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Originally posted by defcon5
Co2 ppm is increasing, and regardless of whether or not you want to believe that it is having an impact on the climate, it is in fact having an impact on the oceans:
Originally posted by defcon5
Its ok though, listen to the oil and auto industry apologist who will tell you to buy that F-250 that guzzles a bazillion gallons of gas a year so you can go offroading, I mean let your grandkids worry about if there is any O2 left on the planet in their lifetimes or not…
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Successful indoor growers implement methods to increase CO2 concentrations in their enclosure. The typical outdoor air we breathe contains 0.03 - 0.045% (300 - 450 ppm) CO2. Research demonstrates that optimum growth and production for most plants occur between 1200 - 1500 ppm CO2. These optimum CO2 levels can boost plant metabolism, growth and yield by 25 - 60%.
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Average global temperatures in the Early Carboniferous Period were hot- approximately 20° C (68° F). However, cooling during the Middle Carboniferous reduced average global temperatures to about 12° C (54° F). As shown on the chart below, this is comparable to the average global temperature on Earth today!
Similarly, atmospheric concentrations of carbon dioxide (CO2) in the Early Carboniferous Period were approximately 1500 ppm (parts per million), but by the Middle Carboniferous had declined to about 350 ppm -- comparable to average CO2 concentrations today!
Earth's atmosphere today contains about 380 ppm CO2 (0.038%). Compared to former geologic times, our present atmosphere, like the Late Carboniferous atmosphere, is CO2- impoverished! In the last 600 million years of Earth's history only the Carboniferous Period and our present age, the Quaternary Period, have witnessed CO2 levels less than 400 ppm.
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There has historically been much more CO2 in our atmosphere than exists today. For example, during the Jurassic Period (200 mya), average CO2 concentrations were about 1800 ppm or about 4.7 times higher than today. The highest concentrations of CO2 during all of the Paleozoic Era occurred during the Cambrian Period, nearly 7000 ppm -- about 18 times higher than today.
The Carboniferous Period and the Ordovician Period were the only geological periods during the Paleozoic Era when global temperatures were as low as they are today. To the consternation of global warming proponents, the Late Ordovician Period was also an Ice Age while at the same time CO2 concentrations then were nearly 12 times higher than today-- 4400 ppm. According to greenhouse theory, Earth should have been exceedingly hot. Instead, global temperatures were no warmer than today. Clearly, other factors besides atmospheric carbon influence earth temperatures and global warming.
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Originally posted by ibiubu
So, the best accuracy of a temperature sensing device is +-1C.
Originally posted by defcon5
Well either scientists from around the world including NOAA and Princeton Universities are all liars or you are wrong:
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E-mail messages obtained through a Freedom of Information Act request reveal that NASA concluded its own climate findings were inferior to the CRU analysis. In one e-mail from 2007, when a USA Today reporter asked if NASAs data "was more accurate," NASAs Dr. Reto Ruedy responded with an emphatic no.
"NASAs temperature data is worse than the Climate-gate temperature data. According to NASA," writes Christopher Horner, a senior fellow at the Competitive Enterprise Institute who uncovered the e-mails. Indeed, NASAs record shows it fudged data and cherry-picked data sources.
Concerned about the validity of NASA's climate research data, Sens. John Barrasso, R-Wyo., and David Vitter, R-La., sent a letter to space agency chief Charles Bolden demanding answers and inviting Bolden to testify to the Senate on the credibility of NASA's data.
"The American people deserve to learn the truth about the data," Barrasso told FoxNews.com. "We shouldn't make decisions affecting millions of American jobs when the data isn't credible."
Particularly when NASA is admitting it isn't.
Barrasso and Vitter refer to a Feb. 27 study by former NASA physicist Edward Long. Long concluded that NASA's Goddard Institute for Space Studies (GISS), run by Al Gore's favorite scientist, Dr. James Hansen, had been modifying data, "lowering temperature values for far-back dates and raising those in the more recent past."
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Dr. James Hansen Gets It Wrong Again
Posted on November 17, 2008 by 84rules
Word is slowly getting out about the hoax of man-made global warming. As more legitimate and accurate scientific data gets out to the masses, the global alarmists are resorting to more and more propaganda, half-truths and sometimes outright lies.
Dr. James Hansen is one of those alarmists and his theories are is such a state of decline now that he is pushing bad data to shore up his ever failing reputation.
Christopher Booker at the London Telegraph has this story.
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Successful indoor growers implement methods to increase CO2 concentrations in their enclosure. The typical outdoor air we breathe contains 0.03 - 0.045% (300 - 450 ppm) CO2. Research demonstrates that optimum growth and production for most plants occur between 1200 - 1500 ppm CO2. These optimum CO2 levels can boost plant metabolism, growth and yield by 25 - 60%.
Originally posted by grey580
So by putting more CO2 into the atmosphere we will be going greener? Litterally?
Originally posted by ALLis0NE
Originally posted by grey580
So by putting more CO2 into the atmosphere we will be going greener? Litterally?
No, totally incorrect.
Increases in CO2 will increase acidity in water and soil. Plants and animals and humans can NOT survive in highly acidic environments. That is why pH levels are so important in your blood, food, and water, and especially in fish tanks.
High acidity will kill all those plants, and they wont get a chance to absorb the CO2.
[edit on 21-4-2010 by ALLis0NE]
The majority of food crops prefer a neutral or slightly acidic soil (pH 7). Some plants, however, prefer more acidic (e.g., potatoes, strawberries) or alkaline (e.g., brassicas) conditions.
Originally posted by pieman
i'm suspicious of this scientist spending his time talking about how "clouds have been over looked as a cause of climate change" rather than just presenting papers showing evidence to support his theory.
releasing a book before the paper that supports it? sell it before it's torn to shreds, perhaps?
I finally became convinced that the theory of creation actually had a much better scientific basis than the theory of evolution, for the creation model was actually better able to explain the physical and biological complexity in the world.
why is it that scientists who disagree with global warming spend so much time talking about how stupid their peers are and so little time presenting good evidence?