Here is the latest update on global sea ice and the Greenland ice sheet, courtesy of the National Snow and Ice Data Center. Arctic sea ice
The image below from the Polar Science Center at the University of Washington shows the latest Arctic Sea ice volume anomaly with trend line (blue). Sea ice volume gives a more detailed look at the health of the sea ice compared to just the extent. Right now, the volume is on a pace to end up near 5th or 6th lowest on record (going back to 1979). The lowest volume was in 2012.
The NSIDC graph below shows the average sea ice extent in the Arctic for the month of July going back to 1979 with trend (blue). July 2014 averaged just over 8 million sq/km.
The chart below shows the most recent Arctic sea ice extent compared to the 1981-2010 average (black line) and the record low minimum year of 2012 (dashed line). It is highly unlikely that this season will challenge 2012, but 2014 could still end up in the top five lowest extents in the 1979-2014 record period.
Sea ice in the Antarctic (Southern hemisphere) region continues to be at record high levels. The NSIDC map below shows the July sea ice extents going back to 1979 with trend.
The graph below shows the latest up to date Antarctic sea ice extent compared to the record high year of 2013 and the 1981-2010 average (black line). There is a chance that another record high extent could be set later in September or October.
The last image below shows the Greenland ice sheet melt percentage for 2014 (red line) compared to the 1981-2010 average (blue dashed). Clearly, the melt extent trend for the summer of 2014 has been above average.
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