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"The widespread confusion about our climate crisis is no accident. For more than a decade, those who deny that climate change is an urgent problem have sought to delay action on global warming by running a brilliant rhetorical campaign and spreading multiple myths that misinform debate. As a result, many people still believe that global warming is nothing more than a natural climate cycle that humans cannot influence, or that it might even have positive benefits for this nation. Neither is true. The science is crystal clear: We humans are the primary cause of global warming, and we face a bleak future if we fail to act quickly." ~Joseph Romm, Hell And High Water
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Thursday, August 30, 2007
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Exactly how does he explain the historical warm periods when humans where not even around. I agree with the idea that humans can impact the environment. But the time scales I see are all limited to a 100 years in the past. There have been significant hotter periods. What about solar influences? What about deforestation? There are so many factors that ARE NOT even being discussed. How can we expect to fix a massive global problem focused on one tiny aspect--and we're talking tiny. Hundreths of a percent (CO2 makes up 0.0360% of the atmo) http://www.physicalgeography.net/fundamentals/7a.html
ReplyDeleteAt what point does it become a problem? .037 or .04? Do we know? How well do we understand the mechanics of our atmo and climate?
John,
ReplyDeleteWelcome to The Devil's Chaplain, where we explore the wonders and unsolved mysteries of the natural universe, unfettered.
All the questions & factors you bring up have been considered and explained by the leading climate scientists of the world in their IPCC Report, as well as by notable scientists like Dr. James Hansen, Director of NASA's Goddard Institute of Space Studies (GISS) http://www.columbia.edu/~jeh1/ .
Instead of rehashing it here, I recommend you spend sometime at...
Real Climate http://www.realclimate.org/
Climate Progress http://climateprogress.org/
Gristmill http://gristmill.grist.org/user/Andrew%20Dessler
And, if you like to discuss or debate AGW issues, in a civil manner of course, SciGuy http://blogs.chron.com/sciguy/ is an excellent forum, frequented by Dr. John Nielsen-Gammon (aka n-g), the Texas State Climatologist http://www.met.tamu.edu/people/faculty/nielsen-gammon.php who tells it like it is.
Again, welcome, and feel free to post a comment anytime.