This report presents results from a field trial of ship-based air-sea flux measurements of carbon monoxide (CO) by direct eddy correlation with an infrared-laser trace gas analyzer. The analyzer utilizes Off-Axis Integrated-Cavity-Output Spectroscopy (OA-ICOS) to achieve high selectivity for CO, rapid response (∼2 Hz) and low noise. Over a two-day sea trial, peak daytime seawater CO concentrations were ∼1.5 nM and wind speeds were consistently 10-12 m s-1. A clear diel cycle in CO flux with an early afternoon maximum was observed. An analysis of flux error suggests the effects of non-stationarity are important, and air-sea CO flux measurements are best performed in regions remote from continental pollution sources. © 2012 Author(s).
CITATION STYLE
Blomquist, B. W., Fairall, C. W., Huebert, B. J., & Wilson, S. T. (2012). Direct measurement of the oceanic carbon monoxide flux by eddy correlation. Atmospheric Measurement Techniques, 5(12), 3069–3075. https://doi.org/10.5194/amt-5-3069-2012
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