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Thread: Climate Change & Global Warming

  1. #41
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    Change of climate may hit Norway hardest

    Norway and the Arctic region may be hard hit by changes in the climate, according to UN's new report on the climate. Temperatures in these regions may increase by six degrees.

    While the average global temperatures may increase by three degrees in this century, the increase may be twice that in the northern regions.
    The report also concludes that it is more probable than ever that the changes in the climate are real, and that the global warming is caused by man.


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    Lík börn leika best.

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    Re: Change of climate may hit Norway hardest

    Ending of the Gulf-stream current...

    According to a well regarded climate model:

    The Northern latitudes (i.e. Greenland and the North Pole) will lose their ice due to melting within the next century or so.
    This melted fresh H2O will be released into the Northern Atlantic, which will in turn cause an imbalance in the fresh water / salt water balance of this ocean region. The end result will be -- according to this model -- a halt in the Gulf Stream current that carries warm water from the Carribean to the West and North of Europe...

    This ending of the warm ocean current will precipitate a massive slump in temperatures in Europe - creating a mini-ice-age in this part of the world; creating new average temperatures close to those of similar latitudes e.g. Alaska and Siberia!

    This model has been around for years, though many scientists (and media, governments e.t.c.) play down the significance of it...


    Here is a link to the BBC site about it:

    http://www.bbc.co.uk/climate/impact/gulf_stream.shtml


    Notice what this page says in the conclusion:

    "Implications

    A reduced gulf stream would mean that less heat is brought to north-west Europe and therefore harsher winters. However, current climate model predictions are confident that the increase in temperatures resulting from an increase in greenhouse gas emissions is much greater than the potential cooling effect, so a cooling of the UK climate is unlikely this century."

  3. #43
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    Global Warming to Change Day's Length

    In the next two centuries, global warming could cause the days to grow slightly shorter on Earth, a new study finds.

    Another effect of warming, however, might actually lengthen the day.

    As ocean water gets warmer due to climate, seawater expands thereby raising sea levels and changing the ocean’s circulation and even exerting more pressure on the ocean floor below in some areas, explained Jochem Marotzke of the Max Planck Institute in Germany.

    These pressure changes won’t be uniform across the globe, because global warming will cause the ocean to warm more in some places than in others.

    But over time, the differences will redistribute Earth’s ocean water, pushing it away from deep waters and onto shallower coastal shelf areas, primarily toward the North Pole.

    Marotzke and colleagues, whose new study is detailed in the March 28 issue of the journal Geophysical Research Letters, used ocean conditions predicted in the latest report of the Intergovernmental Panel on Climate Change to model how ocean pressure would change as sea level rises.

    Like the physics behind a figure skater pulling in her arms to cause a faster spin, the pressure transfer would shift the ocean’s mass toward Earth’s axis of rotation,Marotzke said. As the mass shifted, the Earth would spin around faster, shortening the length of the day by about 0.12 milliseconds (about 1/500th of the blink of an eye) by the year 2200.

    “Which, of course, is completely unnoticeable in everyday life,” Marotzke said, so the change in day won’t affect humans. The connection between global warming and length of the day was interesting because it was so unexpected, he said.

    It's not clear, however, whether you might actually have less time or more time to ponder all this.

    Other research suggests a warmer atmosphere would create stronger winds and actually slow the Earth down, causing the planet to spin slightly more slowly and therefore lengthening the day.

    Other factors such as the drift of the Moon away from the Earth, weather and perhaps changes in Earth’s interior also imperceptibly change the speed of the planet’s rotation.



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    Lík börn leika best.

  4. #44
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    A Cold Spell soon to replace Global Warming

    MOSCOW. (Oleg Sorokhtin for RIA Novosti) – Stock up on fur coats and felt boots! This is my paradoxical advice to the warm world.

    Earth is now at the peak of one of its passing warm spells. It started in the 17th century when there was no industrial influence on the climate to speak of and no such thing as the hothouse effect. The current warming is evidently a natural process and utterly independent of hothouse gases.

    The real reasons for climate changes are uneven solar radiation, terrestrial precession (that is, axis gyration), instability of oceanic currents, regular salinity fluctuations of the Arctic Ocean surface waters, etc. There is another, principal reason—solar activity and luminosity. The greater they are the warmer is our climate.

