Must have been marching, demanding more warmth..........
But back in reality.....where did all that cold come from?
At Start of 2015 Melt Season Arctic Sea Ice is in a Terrible State robertscribbler
Let me guess: global warming caused the cold.
Nah, unusual weather patterns.
In the above image, provided by
Climate Reanalyzer, we find a classic polar vortex disruption type pattern (a rather odd event for April, as both polar amplification and vortex formation have both tended to fade by this seasonal period) in which the cold core is essentially ripped in half by warm air invading from the south. In this case, we see a massive warm air flood emerging from Eastern Europe, Western Russia and the North Atlantic riding up and over the polar zone across a warm frontal boundary. This greater warm air influx is joined with a lesser one emerging off the Ridiculously Resilient Ridge pattern off the US and Canadian West Coasts and flooding up over Alaska and the Mackenzie Delta region of Canada.
The cold cores are thus shoved aside. One has fled to a dubious haven over Eastern Siberia. The second has taken a stronger hold over Greenland. For the Greenland region, surface winds have encircled the new, displaced, cold pool, generating a temperature boundary that is sharply visible in the anomaly map. The dangerous weather-wrecking “
Storms of My Grandchildren” Greenland melt and polar amplification pattern — featuring a Greenland cold pocket beside a meltwater-cooled North Atlantic zone surrounded by angrily warming regions.