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Wednesday, 3 October 2007

Global warming explained

There is a lot of confusion about global warming at the moment. Over the last few months I have heard many educated people make very uneducated comments about it, but the time has passed and they are not appearing here for now. Even amongst scientists there is a lot of disagreement on the subject, with people saying it doesn't exist, or that it does, or that it's a problem, or that it isn't, or that it's caused by humans, or that it isn't.

At the moment the following post is just a theory, but I hope you find this explanation of global warming a compelling argument:

Do you remember in school you learned about the seasons? You will have seen a picture like this:

The Earth is tilted and remains tilted for the whole year, during which it moves round the sun once. When the Earth is in the position on the left, northern parts are tilted towards the sun so it is summer, while southern parts are tilted away, making it winter. When the Earth moves round to the right, it is winter in the north and summer in the south. Now have a look at this map:

It is immediately clear that most of the land is in the northern hemisphere. And most of the countries in the southern hemisphere are less industrialised, with the exception being parts of Oceania like Australia. Since the industrial revolution, large industrial chimneys have appeared all over the industrialised countries. It has been shown that the heat that power stations and factories produce is not enough to warm the planet on its own, and yet we are told that the planet seems to be heating up. Also, we see that the weather is becoming more extreme.

Both of these facts can be explained using one theory. The chimneys of the northern hemisphere are blowing the Earth out of its orbit, like a plane being propelled by blowing the air away behind it:

Now, in the northern summer (Left hand side), the north pole is closer to the sun than the southern pole is during its summer (Right hand side). The southern winter becomes colder than any winter before, and accordingly, the northern summer becomes hotter. So you see, this makes the weather vary more across the globe ie, the weather is more extreme. Variations in temperature cause wind so tropical storms become more frequent and more violent, as has been observed. And this phenomenon of extreme weather is becoming more prevalent because of the emergence of China and India, both of which are in the northern hemisphere, building more and more chimneys. We are quite literally being blown away.

Global warming has been caused because we are moving closer to the sun. We use more electricity and heating during the winter, so this gas propulsion occurs more at that time. Winter time is when we are angled away from the sun. We are blowing gas away from the sun, and hence we move towards the sun.

The Earth is not in its natural orbit. It is held out of place by the blowing of industrial chimneys. If the chimneys stopped, the planet would return to its original orbit. Thus global warming can be solved if we reduce the size of our industries.

You are probably wondering if there is any proof of this. Recently I discovered a map in the national geographic magazine. They say

"THE SCIENTIFIC EVIDENCE IS CLEAR: Surface temperatures on Earth are warming at a pace that signals a decisive shift in the global climate, one expected to last for centuries. Previous epochal changes of climate, such as the Ice Age that ended 11,500 years ago, were set in motion by natural causes—variations in Earth's orbit that affect the amount of sunlight warming the planet. In those cases, the cycles of cooling and warming unfolded slowly, over the course of millennia. This episode is different."

If you can't see the map in the link, it looks similar to this, although this is a little different. This shows the variations in temperature from the average in 2001 alone, rather than for many years, but the trend is the same.

(Image courtesy NASA-Goddard Institute for Space Studies)

The world is generally warmer, but more importantly for the theory, the warming is greatest in the northern hemisphere, as this theory suggests.

So there you have it, this is a possible cause of climate change that explains the facts neatly and logically. Any questions?

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