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Laser-based ice-core sampling for studying climate change

A new laser-based sampling system allows for higher depth resolution, enabling scientists to reconstruct continuous annual temperature changes thousands of years ago. The LMS system overcomes previous limitations in sampling ice cores, preserving critical oxygen and hydrogen isotopes needed to infer past temperatures.

SourceRIKEN·JournalJournal of Glaciology·DateSep 19, 2023

Dust transport in the upper levels of the atmosphere

A new study by researchers from the University of Oldenburg found that particles from central South America were the primary source of iron in the South Pacific during the last two glacial periods. The team's theory suggests that jet stream circulation picked up fine mineral particles on the east side of the Andes and transported them ...

SourceUniversity of Oldenburg·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateNov 21, 2022

The impact of extinction

New research links high levels of stratospheric sulfur to the Chicxulub impact, which ignited widespread fires and global cooling. The unique fingerprints in sulfur aerosols provide direct evidence for catastrophic climate change and cooling.

SourceSyracuse University·JournalProceedings of the National Academy of Sciences·DateMar 21, 2022