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Originally posted by TaupeDragon
Hello Essan
Thanks for taking the time to post - very interesting. *SO*, if you were made 'Enviroment Tsar', would your first priority be to cut CO2 emissions, or do you think there are other, more worthwhile things you could do for the enviroment?
Originally posted by TaupeDragon
Yes - *not denying anything* about ocean current warming and effect on ecosystems - I was just trying to get to of 100% effect, what percentage is man-made and what percentage is natural.
And I'm still none the wiser
Originally posted by Essan
Do you assume we know all there is to know about the atmosphere, oceans, solar activity and Earth's orbit - and how they all interact to create our climate? Or do you assume that there's some important stuff we still haven't discovered and which may one day overturn long held paradigms about climate change?
Not at all - The more I have read about this in the past few days, the less I feel I understand, which is encouraging!
The media certainly in the UK has been presenting Global Warming as being an entirely man-made phenom - linked mainly to co2 emissions. Really it's been pretty much presented as more than the model/theory that it appears to be - a certainty, in fact.
I certainly I remember John Prescott being *very* smug over Kyoto, and, as I wrote previously, North American politicians that don't sign Kyoto are really treated as if they are lunatics.
I'm just wondering if the media could be slightly more balanced in it's coverage of the Global Warming/CO2 thing, because as far as I can make out, CO2 is one of only several factors involved in a complex cycle.
As you say - there are *other* enviromental issues that we *know* man has a direct effect on, such as deforestation, over-fishing, excessive use of fertiliser, water pollution, ozone layer (continue to infinity.....)
Maybe our politicians should start concentrating on these issues, rather than trying to regulate a cycle they have no real control over?
TD
Originally posted by SoLaR513
Im going to have to say that I dont need scientist or any thing to decide for myself all I have to do is walk out side. For years we have been witnessing a trend of dramatic change. Look at the number frequency and intensity in hurricanes for example. I am willing to bet that this year there will be more and worse. This indicates a trend. Also there are the many different areas experiencing warmer winters. Again, this has been a trend of getting worse. Then you add the human equation. Car pollutants, methane build up from cattle, miles upon miles of polluted water supplies again from things like cattle, air and water pollution from industry. We keep making more people so we produce more stuff that creates more pollution. This has to be influeincing the climate I just cant believe that it dosnt.
Originally posted by SoLaR513
For years we have been witnessing a trend of dramatic change. Look at the number frequency and intensity in hurricanes for example. I am willing to bet that this year there will be more and worse.
Originally posted by TaupeDragon
I'm really not sure who will profit - I can't see any reason for anyone making this up. It would cost a fortune for governments and industry to change their polluting ways, and probably cost a lot of jobs (just look at the Canadians and Kyoto - isn't Harper going to withdraw?)
Originally posted by sardion2000
Afraid of people learning you're true motives?
Originally posted by TaupeDragon
Hello
Headline on the BBC today is concerning the 'fact' that we are reaching a tipping point wrt co2 emissions and that we risk serious/catastrophic climate changes as a result.
news.bbc.co.uk...
Look around on the web and you'll see apparently rational and qualified scientists who strongly disagree with the climate change theory.
www.friendsofscience.org...
Who's right here? Do you go with the consensus, or do you agree with the dissenters?
I'm still not clear why there have been significant changes in the ice caps over millions of years, and large fluctuations in co2 levels apparently *after* global warming happened.
Confused? I am.
TD
Originally posted by orca71
The science behind the computer models are exceptionally sound and have proven to be remarkably accurate. Global warming is real. Its because of human activity. Its not going to change. We are all doomed! Doomed! Well, maybe not all of us but certainly many will suffer directly from global warming.
Timing of distant recordings is hard so only sure thing which can be said surely is that climate changes and CO2 concentration changes are tied together very closely.
Originally posted by Essan
However, I understand that isotopic studies of the atmosphere have shown that CO2 amounts equal to the recent rise have been found to have originated from the burning of fossil fuels.... So there doesn't seem to be much question that the current increase in CO2 levels is down to us.
You have that proof in grounding of air traffic after WTC.
Originally posted by Essan
I also think that increased air travel may be playing a bigger role than is curently thought - I'd like to see more research into the impact of contrails and indeed in the release of pollutants (from jet engines) at high altitude.
Actually time around world wars and after saw huge growth of heavy "smoke pipe industry" which surely caused dramatic increase of nitrogen/sulfur particle emissions which besides acid rains cause also diseases.
It may just be coincidence, but global temperatures rose during the early part of the 20th century before levelling off or even dropping around the 50s and 60s. This is genually accepted as being entirely down to natural factors. Therefater it began rising again from the late 70s and has continued to do so ever since - this subsequent rise is attributed to human activity because models show that natural factors alone cannot explain it. The late 70s was when international air travel really took off as the 'ordinary people' began to be able to afford to fly abroad on a regular basis.
Dr. Jim Hansen, a top NASA scientist, had interview requests about his work with global warming denied by a NASA public affairs officer by the name of George Deutsch. While Deutsch works for NASA, he is actually a presidential appointee who worked for President Bush and Vice President Cheney during the 2004 elections.
Got this so far? Deutsch had this position as NASA public relations specialist given to him by the current administration, and according to Dr. Hansen he used it to suppress information about global warming. This issue was important enough to NASA officials that Mike Griffin, NASA’s Administrator, sent an email on Friday, Feb. 3 to all NASA employees (and which is now posted on the NASA website) saying that "It is not the job of public-affairs officers to alter, filter or adjust engineering or scientific material produced by NASA’s technical staff."