    Astrophysics knows two solar activity cycles, of 11 and 200 years. Both are caused by changes in the radius and area of the irradiating solar surface. The latest data, obtained by Habibullah Abdusamatov, head of the Pulkovo Observatory space research laboratory, say that Earth has passed the peak of its warmer period, and a fairly cold spell will set in quite soon, by 2012. Real cold will come when solar activity reaches its minimum, by 2041, and will last for 50-60 years or even longer.

    This is my point, which environmentalists hotly dispute as they cling to the hothouse theory. As we know, hothouse gases, in particular, nitrogen peroxide, warm up the atmosphere by keeping heat close to the ground. Advanced in the late 19th century by Svante A. Arrhenius, a Swedish physical chemist and Nobel Prize winner, this theory is taken for granted to this day and has not undergone any serious check.

    It determines decisions and instruments of major international organizations—in particular, the Kyoto Protocol to the United Nations Framework Convention on Climate Change. Signed by 150 countries, it exemplifies the impact of scientific delusion on big politics and economics. The authors and enthusiasts of the Kyoto Protocol based their assumptions on an erroneous idea. As a result, developed countries waste huge amounts of money to fight industrial pollution of the atmosphere. What if it is a Don Quixote’s duel with the windmill?

    Hothouse gases may not be to blame for global warming. At any rate, there is no scientific evidence to their guilt. The classic hothouse effect scenario is too simple to be true. As things really are, much more sophisticated processes are on in the atmosphere, especially in its dense layer. For instance, heat is not so much radiated in space as carried by air currents—an entirely different mechanism, which cannot cause global warming.

    The temperature of the troposphere, the lowest and densest portion of the atmosphere, does not depend on the concentration of greenhouse gas emissions—a point proved theoretically and empirically. True, probes of Antarctic ice shield, taken with bore specimens in the vicinity of the Russian research station Vostok, show that there are close links between atmospheric concentration of carbon dioxide and temperature changes. Here, however, we cannot be quite sure which is the cause and which the effect.

    Temperature fluctuations always run somewhat ahead of carbon dioxide concentration changes. This means that warming is primary. The ocean is the greatest carbon dioxide depository, with concentrations 60-90 times larger than in the atmosphere. When the ocean’s surface warms up, it produces the “champagne effect.” Compare a foamy spurt out of a warm bottle with wine pouring smoothly when served properly cold.

    Likewise, warm ocean water exudes greater amounts of carbonic acid, which evaporates to add to industrial pollution—a factor we cannot deny. However, man-caused pollution is negligible here. If industrial pollution with carbon dioxide keeps at its present-day 5-7 billion metric tons a year, it will not change global temperatures up to the year 2100. The change will be too small for humans to feel even if the concentration of greenhouse gas emissions doubles.

    Carbon dioxide cannot be bad for the climate. On the contrary, it is food for plants, and so is beneficial to life on Earth. Bearing out this point was the Green Revolution—the phenomenal global increase in farm yields in the mid-20th century. Numerous experiments also prove a direct proportion between harvest and carbon dioxide concentration in the air.

    Carbon dioxide has quite a different pernicious influence—not on the climate but on synoptic activity. It absorbs infrared radiation. When tropospheric air is warm enough for complete absorption, radiation energy passes into gas fluctuations. Gas expands and dissolves to send warm air up to the stratosphere, where it clashes with cold currents coming down. With no noticeable temperature changes, synoptic activity skyrockets to whip up cyclones and anticyclones. Hence we get hurricanes, storms, tornados and other natural disasters, whose intensity largely depends on carbon dioxide concentration. In this sense, reducing its concentration in the air will have a positive effect.

    Carbon dioxide is not to blame for global climate change. Solar activity is many times more powerful than the energy produced by the whole of humankind. Man’s influence on nature is a drop in the ocean.


    Earth is unlikely to ever face a temperature disaster. Of all the planets in the solar system, only Earth has an atmosphere beneficial to life. There are many factors that account for development of life on Earth: Sun is a calm star, Earth is located an optimum distance from it, it has the Moon as a massive satellite, and many others. Earth owes its friendly climate also to dynamic feedback between biotic and atmospheric evolution.

