This image perfectly captures the current conditions on Greenland:
, on June 13, 2019. Olsen was on a sled retrieving oceanographic moorings and weather station equipment in northwest Greenland as he found himself surrounded by a shallow sea of meltwater. As the ice below melts and refreezes it seals up cracks and causes the water to stand on top of the vast extent of ice.
The recent extreme melting on Greenland is attributed to two high-pressure systems over Greenland. One of the high-pressure systems is the same system that caused an extreme heat wave in the southeast United States in late May. The team of climate scientists make regular trips to the Inglefield Fjord where they measure temperature and melt conditions, however, this year's melting early in the season has been unusually high.
and vice versa. This is a result of the NAO index and variation of low and high pressures from Greenland to western Europe.The figure above shows the median and typical range of melting across Greenland from 1981 to 2010. Compare this to the red line which indicates melting in 2019 thus far. You will notice the sudden spike in melting associated with these high-pressure systems and unusually warm temperatures in the past weeks.
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