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Some studies show that the polar ice caps are shrinking, some say they are growing. Similarly, many glaciers are shrinking, while others are growing. The data appears mixed, at best. This is actually to be expected. The idea at that glaciers and ice caps move in lockstep is ludicrous. The earth is not a monolith, the are many reasons for local variations. Even within Antarctic sea ice, there is variation from place to place around the continent. Sea ice extent has increased somewhat in the eastern Ross Sea sector, while it has decreased in the seas around the Antarctic Peninsula. In short, Antarctic sea ice shows a nearly flat trend, but large-scale variations make the trend very inconsistent..
See Antarctic sea ice reaches record high, as Arctic hits 2014 minimum and further below, see the update for 2015, which shows the trend continuing.
Arctic sea ice extent for January was the third lowest in the satellite record. Through 2015, the linear rate of decline for January extent over the satellite record is 3.2% per decade. But, BBC News, news reports 14 December 2014 that Arctic sea ice volume holds up in 2014. "Arctic sea ice may be more resilient than many observers recognise. Two cool summers in a row have now allowed the pack to increase and then hold on to a good deal of its volume. And while the ice is still much reduced compared with the 20,000 cu km that used to stick around in the Octobers of the early 1980s, there is no evidence to indicate a collapse is imminent."
Nevertheless, many scientists say that
the rate of loss of winter Arctic ice is both substantial and a cause for
According to NASA, Antarctic Sea Ice Reaches New Record Maximum. Sea ice surrounding Antarctica reached a new record high extent this year, covering more of the southern oceans than it has since scientists began a long-term satellite record to map sea ice extent in the late 1970s. The upward trend in the Antarctic, however, is only about a third of the magnitude of the rapid loss of sea ice in the Arctic Ocean. From the start of satellite observations in 1979 to 2014, total Antarctic sea ice increased by about 1 percent per decade. For three consecutive Septembers from 2012 to 2014, satellites observed new record highs for winter sea ice extent. These highs occurred while the Arctic was seeing record lows.
Antarctic Sea Ice Officially Hits New Record Maximum. "Antarctic sea ice hit its annual winter maximum on Sept. 22, 2014 reaching a record area of 7.76 million square miles, the National Snow and Ice Data Center (NSIDC) announced. Antarctic sea ice extent for Sept. 22, 2014 was 7.76 million square miles. The orange line in the figure shows the 1981-2010 average extent for that day, and the black cross indicates the geographic South Pole. Click image to enlarge. Credit: National Snow and Ice Data Center.
That maximum extent was 595,000 square miles above the 1981-2010 average extent, the NSIDC said in a statement, and broke the consecutive records set in 2012 and 2013. The record had been expected and follows a trend over the last three years of anomalously high winter ice extents around the southernmost continent - a trend that provides a stark contrast to the inexorable decline of Arctic sea ice, which it's sixth lowest summer extent on record last month. (Seasons in the Northern and Southern Hemispheres run opposite each other.)"
Although this report was released in 2014, it has resurfaced in the news in November 2015 at the 2015 report came in and show the trend continued. See this page and look for this section:
2015 Antarctic Maximum Sea Ice Extent Breaks Streak of Record Highs
The sea ice cover of the Southern Ocean reached its yearly maximum extent on Oct. 6. At 7.27 million square miles (18.83 million square kilometers), the new maximum extent falls roughly in the middle of the record of Antarctic maximum extents compiled during the 37 years of satellite measurements - this year's maximum extent is both the 22nd lowest and the 16th highest. More remarkably, this year's maximum is quite a bit smaller than the previous three years, which correspond to the three highest maximum extents in the satellite era, and is also the lowest since 2008.
Then click read the full article for an interesting video on the subject by on e of the scientists.
In 46 years of records, more snow covered the Northern Hemisphere this
fall than any other time. It is a very surprising result, especially when
you consider temperatures have tracked warmest on record over the same
Data from Rutgers University Global Snow Lab show the fall Northern Hemisphere snow cover extent exceeded 22 million square kilometers, exceeding the previous greatest fall extent recorded in 1976.
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