What is the evidence of greenhouse effect?
Gases which can absorb the infrared radiation are called greenhouse gases . These include carbon dioxide, water vapour and methane. More energy is absorbed than is radiated back into space. This creates a warming effect that is called the greenhouse effect .
How does the human enhanced greenhouse effect cause global warming?
Some of this radiation is reflected back toward space as infrared radiation (heat). But, infrared radiation can also be absorbed by the greenhouse gases, which retain the heat in the atmosphere. It is this human-caused contribution of greenhouse gases and resulting global warming that is the enhanced greenhouse effect.
Why do greenhouse gases cause global warming?
A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming.
Who first predicted global warming?
Svante Arrhenius
In 1896 Svante Arrhenius calculated the effect of a doubling atmospheric carbon dioxide to be an increase in surface temperatures of 5–6 degrees Celsius. This 1902 article attributes to Svante Arrhenius a theory that coal combustion could eventually lead to human extinction.
How did Joseph Fourier discovered the greenhouse effect?
Fourier tried to explain his insight by comparing the Earth with its covering of air to a box with a glass cover. That was a well-known experiment — the box’s interior warms up when sunlight enters while the heat cannot escape.
What gases cause global warming?
Earth’s greenhouse gases trap heat in the atmosphere and warm the planet. The main gases responsible for the greenhouse effect include carbon dioxide, methane, nitrous oxide, and water vapor (which all occur naturally), and fluorinated gases (which are synthetic).
How does the greenhouse effect work is it beneficial or harmful to humans?
Explanation: The greenhouse effect itself is not inherently harmful to humans. The greenhouse effect releases some energy from the planet but it also retains energy, warming the planet. It is the rapidly rising levels of greenhouse gases in the atmosphere that trap more heat, causing global warming.