As warming increases, record snowfall will tend to increase in areas/at times that are still cold enough to snow, because warmer air holds more moisture than cooler air. You'll tend to get the most snow when it's just barely cold enough to snow rather than rain. It may seem counterintuitive, but that doesn't make it false.
There will be periodic local episodes of record cold in a warming world, just like there would be periodic episodes of record high temperatures in a cooling world, because we've only been taking accurate temperature records for a century or so in most places, and weather has bigger variation than climate.
The sea ice recovered from an unusually severe melt the previous year, but it's still well below the 10-year average, I believe. The analogy I've used to explain this:
The mayors of Analogyville have been crooked the past several years. One stole $100 from the city, the next stole $200, the next stole $300, the next stole $1000, and the most recent one stole $500. Would you say that the mayors are getting better, because the most recent mayor stole less than his predecessor, or would you just say that the second-to-last mayor was unusually bad?
And all that cold perfectly fits the pattern of... a chaotic, "noisy" climate system, where the warming signal (while still solidly present) is less severe than normal year-to-year, place-to-place variations.
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