Two different things.
Here, we're talking about the reversal of the magnetic poles.
The doomsday scenario you're referring to is the Earth suddenly shifting it's geometric poles. In other words, the way it's titled suddenly makes a drastic change or the axis becomes unstable and the Earth starts to wobble or spin out of control. I don't think it's possible for this to happen spontaneously. I've never seen any evidence that it can.
I hate the people who spout 'NATORUL BICYCLES!!!' Do you seriously think the actual scientists are just ignorant to this and are overlooking it in a grand conspiracy that somehow has remained secret? They know about the cycles that the earth goes through and they also know when something is out of the ordinary.
Acting like this isn't a real problem makes me think those who are denying it have the feeling of 'I know what's really going on, those suckers are buying into all the hype lolz but not me!!'
I'm curious as to what you guys think about this section of an article I'm reading.
Originally Posted by Scientific American
Edit: Fuck it, long story short.
If you include water vapor in calculations (it is the most prevalent greenhouse gas), humans contribute less than 1%.
But whats that? OMGWTFBBQ YOU CAN'T COUNT WATER VAPOR. Ok. Then humans contribute less than 6% of greenhouse gases.
Numbers were current in 2003, and they would not have changed so drastically since then.
That's all I have to say about. The last time I tried to help out in one of these threads, people just took the tables and graphs, photo-shopped them and said BUT WHAT IF!!11!!
You realize you just said a recent 6% shift in something that normally occurs over geological time periods (like, millenia) is no big deal... right?
Also, here's a thought. If you understand the nature of greenhouse gases, or at least how water contributes as a GHG, how on earth can you not understand how increasing atmospheric CO2 is significant?
Check this out: http://en.wikipedia.org/wiki/Intergo...Climate_Change
Its the people that shared the Nobel prize with Gore. I really don't see how people cannot believe that we are not changing the climate in an adverse way. I guess people are really uninformed or really twisted by the media...
Problem isn't just with the CO2 in the atmosphere.
Since you know so much about water vapor i'm going to assume you know how CO2 and seawater are related.The pH of seawater has remained steady for millions of years. Before the industrial era began, the average pH at the ocean surface was about 8.2 (slightly basic; 7.0 is neutral). Today it is about 8.1.
Although the change may seem small, similar natural shifts have taken 5,000 to 10,000 years. We have done it in 50 to 80 years.
I have definitely witnessed a weather change. This year in the sydney region we've been experiencing the most crazy weather patterns in ages, like days of absolute drought-like heat, followed by freezing cold days.
Our night weather never usually went below 15 degrees celcius, this year it's even gone below 10, and one night we actually hit what we've never hit in a long time, 0 degrees (freezing point). I couldn't believe it when I saw ice on my car in the morning.
The winter day weather also is getting low, 8-12 degree daytimes when it never was usually like that.
So yes, our winters here in sydney have been getting colder![]()
I'm also a believer of the earth naturally going through hot/cold cycles, but also believe we are making an impact on the earth. Not necessarily a major impact, but I think small yet significant enough to change things. Hell look at all the species of animals we've wiped out on the earth, butterfly effect peoples!
Posted it once, but maybe you didn't see it. Roy W. Spencer: Global Warming and Nature's Thermostat
Roy Spencer is also a proponent of intelligent design, rofl...
It should be quick, unless we're unlucky and the magnetic field actually dies on us and doesn't flip around. Not saying we wouldn't get cancer or some shit, but life already survived this many times. It will be interesting to see how GPS and all the electronics crap handle it tho.
I don't understand why people say it's caused by the hot/cold cycle so easily. Look at Venus, look at Mars...it's easy to see what happen to an atmosphere if there is no carbon based life form around to force a different equilibrium.
If we reduce the rate of O2 emission, while we increase CO2, it's going to have an impact sooner or later. Is the change we notice entirely caused by mankind? At the rate we are raping forest, oceans, and considering the O2/CO2 rate, it's hard for me to agree we can't notice the impact.
If your geology teacher were as dumb as the one I had in college, I wouldn't take their argument seriously.
Not saying globam warming isn't a business (hi2u Al Gore), but you can't deny the effect of CO2 in the amotsphere.
This is something that we really know nothing about. There is evidence that it is relatively quick compared to the history of the Earth but not relative to humans. It could take years for the flip to take place and there are theories that during the transition the magnetosphere will almost completely disappear.
My guess is during that period albinos will be wiped from the Earth and darker skinned people will prevail.
You're really in no position to make that remark.