Photochemical smog. View across the city of Buenos Aires,Argentina,showing a brown layer of photochemical smog. This is a layer of polluted air trapped close to the ground. Pollutants such as nitrogen oxides and hydrocarbons are mixed in the layer,and degraded by ultraviolet light from the Sun. The resultant air is noxious and can lead to severe respiratory problems. The main cause of such smog in cities is traffic | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Tompkinson, Geoff |
Bildgröße: | 4931 px × 3316 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |