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  Report - AS2.02 Air-sea interaction

The session was presented by 8 oral and 18 poster (with two cancellations) papers, with the overall ratio 30% : 70%. The session considered all aspects of air-sea interaction: physics of fluxes (momentum, energy, heat, spray, moisture and gases) and processes (wind, waves, currents, slicks, rain, etc.) responsible for these fluxes at the air-sea interface, above and below; determination of fluxes from surface, aircraft and satellite; modelling studies at all scales. The emphasis was given to the air-sea interaction at extreme wind speeds. This problem was considered in three theoretical papers all underlining the role off sea spray in levelling off of the sea drag when the wind speed increases to hurricane values of about 30 m/s and decrease of the sea drag with a further increase in the wind speed. An experimental paper on measurements of the heat fluxes in hurricanes was presented as well. There were also papers on heat fluxes one using ocean heat storage and another using a novel analysis method to improve global estimates of these fluxes. Traditionally few aspects of wind-wave interaction were discussed. Observations of the momentum, heat and moisture fluxes on different scales were reported. Modelling of micro-, meso- and global scale air-sea interaction phenomena was broadly covered by the session.

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