Global Warming And Any Effects?

Question

Every day we hear about Global Warming and its possible effects upon the environment.

The earth’s atmosphere is warming up. Thus the icebergs are melting giving a rise in the seas total height etc etc

All this is because of man’s greed for resources such as fuel.

Does anyone think that if things go on the way they are at the moment nature will get its own back with like another ice-age?

Interested to hear peoples opinions.

Thanks

Answer 1

The facts are that we have only emerged from the little Ice Age (LIA) just a mere century ago, and the LIA occurred very rapidly. The most likely cause for the majority of warming and cooling episodes over the last few thousand years appears to be changes in solar output.

http://www.longrangeweather.com/images/GTEMPS.gif

As much as 60% percent of the warming over the last hundred years can be explained by an increase in solar output. There is evidence that humanity may have aided in the recent warming period. But the fact that temperatures appear to have leveled off over the last 9 years, it does not appear that the changes that humanity has made to the atmosphere are a major driver in climate.

http://www.longrangeweather.com/images/gtemps2.gif


Interglacial periods can last from ten to fifteen thousand years, but the majority of them only last 10,000 years. Since solar output levels appear to be dropping and are forecast to drop even more in the near future, the climate will almost certainly get colder, since the last glacial advance ended 10,500 years ago, will it trigger the next glacial advance?

Lets hope not, because god help us if us does.

http://science.nasa.gov/headlines/y2006/10may_longrange.htm

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Answer 2

Ice ages are cyclical, they're governed by the complex interaction of natural cycles that both the Earth and the Sun go through. The short term ice age cycle (glaciation) spans 100,000 years, the long term cycle spans 125 million years.

In terms of the cycle of glaciation we're in a warming up phase and it will be 40,000 years + before the planet starts cooling again. In terms of the full cycle we're heading deeper into an ice age and have approx 10 to 20 million more years before things start warming again.

The complex cycles act as triggers for a series of mechanisms - once the planet gets too hot or too cold nature retaliates, it's like a natural thermostat. However, we're a long way from hitting either the warming or cooling trigger. At the moment the planet has an average global temp of approx 15°C, it needs to drop to approx 5°C or increase to approx 35°C before nature kicks in. Such dramatic changes in temp are a long, long way off even if global warming goes unchecked.

One thing that the media like to focus on is the consequences of global warming disrupting thermohaline circulation. This is the system of ocean currents that distributes warm and cool water around the planet, it has a moderating effect on climate.

The speculation, and that's all it is, is that meltwater runoff from Greenland and the Arctic could introduce cold, fresh water to the North Atlantic and consequently interupt the flow of the North Atlantic Conveyor. This ocean current transports warm water from the Caribbean to the shores of northwest Europe and if it were to diverge, divert, truncate or stop then this part of Europe would see a drop in temps of up to 7°C which would in turn lead to the advancement of glaciers into Scandinavia, Scotland, Northern England, Iceland and Greenland.

There would also be a lesser knock-on effect to the surrounding landmasses reaching into Canada, parts of northern US, Russian, Siberia and other parts of northern Europe.

It's not a mechanism that is clearly understood. What data we have is conflicting and certainly for the time being, there is nothing to suggest that such an event is going to happen any time soon.

Answer 3

As an experienced disaster manager i think there's no chance of another ice-age. We have put a crack in the Eco Balance of our world and now all we can wait is more hot weather n high rising seas... n according to latest research the big earthquakes of the last decade are directly connected with the atmospheric change of surface soil.

So no worry about cold... be ready 4 hot n humid.
Wish i will be proved wrong.
COZ I LOVE MY EARTH

Answer 4

Nothing in nature is constant. The Earth is always changing, the Sun's output is always changing.

Right now the Sun is slightly warmer than it was in the 1970's. It's about the same warmth as it was in the 1930's. And it will cool down again as well.

Man cannot do anything to effect the Earth's climate. We are just too insignificant. People blame man to halt man's progress to a time when they felt more secure, like during their childhood.

Answer 5

first and foremost if you were/are not a science student please forget the concept of GW. science is not so easy for nonscience persons as they might think (with apology plz.) seas cover75% of earth surface, a slight rise will not be noticeable. even if all fresh water goes to oceans the seas will rise by fraction of a meter as fresh water is of just very little %. waht about water cycle will it stop if the temperature is rising ? the evoperation will increase so where is case of sea hight getting rise? pl do not heart ur ego and note: i m sc. post graduate with 25yrs expiriece ilove enviroment as do some one else.

Answer 6

the worldwide may result the entire of the earth . it fairly is risky because it melts the snow of the north pole,the water vapour rises from oceans,reasons the hollow in the ozone layer and so on .