An atmospheric condition in which air temperature increases with increasing height. It occurs when warmer air overlies cooler air. Ordinarily, air temperature decreases with increasing height. In atmospheric electricity, the process by which neutral atmospheric molecules or other particles suspended in the air are rendered electrically charged. Isobars form closed loops, and cannot branch or end.
Isobaric patterns identify areas of relative high and low air pressure.
On a weather map, a line drawn through all points of equal dew point temperatures. The word was introduced and first used in 1817 by German naturalist Alexander Baron von Humboldt.