    The principal among those diverse links is Earth’s reflective power, which regulates its temperature. A warm period, as the present, increases oceanic evaporation to produce a great amount of clouds, which filter solar radiation and so bring heat down. Things take the contrary turn in a cold period.

    What can’t be cured must be endured. It is wise to accept the natural course of things. We have no reason to panic about allegations that ice in the Arctic Ocean is thawing rapidly and will soon vanish altogether. As it really is, scientists say the Arctic and Antarctic ice shields are growing. Physical and mathematical calculations predict a new Ice Age. It will come in 100,000 years, at the earliest, and will be much worse than the previous. Europe will be ice-bound, with glaciers reaching south of Moscow.

    Meanwhile, Europeans can rest assured. The Gulf Stream will change its course only if some evil magic robs it of power to reach the north—but Mother Nature is unlikely to do that.

    Dr. Oleg Sorokhtin, Merited Scientist of Russia and fellow of the Russian Academy of Natural Sciences, is staff researcher of the Oceanology Institute.
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  5. #45
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    But yet we are told that global warming is the end of mankind and to stop killing the Earth.
    The only thing we are killing is our wallets.
    Have you seen the price of energy saving light bulbs? :

    In four years time i will not be able to buy an old incandescent light bulb as the Government has seen fit to expel them to the dustbin.

    http://home.howstuffworks.com/question236.htm

    I wouldn't object so much if the new lights weren't so bloody dark and gloomy.
    "The only way to get smarter is to play a smarter opponent."

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    American sources are saying the same thing.

    Changes in the Sun’s Surface to Bring Next Climate Change

    January 2, 2008

    Today, the Space and Science Research Center, (SSRC) in Orlando, Florida announces that it has confirmed the recent web announcement of NASA solar physicists that there are substantial changes occurring in the sun’s surface. The SSRC has further researched these changes and has concluded they will bring about the next climate change to one of a long lasting cold era.
    (full article)

    No need to feel guilty about leaving lights on, computer on 24/7, driving a gas guzzler, stereo on etc? (Not that I did anyway... probably because I don't pay the electricity bills - not yet anyway. muahaha)

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    Quote Originally Posted by BeornWulfWer View Post
    In four years time i will not be able to buy an old incandescent light bulb as the Government has seen fit to expel them to the dustbin.

    The US will phase out the incandescent bulbs by 2014. But the fluorescent bulbs that are replacing the incandescents contains 6 to 8 milligrams of mercury. So which is worst for the enviroment? Or for people?

    I've used the long fluorescent bulbs for years in light fixtures that require them, but I have never liked changing them because of the chance of breakage.

  8. #48
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    I certainly hope it's true. Our world is hot enough all ready. I've been sweating all day, it's disgusting and far too hot for civilised people.

  9. #49
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    Great, I prefer it cold.

  10. #50
    Well, duh. They're right. We are currently recovering from an ice age (the Little Ice Age) and have been experiencing a rise in temperatures since around the 1600s which has sadly been mistaken for global warming and blamed on a release of CO2 beginning from the industrial revolution. What is failed to be commonly realized is how minimal the output of CO2 is coming from us because we simply have not been making it all that long and we do not make enough of it to cause any catastrophic damage to the environment. As the article said, CO2 isn't something to be afraid of because it is great for plants. The more CO2 there is, the more plants we'll see and the larger they'll be, yet it has not crossed many minds that there are bigger forces at play like the sun or the axial precession of the earth.

    A rise or decrease in atmospheric temperature can largely be attributed to the sun. As its activity fluctuates, so do earth temperatures. Water vapors are created and H2O is a major greenhouse gas that keeps the earth heated unlike CO2 and hydrocarbon use which has minor influence in warming the earth. After every cold period, there is a warm period, then a cold period, and glacier size correspondes to these phases. The earth has been far warmer in the past than it is today and glaciers have been far shorter, but people are still worried. Thanks, Al Gore.





    Most people also think that the earth's axis is still, but it actually wobbles much like a top. To put it simply, the degree it is to or from the sun determines how cold or warm the earth gets. The ice ages are connected with this cycle. There are many ideas as to how soon we should be feeling the effects of an oncoming ice age. Nonetheless, it will be getting colder.

    Humans are so egotistical.

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