FDDs and Sea Ice Loss

At the end of my last blog post of the Slow Transition series I tagged on a comment and graph about Freezing Degree Days and CO2, I said I would need to think about it. Having been rather distracted by other matters it's taken some time for me to look at it. However I have now done so and in short I don't think CO2 is directly driving winter warming.

January Status: PIOMAS

January's PIOMAS data was released yesterday, it shows that the volume gain over 2012 has decreased massively. But does this really mean the increased volume of 2013/14 is going to go away within one winter?

January Status: Extent

In this first monthly status blog post of 2015 I'll be using a technique used last year in this post. But I will explain, so no need to go reading that post before you read this one. To be frank there isn't a great deal of demand from the data for anomalies, but it's as well for me to start using the technique as I will throughout this year.

A separate PIOMAS post will follow when that data is out.