http://www.drsheedy.com/early-humans/up-to-12-000-years-ago.phpAn indication of the types of climate changes is the finding that 13,000 years ago the Sahara desert was actually a swamp and jungle. The Sahara is on a 20,000 year cycle in which it switches back and forth from desert to jungle. (This is suspiciously close to the 26,000 year cycle during which the tilt of the earth rotates a circle that encompasses 3 stars – the current North Star being Polaris.)
http://en.wikipedia.org/wiki/Sahara#HistoryThe climate of the Sahara has undergone enormous variations between wet and dry over the last few hundred thousand years.[41] This is due to a 41000 year cycle in which the tilt of the earth changes between 22° and 24.5°.[42] At present (2000 CE), we are in a dry period, but it is expected that the Sahara will become green again in 15000 years (17000 CE).
I always thought this was interesting:
http://www.drsheedy.com/early-humans/up-to-12-000-years-ago.php
http://en.wikipedia.org/wiki/Sahara#History
Who do we blame for that climate change? And if we tax it enough can we stop it?
Fern
Who do we blame for that climate change? And if we tax it enough can we stop it?
Fern
In the tropical Atlantic, the sun's heat evaporates large amounts of water, creating relatively warm, salty ocean water. This warm, salty water flows westward toward North America, then up the East Coast of the U.S., then northeastward toward Europe, forming the mighty Gulf Stream current. As this warm, salty water reaches the ocean regions on either side of Greenland, cold winds blowing off of Canada and Greenland cool the water substantially (in Figure 2, these regions are marked with white circles labeled, "Heat release to the atmosphere.") These cool, salty waters are now very dense compared to the surrounding waters, and sink to the bottom of the ocean. Thus, the oceanic areas by Greenland where this sinking occurs are called "deep-water formation areas". This North Atlantic deep water flows southward toward Antarctica, eventually making it all the way to the Pacific Ocean, where it rises back to the surface to complete the Great Ocean Conveyor Belt. It takes about 1000 years for the water to make a complete circuit around the globe.
Since the Great Ocean Conveyor Belt is driven in part by differences in ocean water density, if one can pump enough fresh water into the ocean in the key areas on either side of Greenland where the Gulf Stream waters cool and sink, this will lower the ocean's salinity (and therefore its density) enough so that the waters can no longer sink. As a result, the Atlantic conveyor belt and Gulf Stream current would shut down in just a few years, dramatically altering [cooling] the climate.
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Aren't you glad our air doesn't look like Beijing's? That's the thing I don't get about people who want to prove global warming isn't within our control; it's always done to justify further pollution. Who is in favor of that?
No, no it's not.
I'm concerned about pollution in the oceans/seas in general and heavy metals in particularly. I think these are being overlooked because of what I feel is undue focus on CO2.
Fern
No, no it's not.
I'm concerned about pollution in the oceans/seas in general and heavy metals in particularly. I think these are being overlooked because of what I feel is undue focus on CO2.
Fern
Uh, CO2 is an ocean problem and yes--the shit we are directly pumping in to the seas, as well as forcing the sea to act as a sink for the shit we pump into the air (CO2) is a very real problem.
Further, to say that human activity can have no meaningful impact on the earth's climate is to be geologically naive.
Consider the Great Oxygenation Event, one of the largest extinction events on the planet, driven exclusively by new biologic actors--cyanobacteria--constantly pumping out their poison into the atmoshpere...which was toxic to some 95% of existing life, and forever changed the earth's atmosphere.
Fucking Oxygen....
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Whether or not the hypothesis is right or wrong...we don't know. But please do explain this "equilibrium" before the Industrial Revolution.
Global warming isn't a real problem. Just another way for leftists to give the government more power.
Funny how the multi trillion $ oil barons don't look like saints to us, ever wonder how bigoted that lobby is & how they always manage to downplay the effects of climate change, as it's quite clear & evident here!it's an alarmist hoax. east anglia university leaked emails clearly indicate the profound collusion and collective fraud the eco-KOOKS have "cooked" up.
Let us know when China and India buy into your little plan....this is a global issue, right???
This is what thermal eqilibrium looks like prior to the Industrial Revolution.Assuming you are being serious, the equilibrium and the temperature profile since the industrial revolution are two separate things.
The equilibrium they are talking about is thermal equilibrium. Every time the earths climate has changed appreciably the energy coming into the earth has been out of equilibrium with energy leaving. If more energy is being received then temperature must eventually rise until equilibrium is met. If more energy is leaving then temperature must fall until equilibrium is met. This is fundamental heat transfer theory, on the order of F=MA in physics. It's also why your oven works.
Yep. We will regulate the hell out of the US and if that doesn't make the cost of goods go up enough we will just slap emissions taxes on them. No worries, we will just turn around and buy our stuff from countries that have no regulations or emission taxes cause, well you know, it's cheaper.
Yes, yes and we should also get rid of building codes because China and India don't have them and it's cheaper to build there. And we should eliminate workers' rights because China and India don't have them and thus labor is cheaper there.
What is the difference between the blue and red lines?
Temperature change (blue) and carbon dioxide change (red).What is the difference between the blue and red lines?