Understanding the Bipolar Impact of Heinrich Climate Variability.

A new study suggests that Heinrich-type climate variability, characterized by massive detritus layers in the North Atlantic, may have a bipolar impact and phasing, affecting both hemispheres simultaneously. The study analyzed ice core records from Greenland and Antarctica and found evidence of synchronized warming and cooling events during Heinrich stadials. The findings challenge the traditional view of the bipolar seesaw, which suggests that climate changes in one hemisphere are offset by opposite changes in the other hemisphere.