‘The planet as a whole is doing what was expected in terms of warming. Sea ice as a whole is decreasing as expected …’
By Summit Voice
FRISCO — Along with shifting wind patterns in the southern hemisphere, melting land ice may be contributing to recent record extents of floating sea ice around Antarctica. The melting ice and snow adds fresh water — which freezes morel easily — to the salty Southern Ocean, scientists said in a release this week, explaining the multi-year trend of expanding Antarctic sea ice.
But the increase doesn’t balance the loss of sea ice at the other end of the Earth. Arctic sea ice has declined by an average of 20,800 square miles per year; the Antarctic has gained ice at a rate of about a third of that, by an average of 7,300 square miles per year.
This week, the National Snow and Ice Data Center (NSIDC) reported that Antarctic sea ice extent set a new record high for daily extent: 20.11 million square kilometers (7.76 million square miles), the highest since satellite observations started in the late 1970s.
Arctic sea ice bottoms out; Antarctic sea ice hits new high
FRISCO — Even without remarkably warm weather patterns across the Arctic, summer sea ice dropped to the sixth-lowest extent on record this year, while at the other end of the Earth, sea ice around Antarctica swelled to a record extent.
Through 2014, Arctic sea ice has now been declining at a rate of 13.3 percent per decade relative to the 1981 to 2010 average. The ten lowest September ice extents over the satellite record have all occurred in the last ten years. Continue reading “Climate: Polar paradox?”→
FRISCO — Global warming deniers have long been using the observed expansion of Antarctic sea ice as a way to try and confuse the public about the reality of global warming, but some new research by scientists with the Scripps Institution of Oceanography at University of California San Diego suggests the rate of expansion is not as dramatic as reported.
FRISCO — While global warming deniers try to divert attention from the building climate crisis by pointing at record-high Antarctic sea ice extent, a new study suggests much of that ice will soon melt away.