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Posted on 06/01/2009 12:37:02 PM PDT by decimon
If it was that warm then the seas really would be much higher. A bit warmer than it is now would be fine with me.
Sorry if I misread the article. I thought it said the animals fed on the plants/leaves? I can see the plants going dormant for 6 months, but if they did, did the animals hibernate? Or just starve? LOL
I think you got it, hibernate or starve. If you can’t fish or kill seals, you are really out of luck.
The interesting thing to me is how warm it used to be around the Arctic Ocean. About 220,000 years ago, brown bears made there way up there, and liked the seal fishing so much they stayed, turned white, took up Olympic swimming and became polar bears. Yep, true story, polar bears are brown bears dyed white, so the seals can’t see them, with a longer nose for sniffing the seals out when they pop up in their blow holes..
Just because it is now, does not mean that is how it always was, nor will always be.
I think i read something once that said the poles used to be reversed. That would make more sense than saying that there used to be tropical plants in an arctic area.:)
The magnetic poles, and earth's resultant magnetosphere, while they play a big part in shielding earth from the solar wind and help deflect cosmic rays, they don't have anything to do with climate. Well, unless the magnetic field drops off even more, then it could be big trouble for earth.
IMHO, climate is sun, rotation/orbit and cosmic ray dependent. It also is effected by what our solar system travels through in our journey in, around and with the Milky Way galaxy. Those influences are so big they overwhelm anything else.
Rays and particles play big parts in energy transfer when it comes to space.
One thing for sure, like with climate, we simply don't know what the magnetic poles are up to.
Ocean front property in Arizona!
Although I think the sea level rise has as much hype as globull warming.
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Thanks decimon. Another one I'd planned to post, thanks for doing the work! |
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If you mean the current scare stories then I agree.
there are plenty of plants in the arctic right now that survive a long darkness.
True? 7 degree rise since 1991? first i heard of that.
anyone know if its true?
I think climate scientist degrees are like dog years.
I understand that, but they’re adapted- and not tropical plants. Three rainy days with little sun and they start yellowing and dropping leaves, even in a greenhouse.
If the poles reverse, wouldn’t that make the north and south poles move, as well as the equator? I’m confused.
Yep, but the surf sure would be grand.
Darned Global Warming caused Global Cooling resulting in an Ice Age that killed all these holy critters and injured Mother Earth’s feelings.
Evil SUV’s held at fault for climate change.
The north magnetic pole would go where the south magnetic pole is and vice versa. The equator shouldn't be much if at all affected.
Remember that the magnetic poles are not the same as the physical poles.
One at a time, rotational spin axis first:
Spin axis is fixed, caused by earth's spin and rotation around the sun. The spin axis, as the name implies is an imaginary line through the earth at the center of rotation.
The rotational spin axis, ie north and south due to orientation of the physical earth in relation to the sun is ‘relatively’ constant and does not change much. It wobbles a little, tilts a little, these are called Milankovitch cycles, and are generally driven by sun-earth-moon orbital dynamics, taking into account the center of mass of our solar system and other variables.
Now the magnetic poles:
The magnetic poles, compass readings, are separate from the spin axis. So when they swap, the only real change is going to be your compass turns upside down, and the solar wind is going to change it's impingement direction on the earth's now reversed magnetosphere. It's only the magnetic polarity that is involved — Physically, the earth still spins the same and in relation to the sun's rotation, the north is still north, the Arctic is still in the same physical place.
The rotational dynamics of the spinning earth keeps the magnetic poles generally on the parts of the earth near where the spin axis meets the earth's surface. It is generally thought that earth's rotating liquid iron core generates it's magnetic field.
Only your compass, and particles coming from the sun, see any changes when the magnetic poles swap polarity. The weird thing is compass north does not have to point to the Arctic.
When the big magnetic switchover comes:
So what really happens when the poles swap magnetic polarity — No one knows since no human has ever observed such and event and been able to tell. One possible tough spot is if the magnetic field goes to zero and stays for any length of time, like maybe years, the solar wind is going to play havoc with earth's atmosphere, since the earth's protective magnetosphere will have collapsed. This could be really bad — We can envision how bad that might be for life on earth, but have no real way of knowing for sure.
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