High fog

Sea of ​​fog in winter on the Swabian Alb

Loose high fog over Lake Zurich , Switzerland

High fog over Vienna

Caspar David Friedrich : The wanderer over the sea of ​​fog

High fog is a common word for radiation fog that begins in the form of low-lying layer clouds ( stratus ) a few tens to 100 meters above the earth's surface and can reach a height of 1 or 2 km. It mostly arises in connection with inversions . Most often it forms in autumn , when the air cools down significantly at night with high humidity .

High fog is particularly common in basin locations and in some mountain valleys , for example in the Swiss Plateau , on the edge of the Vienna basin or in the Carinthian lake area . One kilometer higher, however, there is often sunshine or a starry sky at night . To mountain hikers - and to the residents of places above the fog - an evenly mist-filled valley or basin can appear like a sea. Such seas of fog or clouds are a popular motif for romantic painters and photographers.

In Switzerland in particular, people speak of a sea ​​of ​​fog over the Swiss Plateau , between the Jura and the Alps.

See also:

• High fog in Switzerland

supporting documents

1. ↑ Hochnebel - Lexicon of Geography. In: Spektrum.de. Retrieved February 4, 2016 . 
2. ↑ Temperature inversion levels high fog. In: Menschenswetter.de. Retrieved February 4, 2016 . 
3. ↑ limited preview in the Google book search