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It's not! There is a natural greenhouse effect, which keeps the earth warm enough for life, but this is not what we mean by global warming.

As long as greenhouse gas concentrations remain at their natural, long term levels, uninfluenced by human activity, the warming of the earth is natural and has in fact helped maintain the world's temperature at a comfortable level suitable for human existence. The increase in global temperatures above this level is accepted by most climate research scientists as principally the result of human activity.

Greenhouse gases are gases that build up in the Earth's atmosphere and absorb infrared radiation. This causes a warming effect in the lower atmosphere and on the surface of the planet. The main naturally occurring greenhouse gases are: water vapour (H2O), carbon dioxide (CO2), methane (CH4) and ozone (O3). Water vapour does not refer to clouds that are lower in the atmosphere, as clouds are liquid water and reflect solar radiation, which would have a cooling effect.

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βˆ™ 10y ago
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βˆ™ 6mo ago

Global warming due to natural causes can be attributed to events such as volcanic eruptions, variations in solar radiation, and fluctuations in Earth's orbit. These factors can impact the amount of greenhouse gases in the atmosphere and the Earth's overall climate, causing temperatures to rise. However, the current increase in global temperatures is primarily driven by human activities, such as burning fossil fuels and deforestation, which release large amounts of greenhouse gases into the atmosphere.

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βˆ™ 12y ago

It is part of earth's natural process that greenhouse gases regulate the temperature at the surface.

Normal cycles of warming and cooling are closely tied with orbital periods known as Milankovitch Cycles. According to the orbital periods earth should actually be cooling at the present time, ever so slightly, not warming.

Besides orbital cycles there are other factors that can affect global climate. While volcanic eruptions spew material into the air which has the immediate effect of cooling the earth for a few years, after that ash settles out the remaining gases generally have an overall warming effect.

Mountain building activity along coastal areas create vast rain shadows that cause forest vegetation to die. Forests can sequester large amounts of carbon, which when released would contribute to warming. Forests also have a lower albedo than desert sand. Higher albedo areas reflect more heat.

One more natural warming effect concerns melting ice. Ice has a very high reflectivity. The ocean water beneath it tends to be much darker, so as the ice melts, the larger ocean surface area absorbs more heat, thus boosting temperature.

At the present time, however, artificial effects exceed natural warming effects by about two orders of magnitude.

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Q: Why does global warming happen naturally?
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Do greenhouse gasses help global warming?

They don't help with global warming naturally but the large buildup of greenhouse gases does assist with global warming.


Does global warming happen every year?

Global warming is not seasonal, or annual. It is gradually increasing all the time.


The naturally occurring atmospheric gas that is blamed for causing global warming is?

Carbon dioxide has been charged and convicted of causing global warming.


What is worst global warming or global cooling and why?

If global cooling means the gradual cooling into an Ice Age, then that has happened in the past and it has taken thousands of years to happen. The present global warming has all happened far faster, in less than 200 years, and is threatening all life on the planet if we can't stop it. Global warming is by far the more dangerous situation.


Is both global environment and global warming is same?

Not quite, though they are very closely connected. Global warming is the warming of the earth. This is causing climate change, which is the many different changes in climate that are beginning to happen.

Related questions

Do greenhouse gasses help global warming?

They don't help with global warming naturally but the large buildup of greenhouse gases does assist with global warming.


What does 'Against man-made Global Warming' mean?

If you were asked to speak in a debate, "Against man-made Global Warming" you would be arguing that man is not causing Global Warming. You would have to argue that Global Warming is occurring naturally.


What will happen to glaciers if there is global warming?

they will melt


If global warming affects the hole in the ozone layer what would happen?

If global warming affects the ozone hole, the UV will come in. This will lead to more global warming.


Does global warming happen every year?

Global warming is not seasonal, or annual. It is gradually increasing all the time.


What happen if the world warms up?

global warming


What will happen if you use renewable energy?

Global warming!


The naturally occurring atmospheric gas that is blamed for causing global warming is?

Carbon dioxide has been charged and convicted of causing global warming.


If we wern't here would global warming happen?

No. Global warming is caused by man burning fossil fuels and cutting down forests. No other animal does that. If there were no humans on earth, there would be no global warming.


What happens if global warming is eliminated?

that probibly will never happen because we are to deep into the mess of global warming to expect much change for the better.


Why are people inventing things that cause pollution for global warming to happen?

Because the things they invent are the daily needs of people. And anyways, In my opinion... global warming is GOING to happen, No questions asked (:


Who thinks global warming is not going to happen?

People who don't believe science.