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Definition of Convergence zone

Convergence zone Definition from Government Dictionaries & Glossaries
DOD Dictionary of Military Terms
That region in the deep ocean where sound rays, refractured from the depths, return to the surface.
  
Source: U.S. Department of Defense, Joint Doctrine Division. ( About )
Convergence zone Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
A convergence zone in meteorology is a region in the atmosphere where two prevailing flows meet and interact, usually resulting in distinctive weather conditions. This create a mass accumulation that eventually leads to a vertical movement and the formation of clouds and precipitation. Large scale convergence, called synoptic scale convergence, provides weather systems such as baroclinic troughs, low-pressure areas, and cyclones . Small scale convergence will give from isolated cumulus clouds to large areas of thunderstorms. The inverse of the convergence is the divergence.

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