| Summary: | Because of complications associated with ship motion and airflow distortion, eddy covariance (EC) from ships has not seen widespread application. In 2011, high frequency (10 Hz) measurements of three-dimensional wind velocity, temperature, CO2 and humidity and slow response sensors recording air temperature, humidity, wind speed/direction, surface temperature were deployed on a tower installed on the foredeck of the research ice breaker CCGS Amundsen to characterize the surface fluxes within the Canadian Arctic Archipelago. The ensemble averaged co-spectra for wind, temperature and CO2 showed general agreements evaluated against theoretical curves (Kaimal et al. 1972). Port- and starboard-side co-spectra appear to follow the theoretical curves while an over-estimation was seen at high frequencies for winds coming over the bow. Fluxes were also compared against modern parameterizations for CO¬2, heat and momentum exchange for open water environments. The range of EC momentum and sensible fluxes looks reasonable while CO2 flux exhibits uncertainties. October 2016
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