Sea breeze

Under a land - sea breeze system refers to both a coupled climate system from land and water surfaces over which results in the formation of sea and land winds, as well as the circulation system generated by these winds itself is the cause of the formation of the respective wind thermal in nature and is based on two to three times as rapid heating and cooling of the air over a land surface in comparison to a water surface.

Onshore wind ( sea breeze )

A land surface heats up much faster than an expanse of water, since water has a higher specific heat capacity c. Therefore, in case of strong sunlight, it depends on the country to convection phenomena and the associated convergence on the ground. This is a compensatory flow of air masses caused by the emerging air pressure difference on the order of 2 hPa between the bottom thermal low over the land surface and the ground high above the water surface.

• Sea wind: air mass flow from water to land, since this (c = 0.73 kJ / kg * K tiles ) and asphalt heats up during the day faster due to the relatively low c- value of, for example, soil, concrete, houses,. Contrast, water heats / cools due to the higher c- value of 4.18 kJ / kg * K much slower up / down. Therefore, during the day rise to the air masses over land and there is a compensatory movement by air masses from the water MOVED ( = sea breezes ).

Ablandiger Wind ( Wind Country )

The water keeps the heat longer days than the land area over which the soil and air temperature usually drops significantly already in the afternoon.

• Landwind: air mass flow from the country or to the lake. Reason: In the evening, even more at night, this circulation turns around; Land cools much faster than the / of the lake, due to much lower c values ​​of the substances mentioned, (tile, c = about 0.73 kJ / kg * K). That much lower specific heat capacity than water ( 4.18 kJ / kg * K). Now the water is relatively warmer; now rises above the / on the lake the air and relatively colder air mass flow from the land away to / from the lake.

Aspects of water sports

The various partially and temporally varying wind directions are for multiple forms of water sports of great charm, but can also bring dangers if the return on land is difficult.

For sailing a starchy and directionally constant wind is most popular as a frequent change. The geographical location of some stretches of coastline makes them ideal for this. Resistant winch - which can occur not only in "fair weather " - facilitate the planning of trips and cruising against the wind. By local, seasonally changing wind systems (see above) is added an additional stimulus, but can in the afternoon offshore winds often make it difficult to return. Some sailors, therefore, like to sleep on offshore islands and drive back until the next morning - usually under easier circumstances - to.

For windsurfers and surfers in particular, but also for kitesurfers, the characteristics of a coastal section ( surf spot ) is particularly important and interesting. Relative to the beach line, they differ for the direction of the wind between onshore ( onshore ), offshore ( offshore ) and side shore (side wind). Many windsurfing areas are particularly popular due to stable wind conditions of one or another type, such as parts of Scandinavia or the west bank of the settlers and the northern shore of Lake Garda for offshore winds ( at south wind rather sideshore ), or the Camargue and large parts of the Baltic Sea for onshore conditions. Not least because Kiel was the "capital " of windsurfing.