Does Global Warming Exist?

[MannyIsGod]

If Mount St. Helens erupted tomorrow, it'd do more harm in a day than humans have ever done.

Sorry dude, but thats totaly false. There are volcanos erupting everyday all across the globe, and whlie they do release lots of greenhouse gasses into the earth, the rise in greenhouse gases is directly attributed to humans.

Over the last 150 years, carbon dioxide (CO2) concentrations have risen from 280 to nearly 380 parts per million (ppm). The fact that this is due virtually entirely to human activities is so well established that one rarely sees it questioned. Yet it is quite reasonable to ask how we know this.



One way that we know that human activities are responsible for the increased CO2 is simply by looking at historical records of human activities. Since the industrial revolution, we have been burning fossil fuels and clearing and burning forested land at an unprecedented rate, and these processes convert organic carbon into CO2. Careful accounting of the amount of fossil fuel that has been extracted and combusted, and how much land clearing has occurred, shows that we have produced far more CO2 than now remains in the atmosphere. The roughly 500 billion metric tons of carbon we have produced is enough to have raised the atmospheric concentration of CO2 to nearly 500 ppm. The concentrations have not reached that level because the ocean and the terrestrial biosphere have the capacity to absorb some of the CO2 we produce.* However, it is the fact that we produce CO2 faster than the ocean and biosphere can absorb it that explains the observed increase.

Another, quite independent way that we know that fossil fuel burning and land clearing specifically are responsible for the increase in CO2 in the last 150 years is through the measurement of carbon isotopes. Isotopes are simply different atoms with the same chemical behavior (isotope means “same type”) but with different masses. Carbon is composed of three different isotopes, 14C, 13C and 12C. 12C is the most common. 13C is about 1% of the total. 14C accounts for only about 1 in 1 trillion carbon atoms.

CO2 produced from burning fossil fuels or burning forests has quite a different isotopic composition from CO2 in the atmosphere. This is because plants have a preference for the lighter isotopes (12C vs. 13C); thus they have lower 13C/12C ratios. Since fossil fuels are ultimately derived from ancient plants, plants and fossil fuels all have roughly the same 13C/12C ratio – about 2% lower than that of the atmosphere. As CO2 from these materials is released into, and mixes with, the atmosphere, the average 13C/12C ratio of the atmosphere decreases.

Isotope geochemists have developed time series of variations in the 14C and 13C concentrations of atmospheric CO2. One of the methods used is to measure the 13C/12C in tree rings, and use this to infer those same ratios in atmospheric CO2. This works because during photosynthesis, trees take up carbon from the atmosphere and lay this carbon down as plant organic material in the form of rings, providing a snapshot of the atmospheric composition of that time. If the ratio of 13C/12C in atmospheric CO2 goes up or down, so does the 13C/12C of the tree rings. This isn’t to say that the tree rings have the same isotopic composition as the atmosphere – as noted above, plants have a preference for the lighter isotopes, but as long as that preference doesn’t change much, the tree-ring changes wiil track the atmospheric changes.

Sequences of annual tree rings going back thousands of years have now been analyzed for their 13C/12C ratios. Because the age of each ring is precisely known** we can make a graph of the atmospheric 13C/12C ratio vs. time. What is found is at no time in the last 10,000 years are the 13C/12C ratios in the atmosphere as low as they are today. Furthermore, the 13C/12C ratios begin to decline dramatically just as the CO2 starts to increase -- around 1850 AD. This is exactly what we expect if the increased CO2 is in fact due to fossil fuel burning. Furthermore, we can trace the absorption of CO2 into the ocean by measuring the 13C/12C ratio of surface ocean waters. While the data are not as complete as the tree ring data (we have only been making these measurements for a few decades) we observe what is expected: the surface ocean 13C/12C is decreasing. Measurements of 13C/12C on corals and sponges -- whose carbonate s s reflect the ocean chemistry just as tree rings record the atmospheric chemistry -- show that this decline began about the same time as in the atmosphere; that is, when human CO2 production began to accelerate in earnest.***

In addition to the data from tree rings, there are also of measurements of the 13C/12C ratio in the CO2 trapped in ice cores. The tree ring and ice core data both show that the total change in the 13C/12C ratio of the atmosphere since 1850 is about 0.15%. This sounds very small but is actually very large relative to natural variability. The results show that the full glacial-to-interglacial change in 13C/12C of the atmosphere -- which took many thousand years -- was about 0.03%, or about 5 times less than that observed in the last 150 years.

[Trainwreck2100]

Somebody call this man

[MannyIsGod]

You so need new material. You already used that joke, and it wasn't funny the first time. I guess not everyone can be funny.

[Trainwreck2100]

You so need new material. You already used that joke, and it wasn't funny the first time. I guess not everyone can be funny.

Same punchline different delivery thank you.

[MannyIsGod]

Ok, my bad.

[MultiTroll]

Earth shattered global heat record in '23 and it's flirting with warming limit, European agency says (msn.com)

[Blake]

If Mount St. Helens erupted tomorrow, it'd do more harm in a day than humans have ever done.

Darrin?

[Blake]

Global Warming Fiction Vs. Facts
By Alan Caruba
MichNews.com
Jan 18, 2005

No, it doesn't exist other than in it's cyclical and we may be in the warmer part of the cycle.


The famed novelist, Michael Crichton, may achieve what mountains of scientific data produced by meteorologists and others have not. He may get the public to understand that the UN Kyoto Climate Control Protocol is, itself, a work of fiction.



His novel, “State of Fear”, (HarperCollins, 603 pages, $27.95) is a technopolitical thriller based on the widely ignored data that global warming is a hoax, but worse than that, it is a hoax specifically designed to harm the lives and the economy of people living in industrialized nations. It may well be the first novel to come complete with a section devoted to the data that demonstrates not only how false global warming is, but the impact it would have if the UN Protocol was strictly enforced.



