Or it could be titled as the “DEATH SPIRAL REVEALED!”
This is a promised follow-up on an early post of mine Minimum Ice Extent . I used the same data as before, except, of course, it is including this year’s data. What I’ve done is a remedial examination of the ice extent in the month of September. The minimum is always in September, so I thought it would be useful to see how each September stacks up against the other recent Septemebers. The data can be retrieved here.
MS Excel does a tricky thing I haven’t yet been able to work around……… well, I haven’t tried very hard. But, displaying the dates causes the graph to render horribly, in that it automatically leaves space for the rest of the year after each September. So, they are simply numbered. 1-30 would be 2007, 31-60 would be 2008 and so on.
As we can see, even though 2011 was noticeably less than 2010, it still didn’t really come close to matching 2007, and was closer to 2008. So, the argument continues as to whether it is declining or not.
For those interested, the minimum dates for each year respectively were, 24th, 9th, 13th, 18th, and the 9th again.