| mots-clés : Anticyclone Mobile Polaire – Agglutination Anticyclonique – Ligne de Pulsation – Alizé/Mousson Panaméenne – Equateur Météorologique – Nortes – Temporales – Cordonazos – Cyclones tropicaux – Classification génétique du temps et du climat – Evolution climatique récente – Amérique Centrale. |
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| The dynamic of weather and climate in Central America |
| The Central American isthmus is characterised by a lowering of the relief which supports the aerological communication between the Atlantic and the Pacific. Because of their power and drain exerted by the relief, the Moving Polar Highs (MPHs) penetrate deeply in the tropical zone. The displacement of the MPHs and their progressive deceleration in direction of the Tropics, the meeting of the continents and their relieves and the effects on the mass flow form Anticyclonics Agglutinations. The MPHs get agglutinated and the Lines of Pulsation become gradually the trade winds and/or monsoon circulation. Tropical flows of the two weather hemispheres meet along the Meteorological Equator. The Central American isthmus constitutes a single climatic crossroads in the world. The study of the disturbances gives the key of dynamic analysis of weather and climate in Central America. Recent climatic evolution shows a modification of the style of general circulation since the Seventies. |
| mots-clés en anglais : Mobile Polar High (MPH) – Anticyclonic Agglutination (AA) – Pulse Line (PL) – Trade/Panamanian Monsoon – Meteorological Equator (ME) – Vertical Meteorological Equator (VME) – Inclined Meteorological Equator (IME) – Nortes/Northers – Temporales – Cordonazos |
