Global Temperature Change and Geomagnetic Field Intensity

Alan Cheetham drew my attention to a post on his blog, showing the close relationship between geomagnetic field strength, and rate of temperature change (warming in the N Hemisphere and cooling in the S Hemisphere). The idea is that the the effect of cosmic rays on the Earth’s temperature by seeding low clouds, will be most apparent where the magnetic field is weakest. Maps of the geomagnetic field show an uncanny correlation with ‘recent warming’ (UAH 1978-2006):

For good measure, here is the geographic map of RSS trends (from ClimateChangeSkeptic).

Bearing in mind the north pole is a small area of low magnetic field strength, straddled between two areas of the lowest field strength, the theory would predict greater warming in that area.

I presume warming in the north and cooling in the south is due to the polarity of the magnetic field. Its hard to look at correspondences like these and not be convinced that the recent warming is due to magnetic-field sensitive cosmic rays.

The hallmark of a correct theory, is that it not only explains with greater clarity the main features in its domain, but it also explains other effects that had puzzled people for a long time, resolving questions that were not anticipated. Is that whats happening here?

Here’s a challenge — describe an appropriate methodology for calculating the significance of this correspondence, and calculate its value.

Alan Cheethams blog

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0 thoughts on “Global Temperature Change and Geomagnetic Field Intensity

  1. This is not surprising – all magnetic fields are produced by electric currents, and electric currents passing through matter generate heat.

    Cosmic rays are also electric currents, (charged particles in motion) so when you decide to think about the problem in terms of electrical engineering, things become easier to explain.

    Not so easy is to work out the precise relationship between the geomagnetic field, and the temperature anomalies.

    For a start do the temperature anomalies have any relationship to the thermal state of the solid earth underneath them, or are they restricted to the atmosphere?

    And what is the connection with clouds?

    Remember that it is generallybeleived that its weather that produces the atmosphere electrical phenomena, rather than vice versa.

  2. This is not surprising – all magnetic fields are produced by electric currents, and electric currents passing through matter generate heat.

    Cosmic rays are also electric currents, (charged particles in motion) so when you decide to think about the problem in terms of electrical engineering, things become easier to explain.

    Not so easy is to work out the precise relationship between the geomagnetic field, and the temperature anomalies.

    For a start do the temperature anomalies have any relationship to the thermal state of the solid earth underneath them, or are they restricted to the atmosphere?

    And what is the connection with clouds?

    Remember that it is generallybeleived that its weather that produces the atmosphere electrical phenomena, rather than vice versa.

  3. Some recent studies didn’t find any link between increased cosmic radiation and increased cloud formation.
    http://news.bbc.co.uk/2/hi/science/nature/7352667.stm

    Perhaps geomagnetic field intensity affects global temperature change through a different mechanism. Until recently, everyone believed that Earth’s magnetic field deflects and protects Earth from solar wind and coronal mass ejections. But now a new study has found that instead Earth’s magnetic field collects solar wind over a much larger area than Earth’s diameter and slams half of it around Earth’s poles in a sling-shot kind of way with twice the energy of the original solar wind.
    http://www.newscientist.com/article/mg20126941.800-auroras-the-greatest-show-on-earth.html

    Which means that the amount of energy from the solar wind delivered to Earth’s atmosphere varies with the amount of solar wind produced by the Sun and with the strength of the Earth’s magnetic field. The stronger the Earth’s magnetic field, the more energy from the solar wind ends up in the Earth’s upper atmosphere. Which probably gets distributed globally through winds and air circulation.
    http://www.newscientist.com/article/mg20227104.000-earths-protective-shield-is-stealing-our-air.html

    The solar wind itself might be heating Earth’s atmosphere more or less depending on variations in the strength of Earth’s magnetic field and the amount of solar wind produced by the Sun. And such variations could cause climate change on Earth, including global warming and the Ice Ages.

    • Nick,

      check and insure the studies are comparing apples to apples. I believe at least one of them looked at lower energy particles than what Svensmark considers a factor.

  4. Some recent studies didn't find any link between increased cosmic radiation and increased cloud formation.http://news.bbc.co.uk/2/hi/science/nature/73526…Perhaps geomagnetic field intensity affects global temperature change through a different mechanism. Until recently, everyone believed that Earth's magnetic field deflects and protects Earth from solar wind and coronal mass ejections. But now a new study has found that instead Earth's magnetic field collects solar wind over a much larger area than Earth's diameter and slams half of it around Earth's poles in a sling-shot kind of way with twice the energy of the original solar wind.http://www.newscientist.com/article/mg20126941….Which means that the amount of energy from the solar wind delivered to Earth's atmosphere varies with the amount of solar wind produced by the Sun and with the strength of the Earth's magnetic field. The stronger the Earth's magnetic field, the more energy from the solar wind ends up in the Earth's upper atmosphere. Which probably gets distributed globally through winds and air circulation. http://www.newscientist.com/article/mg20227104….The solar wind itself might be heating Earth's atmosphere more or less depending on variations in the strength of Earth's magnetic field and the amount of solar wind produced by the Sun. And such variations could cause climate change on Earth, including global warming and the Ice Ages.

  5. Nick,check and insure the studies are comparing apples to apples. I believe at least one of them looked at lower energy particles than what Svensmark considers a factor.

  6. Some recent studies didn't find any link between increased cosmic radiation and increased cloud formation.http://news.bbc.co.uk/2/hi/science/nature/73526…Perhaps geomagnetic field intensity affects global temperature change through a different mechanism. Until recently, everyone believed that Earth's magnetic field deflects and protects Earth from solar wind and coronal mass ejections. But now a new study has found that instead Earth's magnetic field collects solar wind over a much larger area than Earth's diameter and slams half of it around Earth's poles in a sling-shot kind of way with twice the energy of the original solar wind.http://www.newscientist.com/article/mg20126941….Which means that the amount of energy from the solar wind delivered to Earth's atmosphere varies with the amount of solar wind produced by the Sun and with the strength of the Earth's magnetic field. The stronger the Earth's magnetic field, the more energy from the solar wind ends up in the Earth's upper atmosphere. Which probably gets distributed globally through winds and air circulation. http://www.newscientist.com/article/mg20227104….The solar wind itself might be heating Earth's atmosphere more or less depending on variations in the strength of Earth's magnetic field and the amount of solar wind produced by the Sun. And such variations could cause climate change on Earth, including global warming and the Ice Ages.

  7. Nick,check and insure the studies are comparing apples to apples. I believe at least one of them looked at lower energy particles than what Svensmark considers a factor.

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