Climate models have predicted this for years, but it’s never been observed… until now. Ars Technica discusses the issue in brief. For the non-physical geographers out there (of which I count myself), storm tracks are the mid-latitude storm patterns that bring most of the precipitation to the heavy population centers in the world. As the climate changes, these storm tracks should gravitate to the poles. Scientists have been using data from The International Satellite Cloud Climatology Project to attempt to track the movement of storm tracks. They note lots of issues with the data, but repeated sampling and analysis methods have shown a clear trend – the tracks are moving as predicted. On top of that, apparently we’ve lost 2-3% of our total cloud cover worldwide!
So what’s the takeaway from all of this? It seems to me that the issues with the data combined with the need to track this stuff in a more comprehensive and accessible way point to one major conclusion – we need more satellites to get more accurate and timelier data. It really doesn’t matter where you fall on the climate change issue. Better information can only lead to a more informed scientific community and public, which is always a good thing.