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Profile IRISH ANGEL
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Message 640927 - Posted: 14 Sep 2007, 4:49:37 UTC
Last modified: 14 Sep 2007, 5:16:29 UTC

Global Warming ,Astroids,controling the weather.
Are we going to burn up?
Are we going to freeze in another ice age?
Are we going to get hit by the big astroid ?
Is it really possiable to control the weather ?

Edit : What's your thoughts about these things?

:)
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Message 640950 - Posted: 14 Sep 2007, 5:36:16 UTC - in response to Message 640927.

Global Warming ,Astroids,controling the weather.
Are we going to burn up?
Are we going to freeze in another ice age?
Are we going to get hit by the big astroid ?
Is it really possiable to control the weather ?

Edit : What's your thoughts about these things?

:)


I throw asteroids at my neighbors frequently. I guess my aim is slipping because not one of them has been fatally wounded yet.
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Profile IRISH ANGEL
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Message 640954 - Posted: 14 Sep 2007, 5:46:39 UTC - in response to Message 640950.

Global Warming ,Astroids,controling the weather.
Are we going to burn up?
Are we going to freeze in another ice age?
Are we going to get hit by the big astroid ?
Is it really possiable to control the weather ?

Edit : What's your thoughts about these things?

:)


I throw asteroids at my neighbors frequently. I guess my aim is slipping because not one of them has been fatally wounded yet.

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Message 643848 - Posted: 18 Sep 2007, 23:51:24 UTC - in response to Message 640927.

Global Warming ,Astroids,controling the weather.
Are we going to burn up?
Are we going to freeze in another ice age?
Are we going to get hit by the big astroid ?
Is it really possiable to control the weather ?

Edit : What's your thoughts about these things?

:)


"Burn up": While the climate is changing (and some attribute it to human activity) the global average temperature has been MUCH warmer in the past -- well before humans showed up. I would say that the Earth isn't likely to 'burn up' (oceans boil, etc.) until the Sun goes nova in a few billion years.

"Ice Age": Well, the Earth, historically, has been in a cycle of intermittent Ice Ages for quite some time (millions of years). The glaciers/ice sheets advance, stay that way for a few tens-of-thousands of years, then retreat for a shorter period before starting the process again. .Some say we may be overdue for the start of the next one, some say we aren't. Some say that 'global warming' may be putting off the start of the next one, some say it might be speeding it up. I've heard scientific arguments on both sides of both questions, and I must say that I am not yet convinced which side is right on each of the questions. I guess we will just have to stick around and find out.

"Asteroid": Well, they HAVE hit the Earth periodically over the course of time. There is no reason to think that another one won't hit in the future, and every reason to believe that one WILL hit us again (its just a matter of time). Sorry, but if it is big enough to cause an ELE (extinction level event -- that is a 'mass extinction' like what killed off the dinosaurs), its likely too big for us to do anything about with our current technology. I wouldn't worry about it. If another 'big one' hits, it hits. Of course, smaller ones we might have a chance to deflect, thus the reason behind all the Near Earth Asteroid finding projects.

"Weather control": LOL... Sure, we can 'control' part of the weather to a very LIMITED extent on a very LIMITED area, and have been for years (since about 1946)... Cloud seeding. Throw, for instance, some Silver Iodide into a cloud, and it might rain earlier than it would have. However, this is very unpredictable and unreliable. This is it when it comes to weather control. 'Global total weather control' is now (and will likely remain for a very long time indeed -- perhaps forever) the stuff of science fiction.

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Message 650119 - Posted: 28 Sep 2007, 9:35:09 UTC - in response to Message 643848.

We know that the magnetic poles switch as that is how geologists found sea floor spreading and led to plate tectonics but this magnetic pole switching is this a gradual event or a rapid one?

How will an event like this effect the weather as the magnetic poles protect the earth I think from a certain amount of solar radiation?

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Message 650144 - Posted: 28 Sep 2007, 11:49:31 UTC

The Earth climate is best described by non linear equations, which can bring to chaos theory. There are efforts like climateprediction.net to approximate these equations by linear equations, much depending on the initial conditions. Unfortunately, they require a great computing power and my PII Deschutes is not adequate. Maybe they should port these programs to the Playstation3, like Folding@home has done, with terrific results (more than one petaflop).
Tullio
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Message 650215 - Posted: 28 Sep 2007, 15:27:53 UTC - in response to Message 650144.

The Earth climate is best described by non linear equations, which can bring to chaos theory. There are efforts like climateprediction.net to approximate these equations by linear equations, much depending on the initial conditions. Unfortunately, they require a great computing power and my PII Deschutes is not adequate. Maybe they should port these programs to the Playstation3, like Folding@home has done, with terrific results (more than one petaflop).
Tullio

Hmmm. Now that I have a better computer to work with, maybe I can donate some time to climateprediction again. The WUs would have taken at least 84 hours on my older laptop!
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Message 655296 - Posted: 6 Oct 2007, 18:55:34 UTC - in response to Message 650119.
Last modified: 6 Oct 2007, 18:56:01 UTC

We know that the magnetic poles switch as that is how geologists found sea floor spreading and led to plate tectonics but this magnetic pole switching is this a gradual event or a rapid one?

How will an event like this effect the weather as the magnetic poles protect the earth I think from a certain amount of solar radiation?


Got any links so we can read up on it some more?

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Message 655314 - Posted: 6 Oct 2007, 19:15:28 UTC
Last modified: 6 Oct 2007, 19:19:59 UTC

Maybe somebody declared degrees based on the number of days in a year. Maybe someone called the angle the Sun moves across the stars each day a degree and rounded it off to some convenient number. I put this message in the wrong thread, accidentally. Having too many children causes more pollution which adds to global warming.
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Message 656149 - Posted: 8 Oct 2007, 8:58:29 UTC - in response to Message 655296.

We know that the magnetic poles switch as that is how geologists found sea floor spreading and led to plate tectonics but this magnetic pole switching is this a gradual event or a rapid one?

How will an event like this effect the weather as the magnetic poles protect the earth I think from a certain amount of solar radiation?


Got any links so we can read up on it some more?


You could look at the following a bit basic

http://volcano.und.edu/vwdocs/vwlessons/plate_tectonics/part9.html
http://csep10.phys.utk.edu/astr161/lect/earth/magnetic.html
http://www.space.com/scienceastronomy/generalscience/earth_poles_991027.html

Message boards : Science (non-SETI) : Global Warming ,Astroids,controling the ...

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