Greenhouse gases, particularly carbon dioxide, are part of the Earth's atmosphere; as such, they cover all of the Earth's surface. The whole world is covered by atmosphere.
The greenhouse effect is more pronounced for the earth's surface. Heat rising from the surface is trapped by greenhouse gases. These warm gases heat the air around them as well, also, as the earth' surface again.
Greenhouse gases.
Yes, greenhouse gases trap heat in the troposphere, which is the lowest layer of the earth's atmosphere.
Greenhouse gases in the atmosphere absorb and retain infrared radiation (heat) from the surface of the earth.
Heat rising from the surface of the earth.
No, greenhouse gases warm the air near the earth's surface by trapping heat from the warm earth that would otherwise escape into space.
Greenhouse gases stop the transmission of infrared rays. These are the rays which carry heat away from the earth, and therefore an increase in greenhouse gases results in global warming.
Yes, greenhouse gases are part of the natural greenhouse effect. The gases absorb the heat coming off the surface of the earth and become warm. This warming has kept the earth warm enough for life for millions of years.
Sunlight. The warmth rises into the atmosphere where some is trapped by greenhouse gases. These warm gases then warm the earth's surface again.
Greenhouse gases absorb Infrared heat rising from the surface of the earth.
The greenhouse effect!
Greenhouse gases are naturally occurring gases but by increasing the concentrations of greenhouse gases in the atmosphere we are contributing to global warming.