That 'no warming since 1998' bollocks meme.

I've had this blog post written but on hold for some months, I never seemed to have the mind to publish, but I've just stumbled upon someone claiming 'no global warming for 18 years', and it's moved me to post.

Mid July Status

This post is really a very late June Status Part 3 because my day job is crowding out this hobby, but rather than restrict to June PIOMAS data, I've added in some extent data to drag it into mid July. So, I'm sorry but that means it's dauntingly long, although I tried to keep the words to a minimum and let the graphs convey message.

June PIOMAS data, 2014 prediction - Correction.

This is a rewrite and re-issue of the blog post entitled June PIOMAS data, 2014 prediction revised upward.

Due to increased workload in my day job I've been working late while tired, and in rushing to make the July Sea Ice Prediction Network submission date, I made an error in the spreadsheet. So my 4.7M to 5.1M km^2 prediction was wrong. By now I've missed the deadline and this morning emailed SIPN to ask that my submission be withdrawn as I wouldn't have the chance to re-write it.

The data I provide derived from PIOMAS gridded data has now been updated for June. Daily gridded data has not been updated this month, so the daily regional volume file is not updated. Data are available from this blog post, which also explains the data.

For those who have already read the original post, scroll down to the heading Correction.

June Status: Part 2.

This is filler post before we get the PIOMAS data. Wipneus has calculated regional breakdowns of NSIDC extent based on their gridded data, something I started doing but couldn't work out the correct ocean masking to use. Anyway that issue has been solved, Wipneus has been doing the number crunching and has let me have the data.

June Status: Part 1

Crucial to what I think will happen later this season is the PIOMAS data, as I wait for that the NCEP/NCAR data is now updated, and of course we have extent and area data. So here's the situation over June.

Watch this space. Part 2.

Back on the 11 June this year I drew attention to a large polnya in the Laptev Sea and suggested it was likely to play a large role in the 2014 melt season. With data available through to 30 June it's time to see how it's going.

2014 is not being handed its hat, it's just getting started.

Hadden: The powers that be have been very busy lately, falling over each other to position themselves for the game of the millennium. Maybe I can help deal you back in.

Ellie: I didn't realize that I was out.

Hadden: Oh... maybe not out, but certainly being handed your hat.

 Contact 1997.

Since posting my rather high prediction on CT Area I've been having doubts about it. A reason to to have confidence in it is the success last year, against the expectations of many including myself. However this year I think CT Area will be at the lower end of the prediction (3.0 to 3.3M km^2), if it is successful, and there is too much of a chance of 2014 being below 3.0 for me to have much confidence in it. The method trains the range to the 2007 to 2013 period, so it is likely overfitted and does not reflect the full range of feasible behaviours after the volume loss events of 2007 and 2010.