LONG-TERM GOALS We investigate air-sea transfer of momentum, heat, and moisture under weak wind conditions. We focus on effects of swell on turbulence transfer since unlike wind sea, swell generation is independent of local wind and its phase speed can be much faster than local weak wind. Improved understanding of wave effects on marine atmospheric turbulent fluxes, especially under weak wind conditions, can lead to better understanding of air-sea interactions, which in turn leads to better bulk aerodynamic formula for numerical models.