When first proposed, the US Senate unanimously rejected the global warming treaty and, in his first term, President George W. Bush withdrew the Kyoto Protocol from consideration in 2001. If this action had not been taken and the treaty applied to the US, the country would have been required to reducing its greenhouse gas emissions by 7% below its 1990 level. They only way to achieve this would have been to impose strict energy use limits.



Take away energy or greatly reduce it and you create the conditions for an economic disaster and impact the lives and health of Americans from coast to coast. You invite draconian “solutions” such as limiting the use of air conditioning, gas rationing, and how many hours factories can operate.



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Green Myths On Global Warming — Debunked

1 MYTH Planet earth is currently undergoing global warming
FACT Accurate and representative temperature measurements from satellites and balloons show that the planet has cooled significantly in the last two or three years, losing in only 18 months 15% of the claimed warming which took over 100 years to appear — that warming was only one degree fahrenheit (half of one degree Celsius) anyway, and part of this is a systematic error from groundstation readings which are inflated due to the 'urban heat island effect' i.e. local heat retention due to urban sprawl, not global warming...and it is these, 'false high' ground readings which are then programmed into the disreputable climate models, which live up to the GIGO acronym — garbage in, garbage out.

2 MYTH Even slight temperature rises are disastrous, ice caps will melt, people will die
FACT In the UK, every mild winter saves 20,000 cold-related deaths, and scaled up over northern Europe mild winters save hundreds of thousands of lives each year, also parts of ice caps are melting yet other parts are thickening but this isn't reported as much (home experiment: put some water in a jug or bowl, add a layer of ice cubes and mark the level — wait until the ice has melted and look again, the level will have fallen). Data from ice core samples shows that in the past, temperatures have risen by ten times the current rise, and fallen again, in the space of a human lifetime.

3 MYTH Carbon Dioxide levels in our atmosphere at the moment are unprecedented (high).
FACT Atmospheric carbon dioxide levels, currently only 350 parts per million have been over 18 times higher in the past at a time when cars, factories and power stations did not exist — levels rise and fall without mankind's help.

4 MYTH Mankind is pumping out carbon dioxide at a prodigious rate.
FACT 96.5% of all carbon dioxide emissions are from natural sources, mankind is responsible for only 3.5%, with 0.6% coming from fuel to move vehicles, and about 1% from fuel to heat buildings. Yet vehicle fuel (petrol) is taxed at 300% while fuel to heat buildings is taxed at 5% even though buildings emit nearly twice as much carbon dioxide!

5 MYTH Carbon dioxide changes in the atmosphere cause temperature changes on the earth.
FACT A report in the journal 'Science' in January of this year showed using information from ice cores with high time resolution that since the last ice age, every time when the temperature and carbon dioxide levels have shifted, the carbon dioxide change happened AFTER the temperature change, so that man-made global warming theory has put effect before cause — this shows that reducing carbon dioxide emissions is a futile King Canute exercise! What's more, both water vapour and methane are far more powerful greenhouse gases than carbon dioxide but they are ignored.

6 MYTH Reducing car use will cut carbon dioxide levels and save the planet
FACT The planet does not need saving, but taking this on anyway, removing every car from every road in every country overnight would NOT produce any change in the carbon dioxide level of the atmosphere, as can be seen using the numbers from Fact 4, and in any case it is pointless trying to alter climate by changing carbon dioxide levels as the cause and effect is the other way round — it is changes in the activity of the Sun that cause temperature changes on earth, with any temperature rise causing carbon dioxide to de-gas from the oceans.

7 MYTH The recent wet weather and flooding was caused by mankind through 'global warming'
FACT Extreme weather correlates with the cycle of solar activity, not carbon dioxide emissions or political elections, the recent heavy rainfall in winter and spring is a perfect example of this — it occurred at solar maximum at a time when solar maxima are very intense — this pattern may well repeat every 11 years until about 2045.

8 MYTH The climate change levy, petrol duty, CO2 car tax and workplace parking charges are justifiable environmental taxes.
FACT As carbon dioxide emissions from cars and factories does not have any measurable impact on climate, these taxes are 'just another tax' on enterprise and mobility, and have no real green credentials.

9 MYTH Scientists on the Inter-governmental Panel on Climate Change (IPCC) issue reports that say 'global warming' is real and that we must do something now.
FACT Scientists draft reports for the IPCC, but the IPCC are bureaucrats appointed by governments, in fact many scientists who contribute to the reports disagree with the 'spin' that the IPCC and media put on their findings.
The latest report suggests that the next 100 years might see a temperature change of 6 Celsius yet a Lead Author for the IPCC (Dr John Christy UAH/NASA) has pointed out that the scenarios with the fastest warming rates were added to the report at a late stage, at the request of a few governments — in other words the scientists were told what to do by politicians.

10 MYTH There are only a tiny handful of maverick scientists who dispute that man-made global warming theory is true.
FACT There are nearly 18,000 signatures from scientists worldwide on a pe ion called The Oregon Pe ion which says that there is no evidence for man-made global warming theory nor for any impact from mankind's activities on climate.
Many scientists believe that the Kyoto agreement is a total waste of time and one of the biggest political scams ever perpetrated on the public ... as H L Mencken said "the fundamental aim of practical politics is to keep the populace alarmed, and hence clamorous to be led to safety, by menacing it with an endless series of hobgoblins, all of them imaginary" ... the desire to save the world usually fronts a desire to rule it.

Lol this post

[Thread]

Lol this post

We're not even supposed to be here, ya damn ass hat, you. That's what that Gore swore to a coon's age ago.

We're livin' still.