This image, acquired by Envisat’s Advanced Synthetic Aperture Radar (ASAR) instrument on 30 September 2009, shows Denmark and the wind fields over the North Sea. The wind fields are derived from radar
observations, the speed values range from 0 to 20 m/s which is represented by the the size and color of the
arrows. Studies using wind field observations during longer periods provide insight in the area’s clean energy
potential. False colouring has been applied to sea and land to an original black and white radar image.