After all of the news about a minimum record ice extent last month, this is interesting. As we know when water loses its ice cover, it allows a lot of heat to radiate into space as LWIR. many predictied that as a result of the extra open ocean surface, we see a very fast refreeze in the Arctic. It appears they were right. In fact, this is the fastest monthly scale refreeze rate in the NSIDC satellite record going back to 1979.
Here’s JAXA data plotted to show what has happened:
From the blog sunshine hours, here’s an analysis using NSIDC data:
Today is day 291 in the Arctic. The minimum in 2012 was on day 260 – 31 days ago.
If you calculate the percentage of ice gained (the refreeze) 31 days after minimum, then 2012 is the fastest refreeze ever!
Arctic Sea Ice Extent has increased by 43.8% since the minimum was reached.
Extents are in millions of sq km.
Source: sunshine hours
Here’s the NORSEX plot and NSIDC plot compared:
See all the data on the WUWT Sea Ice Reference Page
In other news. I’ve been in touch with Bill Chapman at UUIC/Crysophere Today to point out this bug:
It turns out to be an accidental issue, and he says:
“I was using the script to generate a plot for a publication that wanted a U.S.-centric view and it looks like I forgot to put things back to the way they were originally.
I’ll have it fixed by tomorrows update.”
Stuff happens, no worries.