Direct measurements of turbulent fluxes in the near-surface environment at high latitudes applying the eddy-covariance method

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Accurate quantification of turbulent fluxes between the surface and the atmospheric boundary layer in polar environments and under stable stratification is a fundamental problem in ocean-atmosphere-ice interaction studies and numeric modelling. The proper representation of the turbulent fluxes requires adequate simulation of the atmospheric boundary layer. To address these problems, it is essential to improve the atmospheric databases with high-quality in-situ measurements of turbulent fluxes near the surface applying the eddy-covariance method. These data obtained from direct measurements (CSAT3 sonic anemometer, KH20 krypton hygrometer) will allow the validation of simulated results from simple flux gradient-methods used to force atmosphere-ocean-ice models. In this project results form the Eddy-Covariance method are used to validate commonly used sensible and latent heat flux parameterisations and to improve existing parameterisation schemes in Arctic regional atmospheric climate models such as HIRHAM and HIRLAM-6.