Methane (CH4) is a trace gas because it exists in very small concentrations (about 1.9 parts per million). However, it is a potent greenhouse gas, roughly 25 to 30 times more effective at trapping heat than carbon dioxide over a ...
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The Ferrel Cell is the mid-latitude atmospheric circulation cell located between the Hadley and Polar cells. Within this cell, surface air moves poleward, specifically from the subtropical high-pressure zone (30°) toward the subpolar low-pressure zone (60°). Because of the Coriolis ...
Albedo is a measure of reflectivity, expressed on a scale from 0 to 1. A perfectly black body has an albedo of 0 because it absorbs all incoming radiation and reflects nothing. In contrast, a perfect white surface (like fresh ...
Anemometers are instruments designed to measure wind speed and, in some designs, wind direction. The most common type is the “cup anemometer,” which features three or four cups that rotate when the wind blows. The speed of the rotation is ...
A 22-degree halo is a ring of light that forms around the Sun or Moon when its light is refracted through hexagonal ice crystals found in high-altitude cirrus clouds. These crystals act like tiny prisms, bending the light at a ...