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Copenhagen. Coloured radar satellite image of the Danish capital Copenhagen (white, lower right). North is towards the top. This image was made by combining three frames taken on different dates. Differences between the frames show as areas of colour. Agricultural land appears in various colours, reflecting growth of different types of crop between frames. Copenhagen is split between the islands of Zealand (main landmass) and Amager (small island, lower right). Part of Sweden is visible in the top right. The colours on the sea indicate changes in wave pattern and height. Image produced by European Radar Satellite 1. The area shown is approximately 100km x 100km. (KEYSTONE/SCIENCE PHOTO LIBRARY/ESA, EURIMAGE)