Radar image of Lisbon

This Envisat's Advanced Synthetic Aperture Radar (ASAR) image shows Lisbon and the surrounding area. The city, capital of Portugal, is visible as a large bright area and is situated on the mouth of the Tagus River, which flows from the top centre of the image. The image is a multitemporal colour composite and is made of three ASAR images acquired on different dates and assigning a colour (RGB) to each date (Red : 26 October 2003, Green : 17 August 2003, Blue : 4 May 2003).