Fluctuations of horizontal and vertical wind speed components and of air temperature have been measured on a mast in the Baltic Sea. Preliminary results of computed stress and sensible heat flux and their parametrisation with wind speed and air-sea temperature difference are given. Compared with the results of other authors, the present data show the following features:
1. The drag coefficient increases strongly with increasing wind speed.
2. The heat transfer coefficient seems to be smaller under stable stratification than under neutral or unstable conditions
