We've seen this one before but it's worth another look because it shows so
clearly the reason for the sea ice decline. This version has a slightly better
commentary. Best viewed full screen.
https://twitter.com/NOAAClimate/stat...80990559850497
--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
http://peakdistrictweather.org
@TideswellWeathr