how is greenhouse effect formed?

Answer 1

The greenhouse effect is a naturally occurring process that aids in heating the Earth's surface and atmosphere. It results from the fact that certain atmospheric gases, such as carbon dioxide, water vapor, and methane, are able to change the energy balance of the planet by absorbing longwave radiation emitted from the Earth's surface. Without the greenhouse effect life on this planet would probably not exist as the average temperature of the Earth would be a chilly -18° Celsius, rather than the present 15° Celsius.

As energy from the sun passes through the atmosphere a number of things take place (see Figure 7h-1). A portion of the energy (26 % globally) is reflected or scattered back to space by clouds and other atmospheric particles. About 19 % of the energy available is absorbed by clouds, gases (like ozone), and particles in the atmosphere. Of the remaining 55 % of the solar energy passing through the Earth's atmosphere, 4 % is reflected from the surface back to space. On average, about 51 % of the sun's radiation reaches the surface. This energy is then used in a number of processes, including the heating of the ground surface; the melting of ice and snow and the evaporation of water; and plant photosynthesis.

The heating of the ground by sunlight causes the Earth's surface to become a radiator of energy in the longwave band (sometimes called infrared radiation). This emission of energy is generally directed to space (see Figure 7h-2). However, only a small portion of this energy actually makes it back to space. The majority of the outgoing infrared radiation is absorbed by the greenhouse gases.

Answer 2

Hi. The greenhouse gases allow visible light to pass through but not infrared. The Earth's surface gets heated by the Sun and normally most of the heat get emitted and radiates back into space. The greenhouse gases prevent this, so heat builds up.

Answer 3

The sun's energy enters the atmosphere in the form of light waves and heats up the earth. Naturally occurring gases trap the heat, creating a viable environment for life on earth. The rest of the heat escapes back out into the atmosphere.

Human engendered gases such as CO2, methane and nitrous oxide have increased the amount of heat that is trapped, increasing global temps, storms, and glacial ice melting, as well as spreading disease, and causing species extintion and whole ecosystem failure.

Answer 4

There are also cooling gases. One is SO2, the only problem is that it also creates Sulfurous acid rain.

Answer 5

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