Early Arctic Ice Minimum for 2019

Science Matters

The image shows Arctic ice thinning at the edges in the last 12 days up until day 249, when it appears to stabilize.  This would be an earlier minimum than average but comparable to some other years, including 2018.

The melting season in August and September up to yesterday shows 2019 below average but appearing to consolidate in the last few days.

Presently 2019 ice extent according to MASIE is 547k km2 below the 12 year average, having been 807k km2 in deficit just 7 days ago. The pace in recent days has flattened in comparison to the average, and is now matching where 2007 bottomed out. Another surprise is SII showing much more (~300k km2) ice extent than MASIE, and an even earlier bottom on day 247 compared to 249 for MASIE.  Note also that MASIE 2018 daily minimum was day 252.

It is also the case that most…

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