EDIT Seriously I really do need a holiday, my brain is thinking about the next thing while I write about the first thing.
The Arctic Volume
maximum minimum is in September, but the
minimum maximum is in April, not in March. Not that it makes any difference to Juan's analysis - as the graph of monthly averages attached demonstrates.
2012 was clearly the lowest volume for just 3 months- August, September and October. From mid November 2016 to mid June 2017 volume was the lowest by far. (see 2nd attached graph)
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Data availability
The Polar Science Center @
http://psc.apl.uw.edu/research/projects/arctic-sea-ice-volume-anomaly/data/ publishes the monthly and daily volume data once a month. The daily data has to be extracted.
Wipneus does the same when he posts his analyses on the PIOMAS thread within "Arctic Sea Ice". Sometimes, if he gets the data, he does it mid-month as well. His data also includes a file of volume by individual seas. His data has to be extracted from a .gz file.
The daily data from the Polar Science Center is a 14,750 lines of daily data from 1979. Sorting that into a table for each year with year headings as in data from JAXA and NSIDC was a real pain. February 29th screwed up the algorithm.-aargh.
So on the PIOMAS thread I post once (or twice) per month an analysis or two using the same formats as for the daily JAXA postings.
ps: Lazy me wishes these scientists dumped the data into .csv files.