28th October 2019

nasa
17

What would happen to Earth without the greenhouse effect?

At present, roughly 30% of the incoming solar radiation is reflected back to space by the clouds, aerosols, and the surface of Earth. Without naturally occurring greenhouse gases, Earth's average temperature would be near 0°F (or -18°C) instead of the much warmer 59°F (15°C).

Considering this, what will happen if greenhouse gases continue to increase?

The carbon dioxide that accumulates in the atmosphere insulates the surface of the Earth. It's like a warming blanket that holds in heat. This energy increases the Earth's surface average temperature, heats the oceans and melts polar ice. As consequences, sea level rises and weather changes.

What is the greenhouse effect causing?

Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect"1 — warming that results when the atmosphere traps heat radiating from Earth toward space. Certain gases in the atmosphere block heat from escaping.

What is the most important greenhouse gas?

In order, the most abundant greenhouse gases in Earth's atmosphere are:
  • Water vapor (H. 2O)
  • Carbon dioxide (CO.
  • Methane (CH.
  • Nitrous oxide (N. 2O)
  • Ozone (O.
  • Chlorofluorocarbons (CFCs)
  • Hydrofluorocarbons (incl. HCFCs and HFCs)
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