Are there connections between the Earth's magnetic field and climate?

  title={Are there connections between the Earth's magnetic field and climate?},
  author={Vincent Courtillot and Yves Gallet and Jean-L. Le Mou{\"e}l and Fr{\'e}d{\'e}ric Fluteau and Agn{\`e}s Genevey},
  journal={Earth and Planetary Science Letters},
Understanding climate change is an active topic of research. Much of the observed increase in global surface temperature over the past 150 years occurred prior to the 1940s and after the 1980s. The main causes invoked are solar variability, changes in atmospheric greenhouse gas content or sulfur due to natural or anthropogenic action, or internal variability of the coupled ocean–atmosphere system. Magnetism has seldom been invoked, and evidence for connections between climate and magnetic field… 

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