This spring in Alaska has been more like summer, or like the same season for somewhere much warmer. What it has not been like is the usual March and April above the Arctic Circle. The consequences are being felt in devastating effects on the local wildlife, but are taking a severe toll on humans as well.
In March the average temperature of Kotzebue, on the north-west coast, was -5ºC (23ºF), 12ºC or 21.9ºF above normal. The rest of northern Alaska was not far behind. The Alaska Climate Research Center (ACRC) reports this is 4.1ºC (7.4ºF) higher than the previous March record, and the majority of the state had its warmest March ever.
People from the rest of the world, used to temperatures without a negative sign in front, might think this sounds like an improvement, but the consequences have been severe for a region built on the confidence of when there will be ice.
Two people driving on the normally frozen Kuskokwim River fell through insufficiently thick ice with their snowmobiles and died of exposure, a third barely survived. Thankfully so far the number of deaths has been low, but many remote communities depend on supplies delivered via ice roads. Increasingly people may be forced to choose between starving and risking the stability of the ice. Meanwhile, sled dog races, including the famous Iditarod, have been canceled or rerouted.
The warmer temperatures are connected to, and partly resulting from, the loss of sea ice in the Bering Sea. On the other side of the Bering Strait, the same sea ice is the reason members of the world's largest walrus colony are dying falling off cliffs in one of the most harrowing moments of David Attenborough's new Our Planet series.
Climate change models have always predicted warming caused by increased greenhouse gases would be fastest at high latitudes. Changes brought about by natural causes such as extra sunlight would be greatest elsewhere.
And yet, as the overwhelming evidence the world is warming at unprecedented rates piles up, deniers are getting more shameless. Blogs, lobby groups, and even some mainstream news outlets have taken up claims the walruses Attenborough highlighted were killed fleeing polar bears, rather than in response to global warming.
The makers of the documentary have hit back, exposing the disgraceful lies being perpetrated. Not only does the film crew, who – unlike those who started the claims were actually there – say no polar bears were sighted, but we have multiple peer-reviewed studies showing walruses prefer to rest on sea ice, rather than land, and would not normally be on these cliffs.