Figure 6: Composite representation of the surface layer meteorological conditions in Ny-Ålesund as observed between 1974 and 2011: (a) during the entire period; (b) during the all May months. (c) The same type of composite representation but for the AWS 3 data during the intensive observation period between May 2nd and 13th 2009. Colors show the mean temperature [°C] at 2 m under the given wind direction and the wind speed. The contours show 0.25, 0.5, 0.75, and 0.9 relative probability levels to observe the given combination of the wind speed and direction and the wind speed. Detailed description of the procedure is given in the text.