The two ice cores from Denali benefited from high levels of
snowfall, providing what Osterberg says is «amazing reproducibility» of the climate
record and giving the researchers exceptional confidence in the
study results.
The research is timely given the extreme winter of 2017 - 2018, including
record warm Arctic and low sea ice,
record - breaking polar vortex disruption,
record - breaking cold and disruptive
snowfalls in the United States and Europe, severe «bomb cyclones» and costly nor'easter s, said Judah Cohen, director of seasonal forecasting at AER and lead author of the
study.