Magnetic effect on CO₂ solubility in seawater: A possible link between geomagnetic field variations and climate

Abstract

[1] Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO 2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO 2 from the surface ocean than is emitted by subaerial volcanism. This figure is dwarfed in front of anthropogenic CO 2 emissions.

Transfer Entropy between South Atlantic Anomaly and Global Sea Level for the last 300 years

“…Other studies point out other possible mechanisms which explain this connection, such as the experimental result of Pazur and Winklhofer [2008]. They focus on the effect of the geomagnetic intensity on CO2 solubility in the ocean.…”

Earth’s Diminishing Magnetic Dipole Moment is Driving Global Carbon Dioxide Levels and Global Warming

“…Pazur and Winklhofer [16] examined the potential source for this apparent contradiction. They found that the solubility of air in sea water was 15% lower when the average static magnetic field was 20 μT compared to the typical 50 μT.…”

Anthropic Rock: a brief history

“…Eastland (1938Eastland ( -2007, have and are examining the technical and environmental aspects of advantageous modification of Earth's eponymous Van Allen radiation belts, discovered by James Van Allen in 1958 (Rodger et al, 2006). It is widely postulated that Earth's geomagnetic field strength modulates surface air temperature (Usoskin, 2005), the solubility of gaseous carbon dioxide in standard seawater laboratory samples (Pazur and Winklhofer, 2008), the ocean's seawater currents (Ryskin, 2009) and measurable electromagnetic control of crustal seismic activity (Chelidze and Matcharashvili, 2003).…”