Which jet stream affects weather in south africa

The Gulf Stream is the result of ocean convection and is driven by differences in water density that, in this case, depend on water salinity and temperature. Surface water around the Gulf of Mexico flows towards the North Atlantic.

Evaporation causes it to cool and become saltier until it is dense enough to sink, somewhere north of Iceland. When this water reaches the ocean floor it heads south.

This flow pulls more warm surface water northwards from the Caribbean. The price Ireland and the UK pay is a wetter climate: all that evaporated water has to go somewhere.

Convection currents also occur in the atmosphere, forming the Hadley cell, the Ferrel cell and the Polar cell. Air warmed in the tropics rises and, in the northern hemisphere, heads northwards.

This air cools with increasing altitude and latitude, becoming more dense and sinking in the mid-latitudes. This is the Hadley cell. The world-wide jet stream that occurs in winter above the troposphere resulting from a very steep st The sub-tropical jet stream is evident throughout the year bu A bent tube is lowered into the stream as shown in the figure below.

The velocity of the stream rela A bent tube is lowered into a stream of water as shown in the figure. The velocity of the stream is Which of the following is not correctly matched? Oyashivo watershed- 2. Vanguella Stream - Easter The northern midlatitude jet stream is the right answer. Other questions on the subject: Geography. Geography, Which is a result of increasing acidity of seawater a. Triangle with the the sides 72 and 75 and x. Which of the following testing methods focuses on how well a program works?

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This movement creates an air current, or wind. A jet stream is a type of air current that forms high in the atmosphere. The Sun heats Earth unevenly, creating masses of colder air near the poles and warmer air near the equator. On average, jet streams move at about miles per hour. But dramatic temperature differences between the warm and cool air masses can cause jet streams to move at much higher speeds — miles per hour or faster.

Speeds this high usually happen in polar jet streams in the winter time.