Global warming is not a 20th century phenomenon. It has, in fact, occurred in the past more than once, along with periods of extreme cold known as the ice ages. With so much written and reported about global warming, sometimes it’s difficult to detect which is fact and which is just part of scientific scare tactics. Here are some facts about global warming that might help:

What exactly is global warming?

Global warming is basically the increase in the temperatures of the Earth’s atmosphere, land masses and oceans. The Earth’s surface temperature is at an average of 59F and over the last hundred years, this figure has risen to about 1F. By the year 2100, the average change in the temperature of the Earth could range from 2.5F to about 10F, enough to melt glaciers and polar ice caps.

The cause of global warming

Global warming has and will always occur naturally. Why it has become such a concern in our lifetime is due to the fact that human activities and practices have contributed significantly to its occurrence and severity. With the advent of industrialization and careless environmental practices, we have caused the increase in the average global temperatures by contributing negatively to the greenhouse effect.

This began about 240 years ago, when the Industrial Revolution was born. As more and more fossil fuels in the form of oil were mined and burned, gases as the by-product of that process began to be released in the atmosphere. Currently, it is estimated that 75% of the increase in the carbon dioxide content of the Earth’s atmosphere is caused by the burning of these fossil fuels.

Global warming and the greenhouse effect

Global warming is related to changes in the Earth’s greenhouse effect. Gases naturally occur in the Earth’s atmosphere and act both to protect and retain heat. These gases include carbon dioxide, methane, nitrous oxide and water vapor. Of these, water vapor is the most dominant and abundant greenhouse gas.

Global warming and the greenhouse effect are not the same thing. The greenhouse effect refers to a natural process that occurs in the Earth’s atmosphere. If this process is disrupted, then it could contribute to global warming.

As the sun’s rays hit the Earth, heat is bounced back to the atmosphere where these gases contain the heat and keep it there to warm the planet. This is an important natural process and allows life forms to flourish and survive. Problems only occur when these gases multiply and build-up, containing heat too efficiently and thus warming the Earth’s atmosphere.

As the Earth’s average temperature rises, effects in its landmasses and sea water level become apparent. Polar ice caps melt along with glaciers, contributing to higher and warmer sea levels. By the end of the century, it is estimated that sea levels can increase from 4 inches to a high of about 40 inches if global warming continues unabated.

Global warming can also affect the behavior of the winds and can also contribute to a harsher and drier climate, with frequent visitings of strong hurricanes. Water from heavier rainfall will not stay long to irrigate the land, however because with a warmer climate, water on the Earth’s surface will evaporate quickly. This has a significant effect on agricultural practices not only in the US but also for the rest of the world.

Another phenomenon that is equated with global warming is the El Nino. The El Nino phenomenon has occurred for possibly thousands of years and is not caused directly by global warming. However, changes in the average temperature of the planet can contribute to its severity and frequency.

Other human practices that contribute to global warming

The agricultural revolution has also contributed to global warming. As more and more communities need lands converted from forests to residential and commercial areas, biomass is reduced, contributing to the increase in the presence of carbon dioxide in those regions. Since carbon dioxide is processed by plants and trees, their absence contributes to its increase.

It is estimated that about 25% of the annual increase in the carbon dioxide found in the Earth’s atmosphere is caused by extreme changes and usage of the Earth’s natural resources. Other practices also include deforestation, salinization, desertification and overgrazing also contribute to global warming. However, many scientists surmise and agree that the contribution is slight and indirect.

Facing the facts of global warming

Countries all over the world have just begun to acknowledge the negative effects of global warming not only to the world’s politics and economy but also to humankind in general. Many of the world’s governments have encouraged implementation of measures to try to counteract the problem of global warming through careful measures and practices designed to protect and respect the environment.

How these measures will fare and contribute to the long-term maintenance of our planet, though, remains to be seen.

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Are you a believer of Global warming or not? Or are you one of the cynics yet to be convinced? Well both have a part to play in the Global Warming arena debate. The whole issue is surrounded by facts and figures but when these facts and figures are looked at it is very difficult to prove them with science, so you end up with hearsay.

Global warming from our point of view is the increase in the average temperature of the Earth’s near-surface air and oceans.

When paying attention to all the different global warming myths that are published in various publications, online, TV, and radio you will understand the issue with conflicting information. Because of these global warming myths come in many forms it is essential to understand the causes of global warming, and the facts attached to those myths.

MYTH: Water vapour is the most important, abundant greenhouse gas. So if we’re going to control a greenhouse gas, why don’t we control it instead of carbon dioxide?

FACT: Water vapour does trap more heat than carbon dioxide (CO2), but as CO2 levels increase in the atmosphere, they lead to warmer conditions, which lead to more water vapour in the air, which leads to even warmer conditions, thus a never ending cycle. Because of this relationship between CO2, water vapour and climate, to fight global warming nations must focus on controlling CO2.

MYTH: Global warming reduces as the ozone hole shrinks.

FACT: Global warming and the ozone hole are two separate issues.

MYTH: Global warming is not occurring due to some glaciers and ice sheets are expanding and not shrinking.

FACT: In most parts of the world, the shrinking of glaciers and ice caps have been dramatic. The best available scientific data indicate that Greenland’s massive ice sheet is shrinking.

MYTH: So what if global warming is a problem, trying to fix it will affect American industry and workers.

FACT: A well thought out trading program will harness American ingenuity to decrease heat-trapping pollution cost-effectively, jumpstarting a new carbon economy.

MYTH: The cold winters and cool summers that have been happening of late are not the effects of global warming, and are infrequent events.

FACT: While it is true that different areas of country’s have experienced some colder winters here and there, between them the average temperature has ben on the up.

MYTH: We can adapt to climate change. Civilizations have survived droughts and temperature shifts in the past.

FACT: Although it is true that the human race has survived an onslaught of drought and prolonged warmth along with the bitter cold and more, entire societies have collapsed from dramatic climatic shifts.

MYTH: Global warming along with extra CO2 will be beneficial, they reduce cold related deaths and stimulate crop growth.

FACT: Any beneficial effects will be far outweighed by damage and disruption.

MYTH: Global warming is just part of the worlds natural cycle. The Arctic has warmed up in the past as it is doing now.

FACT: The global warming we are experiencing is not natural. People are causing it.

While the global warming myth story is interesting, it does reduce the impact of the facts. But as they say “Truth is stranger than fiction.” The many myths on global warming doing the rounds are based on global warming statistics, just with a different view point.

It is always best, as with everything, to look at the global warming myth with an open mind. There is always two sides to every coin, so explore both before making your full opinion.

Perhaps this article on global warming myth with strike a chord with you and will inspire further reading into the subject.

Global Warming reference site, challenging the common perceptions of Global Warming and aiming to give you facts supporting global warming

Please Note... All links within articles are placed by their author-owners and not by this blog.Products with in those links may or may not be the best in the world.If it sounds too good to be true it could be a scam.Articles are posted for their info,ideas and or entertainment value only.

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