Marine Layer over Lisbon

December 09, 2020


Photographer: Nuno Lopes
Summary Authors: Nuno Lopes

This photo, captured just after sunset, shows a marine layer creeping over the Tagus River along the Atlantic coast of Portugal, from Barreiro City to Lisbon. A marine layer often forms when there’s considerable temperature contrast between the sea and lower atmosphere. In late summer, the water temperature off the coast of Portugal is cooler than the air above it. When westerly winds move cooler air ashore, a fog layer may develop, typically no more than a few hundred feet in thickness. Photo taken on September 15, 2020.

Photo Details: Camera: Canon EOS 550D; Software: Adobe Photoshop Lightroom 5.7.1 (Windows); Exposure Time: 0.0025s (1/400); Aperture: ƒ/2.0; ISO equivalent: 800; Focal Length: 50.0mm