Photo Friday: Arctic Sea Ice Extent Reaches a New Low

As global warming continues, Arctic sea ice broke the record this year, reaching a new low extent for the month of January. January is typically a month of relatively large sea ice extent, with the annual maximum occurring between February and April. A low sea ice extent in January suggests that the annual maximum, coming in a month or so, will also be low.

Temperatures across most of the Arctic Ocean were around 13 degrees F (6 degrees C) according to a recent report.  This was due to Arctic Oscillation, a cyclical pattern of atmospheric pressure in the Northern Hemisphere. The Arctic Oscillation has entered into a negative phase during the first few weeks of the month according to National Snow and Ice Data Center (NSIDC). Under such an impact, warmer air would extend further north.

The ice extent retreating in Arctic might have some correlated effects on Antarctic ice shelves. Antarctic sea ice extent also was below average in January, although it just hit the record of reaching a maximum extent in 2014 according to a NASA report. In general, the Arctic sea ice is decreasing, and yet the Antarctic ice continues to grow despite the ocean around it is warming. 2015 is the hottest year on record according to researchers. Would it be the last straw to end the growing trend of Antarctic ice shelves?

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