The Greenhouse Effect

What is the greenhouse effect?

To explain this phenomenon, we need to compare it to a greenhouse.

A greenhouse is a structure where plants are grown.

In these structures, you could grow plants more easily because of its glass or plastic walls which trap heat from the sun.

In a similar way, the greenhouse gases in the atmosphere trap heat caused by the sun's radiation.

The main gases that trap this heat are known as greenhouse gases. You may have already heard about some of them, particularly carbon dioxide.

A greenhouse is a building in which plants are grown

Other Greenhouse Gases

The other greenhouse gases include:

Carbon Dioxide: The Main Greenhouse Gas

The reason for which you probably heard of carbon dioxide is because it is the most crucial one.

Why? The amounts of carbon dioxide has drastically increased in the last two hundred years due to industrialization and is the main cause of global warming.

In order to reduce our environmental impact, we must decrease our carbon footprint.

The greenhouse effect will cause an increase in global surface temperatures

Isn't Carbon Dioxide Natural?

Now you may believe that the greenhouse effect is a bad thing.

However, it is not. In fact, it is very important for life here on Earth and exists naturally. In effect, if all the heat of the sun were sent back into space, there would be no life on Earth (or at least very little).

The problem arises when there is a large increase of greenhouse gases in a very short period of time.

Natural Fluctuations

Over thousands of years the amount of carbon dioxide increases and decreases. Life on Earth could easily adapt to this natural fluctuation.

Moreover, levels of carbon dioxide change from season to season.

During summer and spring, plants take in carbon dioxide and release oxygen through photosynthesis.

In retrospect, when winter arrives, plants release their carbon dioxide back into the atmosphere.

So as you can see, it is normal for concentrations of carbon dioxide to change over time, but only to a certain extent.

Although carbon concentrations fluctuate between seasons, there is a steady annual increase

Very Rapid Increase

So what is a very short period of time? Well, when considering the carbon dioxide levels over the last 800,000 years, they have never exceeded 300 ppm (parts per million).

In the last 200 years, they went from about 260 to 390 ppm; that is an incredibly fast increase, especially in geological terms.

With the rate it has been increasing over the last 200 years, organisms could not adapt. Actually, many are on the brink of extinction or have already gone extinct.

In fact, ocean acidification is occurring due to the increased amounts of carbon dioxide in our oceans which will in turn, fundamentally affect all marine life by endangering species at the bottom of the ocean food chain.

The Greenhouse Effect

Other Greenhouse Gases

It should also be noted that the other greenhouse gases play a role even though it is smaller. However, in the near future they could accelerate the effects of climate change.

A great example would be the methane trapped in the permafrost in the Northern Hemisphere, particularly in Canada and Russia.

Feedback Mechanism of Permafrost

With global warming, this permafrost will melt and massive amounts of methane will be released causing even more increases in temperatures.

This is in turn will cause more methane to melt and this causes a very bad snowball effect.

This snowball effect is one of many that will take place.

For more information, see feedback mechanism.

Other Snowball Effects

As glaciers and the polar ice caps melt, less sunlight is reflected (the color white reflects light) and thus the melting will accelerate.

As the polar ice caps and the massive ice shelves in Antarctica melt, the waters around them will warm up and accelerate this melting even more.

The greenhouse effect is much more alarming then it first appears, especially if you do not take these feedback mechanisms into account.

Troubling Trends of the Greenhouse Effect

Not only is the amount of carbon dioxide that we release into the atmosphere accelerating, but so is the increase in global temperatures.

End result? People simply don't realize this acceleration effect and thus don't understand how dire the situation is.

So now you may ask, what will happen if the planet simply warms up? Will we just have nicer summers? Not exactly.

The greenhouse effect has much more severe consequences.

To learn about them, proceed to effects of climate change.

From Climate State

Return to Top of Page

Return to Causes of Climate Change

Return to Climate Change Guide Home from Greenhouse Effect


Like This Page?

Recent Articles

  1. Interview With Jonah Bryson: "If we fail to protect the environment, nothing else matters"

    Nov 07, 16 12:21 AM

    We had the chance to speak with Film Director, Musician and Conservationist Jonah Bryson during TIFF 2016. Bryson has directed “The Fight For Bala”, a

    Read More

  2. Climate is Back

    Nov 07, 16 12:19 AM

    As I engage relentlessly in the fight to mobilize a complacent public and encourage reluctant politicians to focus on climate change action, I’ve come

    Read More

  3. Politicians Need to Break Free From Fossil Fuels

    Nov 06, 16 11:39 PM

    It’s time to break free from fossil fuels! It’s not time to promote pipelines and expand tar sands production in an attempt to create short-term jobs.

    Read More

  4. The Tides They Are A Changin'

    Nov 06, 16 11:18 PM

    We are really screwing up the Earth, and not having another one handy we need to get the message out to change our ways before it's too late. We cannot

    Read More

  5. Dying for Your Planet

    Oct 30, 16 02:51 PM

    Have you ever thought about what you value so much that you'd be willing to die for? What immediately comes to my mind is that I would do anything to keep

    Read More

Your Awesome Comments

Have your say about what you just read! Please, leave a comment below.

Different Causes

CO2 Levels Widget

Greenhouse Gases

Alternative Energy








How to Help


Important News

Sign a Petition!