹, making the corrected fluxes comparable to those calculated using established parameterizations for transfer velocity.