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# Long description

This figure shows two radar profiles, side by side. Each image is represents an area approximately 100km across, from left to right. The bottom of each image has white, mottled shading on a black background. The top of the mottled area, on both images, is a wavy line that extends across the centre of the image from left to right. Each image shows white arrows pointing upwards towards areas where the white shading is more concentrated.