A graph showing this year’s figures for area of global sea ice, in comparison with the same data for the past c. 40 years, was widely shared on Twitter yesterday, resulting in a lot of discussion and consternation. I’m not on Twitter (yet…) and picked this up from Terry McGlynn’s Facebook feed. The graph shows an anomalously low extent of sea ice compared with what we would expect at this time of the year, in fact a drop of about 25%.
As you can see, something looks to be seriously wrong. For more discussion about the graph, see this piece over at The Verge.
I’ve not discussed climate change much on this blog, it’s not my area of specialism and there are plenty of other good bloggers out there who are far more knowledgeable than I. But graphs like this are hugely worrying because they not only suggest that aspects of our climate may be at a tipping point where they change from one state/predictable pattern to another. That’s a concern on a global level, because it’s strong evidence for global warming. However the reduction in sea ice also has huge implications for the biodiversity that depends upon the ice.
If I hear any more news on this I’ll post it, but in the meantime it’s worth pondering whether perhaps the UK’s signing up for the Paris Climate Agreement this week is a bit too late. As my colleague Duncan McCollin put it: “we’ve broken the planet”. I hope he’s wrong.