By how much does the earth`s magnetic force effect climate change,?
Answer:
By how much exactly, we do not know, but there is more than ample evidence to suggest that our climate is significantly affected by the Earth's magnetic field, or rather, the interplay between the both the magnetic fields of the Sun and Earth, solar winds, and cosmic rays. In addition to the cloud formation hypothesis Jim mentioned, cosmic radiation appears to have some effect on the climate as it directly pertains to temperature. You can peruse through some of these sources, but suffice to say, the one conclusion that you can draw from this is that the debate is NOT settled, that there are many influences to global climate besides the one that alarmists want us to concentrate on.
http://biocab.org/cosmic_rays_climate_ch...
http://www.arm.ac.uk/climate/intro.html...
http://atoc.colorado.edu/~seand/headinac...
http://www.futurepundit.com/archives/002...
http://seedmagazine.com/news/2006/10/the...
I deliberately chose some articles because they looked at this evidence from both sides. Real science never closes debate on complex systems such as climate. It doesn't dismiss ideas as impossible when there is so obviously much we don't know about the multiple interactions combining to form the phenomena we observe.
I couldn't tell you if the Earth's magnetic field significantly affects climate - but to tell you flat out that it doesn't, is wrong.
Without going into details (long, boring and technical) the Earth's magnetic force has very little effect on climate change.
In short - climate change is the result of changes within the atmosphere, such changes and the atmosphere per se are not magnetic.
The Earth's magnetic field is the result of the Earth's liquid centre moving over it's solid core. Magnetism is the result of subterranean activity, climate change is the result of atmospheric activity.
There will at some point in time be a reversal of polarity (we're half a million years overdue for this) but the climate will barely be affected. It's happened many times in the past with no noticeable change to climate.
Interestingly, this is a subject that hasn't caught on. The magnetic field protects the earth from cosmic rays. Those rays have recently been shown to cause water vapor to condense. This results in clouds. This is theoretically why the sun spot activity results in temperature swings beyond what would be expected from solar output alone. I have never heard a scientist (besides me, I am a geologist) who has suggested that the weaking field might affect the climate but I think that it might. Trevor is giving a good and mainstream view but I still think that it might affect the climate more than would be generally believed for the little understood reason provided above. You are correct that the magnetic field is weakening and therefore more cosmic rays will hit the earth. This is resulting because we apparently in the process of magnetic polar reversal which is a process taking hundreds of years. The first stages of the polar reversals based on previous studies of mid-ocean basalts indicate the poles start moving in wide circles becoming weaker and weaker and even essentially disappearing for a time. We seem to be in the stage of the poles moving. It is a coincidence, but we happen to be born in this time of reversal.
Hello,
(ANS) That's non sense, the earths magnetic field is created deep down in the earths molten core. It is the molten magma that churns over and over miles and miles below our feet that creates the magnetic field.
YES! the earths magnetic field does fluctuate but there is NO! evidence to show the earth's magnetic field is becoming weaker.
**The solar wind or stream of particles that comes from the sun influences our magnetic field. Solar storms or solar mass ejection events can create havoc with telecommunications systems, such as mobile phone signals, TV reception,etc.
**The earths magnetic field consistency nor the solar wind affects the overall climate change or global warming. The Global warming we are now seeing is mainly influenced by human behavior & is due to the effects of :
a) pollution man made, over the last 150 years since the start of the industrial revolution and the invention of the internal combustion engine
b) our endless consumption of fossil fuels that release carbon into the stratosphere.
Ivan
nada
Had to star you cos I've been looking into this subject for quite a long time and I agree very much with 'jim z' and with '3DM' - I disagree with 'Trevor' and 'Ivan R' who both give the conventional view.
The Earth's geomagnetic field is certainly growing weaker; this fact is well documented, and the reversal of the geomagnetic poles is anticipated within the next 1,000 years (or sooner). There are several large fluctuating anomalies in the field that are being monitored. To say that a weakening field, or zero field, or pole reversal will definitely NOT affect climate is a totally invalid claim as there's more evidence so far to show that changes in global climate did occur in the past coinciding with pole reversals that may have been due to the weak/zero field at the time of reversal.
The jury is still out r.e. whether geomagnetism is currently (or will in future) have any affect upon global climate, purely because not enough research is being done into this topic.
The best place to begin looking for an intro into all of this is Wikipedia - look up 'geomagnetism'.
Perhaps the field is weakening or perhaps it is only changing its position within our globe.
Either way, the flow of solar particles will be affected which will affect our weather.
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