Monday, January 12, 2009

Stalagmites support cosmoclimatology

In this weekly dose of the peer-reviewed skeptical literature about the climate, we look at some new evidence for cosmoclimatology.

In a news story called
The earth's magnetic field impacts climate: Danish study
AFP informs about a new article in the U.S. journal "Geology" by Mads Faurschou Knudsen and Peter Riisager (Denmark):
Is there a link between Earth's magnetic field and low-latitude precipitation? (full text paper, PDF)
The page with the abstract...

In the last 5,000 years of data, they found a strong correlation between
  • the Earth's magnetic dipole moment, as extracted from lava flows and burned archeological materials, on one side
  • and the amount of precipitation in the tropics, as extracted from Oxygen-18 inside the stalactites and stalagmites in Oman and China, on the other side.
The only plausible explanation of this correlation is Svensmark's mechanism of cosmoclimatology: the oscillating geomagnetic field regulates the amount of galactic cosmic rays that reach the lower layers of the atmosphere which subsequently influences the amount of cloudiness and precipitation (and temperature).

Both Earth's magnetic field and the Sun's magnetic field (and maybe even their relative orientation) arguably play important roles. The two new heretics avoided the immediate burning at stake by "acknowledging that CO2 plays an important role in the changing climate", too.

Well, they probably had to please the Alarmist Qaeda by this statement - even though, as you can check, there is not a single word about CO2 or global warming in their paper. As in all other cases, the statements about the importance of CO2 remain scientifically unsubstantiated.

1 comment:

  1. Lobos,

    This may be a little off the wall, but I am stuck trying to figure out what appears to be a relationship between the Earth geomagnetic field and O18 deposits in Antarctica.

    Oxygen has weak magnetic properties at low temperatures. Temperatures in the tropopause and the Antarctic appear to be low enough that oxygen can migrate more easily with a stronger field which could change the average origin of the O18 found in Antarctic cores.

    This may indicate that the estimated temperatures based on the O18 in the ice cores is more of an indication of the migration of the geomagnetic field and intensity than local temperature.

    In other words, it would be indicating changes in the tropical belt width and orientation.

    This could also impact the rate of CO2 deposited.

    Do you know of any relevant studies?