Secondary intra-tropical convergence

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The secondary intra-tropical convergence ( also secondary ITC ) is a climatic phenomenon in the area of ​​the equator .

In the tropics , irradiation is intense all year round. The midday angle of incidence of the sun's rays varies between 43 ° and 90 °, the day length between 10.5 and 13.5 hours.

The surface of the earth is consequently strongly heated and with it the overlying air. Nevertheless, the heated air masses do not rise sharply everywhere , as the Passatin version prevents this in many places. However, according to their formation, no Passatin version can develop at the equator, the longest parallel on earth. This is why convection with cloud formation and rain occurs all year round . This phenomenon is known as the Secondary Intra-Tropical Convergence Zone (ITC) when the primary ITC shifts north from March to September and south from September to March. At the end of March and the end of September both coincide.

See also

swell

  • Diercke World Atlas . Westermann, Braunschweig 1996, ISBN 3-14-100600-8 , maps 1 and 2, p. 128.
  • Nathalie de Noblet et al .: Sensitivity of simulated Asian and African summer monsoons to orbitally induced variations in insolation 126, 115 and 6 kBP . In: Climate Dynamics . Volume 12, Number 9, July 1996, pp. 589-603. Springer, Berlin / Heidelberg, ISSN  0930-7575 .

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