I am concerned - are you?

The atmosphere consists of a veil of gases that hold enough heat to sustain life on earth. But man has over the past 150 years have dramatically increased the amount of gases in the atmosphere. As a result, now the rising global temperatures and puts the earth's climate out of balance.
The natural greenhouse effect is a prerequisite for life on Earth. Without this process had the average temperature on Earth was -18 instead of today's 15 ° C. The heat from the sun in the form of radiation. Most reflected back into space. But some of the heat radiation is absorbed in the atmosphere and sent back to Earth, which then warms up.


But when the man, with the industrial revolution began to burn oil, coal and gas, increased emissions of greenhouse gases into the atmosphere. Greenhouse gases add themselves as a cover around the Earth and do so more heat is reflected back to Earth. The more greenhouse gases, the hotter it becomes.

Studies of tree rings, ice cores and coral reefs show that the temperature of the earth's surface is now higher than it has been over the last 600 years. The temperature has increased by almost 0.8 ° C since the early 1800s and 2005 was the warmest year since measurements began. Eleven of the last twelve years (1995-2006), the record of global surface temperature. The sea level since the late 1800s has risen by 17 cm also show a global warming.

The causes of warming is, in addition to the combustion of fossil fuels, our livestock and our way to cultivate fields, woods and fields. But even if we were to stop all greenhouse gas emissions now, the temperature on Earth will continue to grow for some time to come. The climate is slow to react to external influences, and we do not see the effect of greenhouse gases immediately.

According to the UN Climate Change's latest report, the effects of climate change much earlier, faster and become much more difficult than was previously anticipated. Therefore, greenhouse gas emissions begin to diminish by 2015 years if we are to prevent dangerous climate change. Fortunately, there is still time to act.

Greenhouse effect - Wikipedia

The greenhouse effect refers to the change in the steady state temperature of a planet or moon by the presence of an atmosphere containing gas that absorbs and emits infrared radiation.[

The earth's "greenhouse effect"

This section provides an overview of the earth's atmospheric "greenhouse effect" by briefly exploring the atmospheres of nearby planets and discussing our atmosphere's greenhouse gases. The general concepts found in this section include the following....

What is the greenhouse effect?

There are two meanings of the term "greenhouse effect". There is a "natural" greenhouse effect that keeps the Earth's climate warm and habitable. There is also the "man-made" greenhouse effect, which is the enhancement of Earth's natural greenhouse effect by the addition of greenhouse gases from the burning of fossil fuels (mainly petroleum, coal, and natural gas). In order to understand how the greenhouse effect operates, we need to first understand "infrared radiation".

The greenhouse effect is a natural increase in the temperature of the planet as energy from sunlight is trapped by the so-called greenhouse gases - such as water vapour and CO2 - that have the ability to absorb and reflect energy.

Short wave solar radiation passes through the clear atmosphere relatively unimpeded, but long wave infrared radiation emitted by the warm surface of the Earth is absorbed partially and then re–emitted towards the earth by a number of greenhouse gases (mainly water vapour and CO2) in the atmosphere. Due to these greenhouse gases, much of the radiation does not pass straight into space, but remains to heat up the atmosphere.
Levels of greenhouse gases are increasing

Without the greenhouse effect, the world would be covered in snow and ice and lack the diversity of life that we have today. However, due to our combustion of coal, oil and gas, the level of greenhouse gases, mainly carbon dioxide, in the earth’s atmosphere increased sharply in the 20th century. As such, the natural balance between the incoming solar energy and the outgoing radiation has been disturbed, which means the greenhouse effect is reinforced.
World temperatures are on the rise

During the last century, the earth’s average temperature increased by 0.7 degrees, an increase that is difficult to explain without taking into account the increased CO2 levels in the atmosphere. If carbon dioxide emissions are not drastically reduced, the temperature is likely to strongly increase during the new century.

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