Turbulent fluxes of momentum, sensible heat, latent heat and CO{sub}2 were measured at a sea observation tower by means of the eddy correlation method. Environmental factors controlling the air-sea flux of CO{sub}2 were investigated on the basis of the measurements. On the ocean surface, the change in the air density becomes so relatively large that corrections concerning sensible and latent heat fluxes, i.e., the Webb corrections, should be made for evaluating the flux of CO{sub}2. The present data show the corrections are very important to estimate accurately the total CO{sub}2 flux across the air-sea interface. Based on directional wave spectra, we classified swell conditions into three groups, i.e., Pure windsea, Swell-dominated sea and Cross swell. The transfer velocity of CO{sub}2 for Pure windsea increases monotonously with the wind speed, while the presence of swell contaminates the wind-speed dependence of the transfer velocity.
展开▼
