Water vapor, clouds, and carbon dioxide are the main atmospheric components in the exchange of terrestrial radiation in the troposphere, serving as a regulator of planetary temperatures via the greenhouse effect. Water vapor feedback. A process in which an increase in the amount of water vapor increases the atmosphere's absorption of longwave radiation, thereby contributing to a warming of the atmosphere. Warming, in turn, may result in increased evaporation and an increase in the initial water vapor anomaly. A common unit used in measuring power.
Power is defined as the flow of energy over time.
West Antarctic Ice Sheet. See ice sheet Wetlands. For more information, contact Global Change.