The sea ice volume in September 2013 is 20% that of September 1979.
The sea ice volume in April 2013 is 65% that of April 1979.
David should listen to his own posted where Gore said in Dec 2009 that:
'some of the models project that there is a 75% chance that during some of the summer months the Arctic would be completely free of ice within 5 to 7 years. Others (Bob) says it will be 2030. We will find out’. By single quotes ( ‘ ‘) I mean approx quotes: could not find transcript.
David’s translation :" Six years ago he [Al Gore] boldly predicted that the arctic would be completely ice free in five years”. Errors in David’s statement includes:
- Dec 2009 is 4 years 5 months ago - not six years.
- Al Gore mentioned 5-7 years- not 5 years (that 5-7 years would be Dec 2014 - Dec 2016 {or really Sept 2015 - Sept 2017 in context of the next minimum} none of which we have reached yet)
- Gore discussed two predictions (one from “some models” and the other from “Bob") giving a range of scientific projections for an ice free Arctic - David mentions only 1 prediction (5-7 years) and does not mention 2030 (21 years).
- The first prediction was 75% chance- not a certainty.
- The first prediction was for “some summer months” - not “completely free" the whole year.
- Gore ends up with “we will find out” - not “boldly predicted”.
So come Sept 2017, if the sea ice volume is not zero, Gore’s most dire prediction would be falsified and by Sept 2030 if the sea ice volume is still not down to zero, David’s sarcasm would be justified. Actually I don’t think sarcasm is ever justified on such an important topic.
What is certain is that the Arctic Sea Ice Volume has already shrunk a great deal (80% reduction in Septembers).
David is just as bad at listening as he is in data analysis and science.
