I read Bob Greenlee’s article of Feb. 16 and am writing to inform that while Antarctic sea ice shows some increase in area, the West Antarctic Ice Sheet is losing mass, resulting from climate change, so rapidly that the GRACE (measures gravity) satellite observes the change in just the decade or so that it has been up.
Other satellites show the ice loss by the rapid decrease in surface elevation and very rapid increase in velocity of ice flowing into the sea. These satellites also show rapid mass loss in the Greenland ice sheet . I have been researching Antarctica for a number of decades and am quite familiar with this subject.
Sea ice is at sea level, by the way. The West Antarctic Ice Sheet is about 5,000-feet elevation; East Antarctica is about 10,000-14,000 feet elevation and Greenland about 10,000. The ice shelves are floating.John C. Behrendt