How severely have volcanoes contaminated the atmosphere with sulfur particles in past millennia? To answer this question, scientists use ice cores, among others, as climate archives. But the results differ, particularly in some major volcanic major events of the past, depending on whether the cores come from Antarctica or Greenland. Atmospheric scientists from the GEOMAR Helmholtz Centre for Ocean Research Kiel and the Max Planck Institute for Meteorology in Hamburg have now found an explanation that could significantly improve the interpretation of ice cores. Their study was just published in the current issue of the internationally renowned Journal of Geophysical Research—Atmosphere.
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