The lower atmosphere, known as the troposphere, is warmed by heat from Earth's surface. This warming is due to the absorption of outgoing radiation by greenhouse gases such as carbon dioxide and water vapor, which trap heat in the atmosphere.
When air is warmed, it expands and becomes less dense, causing it to rise. As it rises, it creates lower pressure at the surface. This is because there are fewer air molecules pressing down on a given area as the warmed air moves away.
The troposphere is the layer of Earth's atmosphere where air is most likely warmed by conduction. This is the lowest layer of the atmosphere where weather events occur, and conduction is the main mechanism through which heat is transferred near the Earth's surface.
The surface of the Earth is more effectively warmed by radiation heat transfer than by conduction or convection. This is because radiation from the sun can penetrate the atmosphere and reach the Earth's surface, where it is absorbed and converted into heat. Conduction and convection play a role in redistributing this heat throughout the atmosphere.
No, typically the upper atmosphere is colder than the lower atmosphere. This is because the lower regions of the atmosphere are heated by the Earth's surface, while the upper atmosphere is heated by solar radiation. This temperature difference contributes to the formation of weather patterns and circulation in the atmosphere.
The lower atmosphere is directly warmed by the sun's radiation that passes through the Earth's atmosphere and heats the surface of the Earth. This heat is then transferred to the lower atmosphere through conduction, convection, and latent heat release from processes like evaporation.
The lower atmosphere, known as the troposphere, is warmed by heat from Earth's surface. This warming is due to the absorption of outgoing radiation by greenhouse gases such as carbon dioxide and water vapor, which trap heat in the atmosphere.
A small part of the heating of the atmosphere is directly from the sun. A lot of heating near the surface is done through conduction from land or water that has been warmed by the sun.
When air is warmed, it expands and becomes less dense, causing it to rise. As it rises, it creates lower pressure at the surface. This is because there are fewer air molecules pressing down on a given area as the warmed air moves away.
Air pressure tends to increase as air gets lower in the atmosphere simply because the lower the air is, the more air there is on top of it, and that's what causes air pressure, the weight of the air. And when air is under more pressure, it naturally gets compressed. Air also tends to be warmed by proximity to the ground because it is the ground that is warmed by sunlight. Sunlight does not warm air directly since air is transparent (at least in the visible wavelengths).
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The troposphere is the layer of Earth's atmosphere where air is most likely warmed by conduction. This is the lowest layer of the atmosphere where weather events occur, and conduction is the main mechanism through which heat is transferred near the Earth's surface.