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James S.
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Thanks Jim! I use April 1 and September 1 to avoid influence of weather events near sea ice maxima and minima. Regrowth makes sense. Are there studies that characterize the factors influencing regrowth? If so, they would be valuable for climate models because their current treatment of sea ice is resulting in conservative predictions compared to observations to date.
Toggle Commented Sep 17, 2019 on PIOMAS September 2019 at Arctic Sea Ice
Yes, thank you Neven for the excellent summary! I suspect that GAC-2012 pulled warmer saltier water into the melt equation. The average data for April 1 and September 1 from JAXA show the climate trend. A simple extrapolation suggests an ice free arctic summer in the 2030/2040 time period. Years April Sept. delta 1980s 15.2 7.4 7.8 1990s 14.8 6.7 8.1 2000-04 14.6 6.1 8.5 2005-09 13.8 5.3 8.5 2010-14 14.2 5.0 9.2 2015-19 13.6 4.4 9.2 Does anyone have a reasonable idea what may slow this trend?
Toggle Commented Sep 17, 2019 on PIOMAS September 2019 at Arctic Sea Ice
I've been tracking this for awhile and thought folks might be interested. Data are from JAXA Arctic sea ice extent site--thank you again Neven for aggregating data sites! April 1 and September 1 values were used to avoid annual variations near maxima/minima. The decadal data (Sea ice extent x 10^6 km^2) are averages as reported by JAXA. Semidecadal data are medians. Years April Sept. delta 1980s 15.2 7.4 7.8 1990s 14.8 6.7 8.1 2000-04 14.6 6.1 8.5 2005-09 13.8 5.3 8.5 2010-14 14.2 5.0 9.2 2015-19 13.6 4.4 9.2 The interesting, dare I say alarming, observation is the growth in delta values between 1980s and present.
Toggle Commented Sep 2, 2019 on PIOMAS August 2019 at Arctic Sea Ice
DavidR, can you provide the source of that surface area-to-volume equation? Thanks! Jim
Toggle Commented Aug 12, 2019 on PIOMAS August 2019 at Arctic Sea Ice
Great post as always, thanks Neven! Off topic, but I heard the following piece yesterday and thought folks here would be interested. Sonifying the data drives home the point! https://ww2.kqed.org/science/2018/01/08/listen-1200-years-of-earths-climate-transformed-into-sound/ Jim
Toggle Commented Jan 9, 2018 on PIOMAS January 2018 at Arctic Sea Ice
The journal article is behind a paywall, but I saw this news article and thought it would be of interest to folks here. http://www.sciencemag.org/news/2017/04/warm-atlantic-waters-wage-new-assault-arctic-ice-below Also, thank you Neven for your posts and the aggregation of data sites under the ASI graphs link!
Toggle Commented Apr 11, 2017 on PIOMAS April 2017 at Arctic Sea Ice
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Nov 2, 2016