General Weather Terms

/General Weather Terms

Cap

A layer of relatively warm air aloft, usually several thousand feet above the ground, which suppresses or delays the development of thunderstorms. Air parcels rising into this layer become cooler than the surrounding air, which inhibits their ability to rise further and produce thunderstorms. Sometimes called the lid.

Climate

The generally prevailing weather conditions of a region over a period of years.   Some elements of climate include average high temperatures for a particular day or normal precipitation for a month or season.

By | January 15th, 2016||0 Comments

Convection

The transport of heat and moisture by the movement of a fluid; In meteorology, the term is used specifically to describe vertical transport of heat and moisture in the atmosphere, especially by updrafts and downdrafts in an unstable atmosphere.  Cumulonimbus, towering cumulus clouds and alto-cumulus castellanus clouds are all visible forms of convection. Convection is [...]

By | January 15th, 2016|, |0 Comments

Convergence

Tending to move toward one point or to approach each other. Convergence in a horizontal wind field indicates that more air is entering a given area than is leaving at that level.  Convergence at low levels may result in upward forcing; at higher levels convergence may result in downward forcing.  When other factors such as [...]

By | January 27th, 2016|, |0 Comments