What happens when you increase the levels of greenhouse gases in the atmosphere?

Answer 1

• the earth gets warmer.
• homes bordering the beaches, because glaciers and ice caps are melting and increasing sea levels.
• if global warming does not stop (increase of heat from greenhouse gases) the icebergs will melt causing a flooding of many countries.

A:

In general, more greenhouse gasses means more heat is trapped in the atmosphere, or to be more precise, heat is trapped for a longer average period of time, meaning that, at any given time, there is more heat present in the atmosphere than there would be with less greenhouse gasses, and therefore temperatures are higher. That's the general case, though, and the devil, as they say, is in the details. You see, the heat in question is actually '''infrared radiation''' emitted from the surface (after being absorbed as visible light, for the most part). Greenhouse gasses do not indiscriminantly absorb heat. Each greenhouse gas absorbs only '''certain wavelengths''' of infrared radiation. For a single, given greenhouse gas, at some level of concentration, the gas is '''already''' absorbing all infrared in the wavelegths it can absorb. At that point, additional quantities of that gas will not absorb any more infrared, because there's none left, at least not in those wavelengths. Also, different gasses can have '''overlapping''' absorption wavelengths. For example, over two of the three major bands of wavelengths in which carbon dioxide absorbs infrared, it must '''compete''' with water vapor (by far the most abundant and important greenhouse gas). When this occurs, even if one gas is not present in large enough quantities to absorb all infrared in certain wavelengths, the two gasses, in combination, could still be absorbing all available infrared in those wavelengths.
When the CO2 level increases, the atmosphere gets warmer.
If you have an increase of greenhouse gases entering the atmosphere,

more heat is retained.

Answer 2

If the greenhouse effect does continue to increase, then global warming will increase, causing more climate change. Glaciers and ice caps will melt and flood significant amounts of land, possibly even whole cities. Famine will devastate countries, forcing millions of climate refugees to seek food and shelter in other places.

Answer 3

As the greenhouse effect increases temperature rises and climate changes will occur. Possibly causing drastic changes for Earth's inhabitants.

Answer 4

Its effects will continue to occur, only with greater rapidity. Yes, greater rapidity includes greater intensity.