However, its long-term state and average temperature are regulated by the balance between incoming and outgoing energy, which determines the Earth's energy balance.
Any factor that causes a sustained change to the amount of incoming energy or the amount of outgoing energy can lead to climate change.
Volcanic eruptions are episodic and have relatively short-term effects on climate.
Changes in solar irradiance have contributed to climate trends over the past century but since the Industrial Revolution, the effect of additions of greenhouse gases to the atmosphere has been over 50 times that of changes in the Sun's output.
The dominant product of fossil fuel combustion is carbon dioxide, a greenhouse gas.
The overall effect of human activities since the Industrial Revolution has been a warming effect, driven primarily by emissions of carbon dioxide and enhanced by emissions of other greenhouse gases.It is called a greenhouse gas because it produces a “greenhouse effect”. Carbon dioxide and other substances are referred to as climate forcers because they force or push the climate towards being warmer or cooler.The greenhouse effect makes the earth warmer, just as a greenhouse is warmer than its surroundings. They do this by affecting the flow of energy coming into and leaving the earth’s climate system.Human activity is the main cause of climate change.People burn fossil fuels and convert land from forests to agriculture.Climate change can also be caused by human activities, such as the burning of fossil fuels and the conversion of land for forestry and agriculture.Since the beginning of the Industrial Revolution, these human influences on the climate system have increased substantially.Carbon dioxide is the main cause of human-induced global warming and associated climate change.It is a very long-lived gas, which means carbon dioxide builds up in the atmosphere with ongoing human emissions and remains in the atmosphere for centuries.Such climate change could have far-reaching and/or unpredictable environmental, social, and economic consequences.Carbon dioxide is the main cause of human-induced climate change.