Arctic sea ice hits 2nd-lowest seasonal peak as scientists ring alarm bells

Arctic sea ice expands and contracts throughout the year, reaching a peak extent sometime during March, just as the sun rises above the North Pole. 

It shrinks back during the summer, on its way to an annual minimum during the month of September. As the climate warms, however, sea ice has declined, compared to past levels, during all seasons. But in recent years, climate scientists have become more concerned as they’ve seen what’s taking place during the Arctic winter, which had historically seen less of a climate change signal in the ice compared to other seasons

That’s not the case anymore. Scientists announced on Friday that sea ice reached a wintertime peak in 2018 that was only a smidgeon above 2017's all-time record low.  Read more...

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