So, just because we read it on a blog seems to be standard fare these days I see...what is this fastest rate since 1979? It should be growing fast right now.
You folks can't spot the error in here?
However, the mean anomaly-- defined as the difference between the current area and the seasonally-adjusted average-- changes much slower, and generally varies by only 2-3 million square kilometers
A mean anomaly is not seasonally adjusted. A mean anomaly is the deviation from a long term average. You can have yearly anomalies, so the accumulated rainfall in one year is 500 mm, when the long term average is 590.2. Then you have an anomaly of -90.2 for that year. Or you can have monthly anomalies. What this blog has put forth is a seasonally adjusted mean anomaly, and that makes all the difference. Seasonally adjusted means you remove the signal, the very strong signal
, that is present in one year. You know, the tilt of the Earth that means the difference between 32°C in July and -15°C on New Years eve? So, they're comparing the growth in October, to the seasonally adjusted mean anomaly. October is a time when the ice is growing rapidly after the Arctic summer, and they're comparing it to a trend that has that signal removed.
Big freaking difference. Here's what the Arctic sea ice actually looks like right now.
Also, look at November. Quite a difference a month can make, no? Un-freaking believable. Or maybe it really is that believable to some people...