Greenland experienced a "massive" ice melt on Wednesday, with enough melting to cover the US state of Florida in 2 inches of water, according to scientists. It was the third-biggest ice loss for Greenland in a single day since 1950, and followed warm air being trapped over the Arctic island by a change in atmospheric circulation patterns. Some 22 gigatonnes of ice melted on Wednesday alone, with 12 gigatonnes flowing to the ocean and 10 gigatonnes absorbed by the snowpack where it can refreeze. Scientists have warned that models used to project future ice loss do not capture the impact of changing atmospheric circulation patterns, meaning they may be underestimating the future melting of Greenland.