Tag Archives: Measurement of sea ice

On data losses -vs- geography in Cowtan and Way 2013: data dropout may account for most of the recent observed differences

At Climate Audit, Roman M. has a very interesting analysis that shows the surface grid cell losses from HadCRUT4 in C&W. It hones in on the issue of why the temperature differences from 2005 are much more significant than the … Continue reading

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Posted in Antarctic, Arctic, Cowtan & Way, Sea ice | Tagged , , , , , , , , | 57 Comments

Sea Ice News Volume 4 Number 6: Arctic sea ice has most definitely turned the corner – Maslowski is falsified

Plus notes on the ARCUS sea ice forecasting contest As I pointed out on September 16th in Sea Ice News Volume 4 Number 5: No ice free Arctic this year – it appears that Arctic sea ice has turned the corner … Continue reading

Posted in Arctic, Sea Ice News | Tagged , , , , , , , , | 157 Comments

JAXA timing worst ever – switching Arctic Sea Ice software, right as the minimum is about to happen

It looks as if we are about to see the turn in Arctic sea ice, and if so it will be earlier than last year. But right at that same time, JAXA has decided to switch horses mid-stream. They say … Continue reading

Posted in Arctic, Sea ice | Tagged , , , , , , , | 144 Comments

Sea ice extent linked to ocean currents – hindcast model works

UPDATE: Perhaps in response to criticism here, MIT has changed the press release wording. See below. From MIT, now if they could work the wind patterns in, as NASA suggests, we might have a clearer picture of why the Arctic … Continue reading

Posted in Arctic, Sea ice | Tagged , , , , , , , | 95 Comments

Sea Ice News Volume 3 #15 – Arctic sea ice doubles in October

In Sea Ice News #14, we noted that the Arctic refreeze was the fastest ever. According to NSIDC, Arctic sea ice extent doubled in October. Arctic rapidly gaining winter ice Ice extent doubled in October. The rate of increase since … Continue reading

Posted in Sea Ice News | Tagged , , , | 80 Comments

September Panics and Smurphy’s Law

A layman’s view of the strange period of history we are living through Guest post by Caleb Shaw During hot spells in the summer I often find it refreshing to click onto Anthony’s “Sea Ice Page,” and to sit back … Continue reading

Posted in Arctic, Sea ice | Tagged , | 195 Comments

Sea Ice News – Volume 3 Number 11, part 1 – new Arctic satellite extent record

PART1 – (part 2 comes later today is NOW ONLINE HERE) I’ve been noting with some humor the anticipation of a new Arctic sea ice extent minimum in the Alarmosphere. Yesterday, the frustration that there hasn’t been any major announcement … Continue reading

Posted in Sea Ice News | Tagged , | 203 Comments

ARCUS: July Sea Ice Outlook Published

WUWT comes in at the median value of 4.6 million square kilometers (they rounded up from our 4.55 submission) . It is important to note that even with the large losses in June, nobody who submitted to ARCUS is forecasting … Continue reading

Posted in Arctic, Sea ice | Tagged , , , , , , , | 29 Comments

July sea ice outlook submitted to ARCUS

The WUWT Extent Projection: 4.55 million square kilometers. Readers polled, 142 responded with 22.11% of responses in the range of 4.5 to 4.6 million square kilometers. 4.6 million sqkm  11.21%  (72 votes) 4.5 million sqkm  10.9%  (70 votes) This was almost … Continue reading

Posted in Arctic, Sea ice | Tagged , , , , , | 61 Comments

Sea Ice News Volume 3 Number 7 – The next ARCUS Sea Ice Outlook forecasting poll for 2012 is online

NOTE: Poll closes at 12PM PST, Thursday, July 5th. First, in case you missed it over the weekend, the WUWT Sea Ice page has gone through an upgrade. A number of new graphs and data sources were added that should … Continue reading

Posted in Sea Ice News | Tagged , , , , , , , | 79 Comments

Sea Ice News Volume 3 Number 6 – Sea Ice Outlook forecasting contest for 2012 is online

First some news on the status of the WUWT Sea Ice Page. The JAXA imagery, which has been DOA ever since the failure of the AMSRE instrument on the AQUA satellite is now operational again. The plot is below: JAXA … Continue reading

Posted in Arctic, Forecasting, Sea Ice News | Tagged , , , , , , , , | 47 Comments

NSIDC’s oops moment – uncoordinated changes make for an interesting 24 hours

Many of you are probably aware of some strange goings on over at The National Snow and Ice Data Center (NSIDC) with their Arctic Sea ice graph, specifically, this one here: You see, up until Tuesday morning, it looked like … Continue reading

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Sea Ice News Volume 3, #2

In today’s report Arctic Sea Ice on the rise again, presently in the range of normal levels Antarctic Sea Ice is at slightly above normal levels Why is early satellite data for Arctic and Antarctic Ice extent referenced in the … Continue reading

Posted in IPCC, Sea Ice News | Tagged , , , , , , , , , | 207 Comments

August ARCUS forecast poll – What will the September NSIDC Arctic minimum extent be?

Once again, I’m going to give WUWT readers an opportunity to make a forecast for submission, based on voting. See the poll at the end.  I’ll run this poll each month in the week before the deadline, and we’ll see … Continue reading

Posted in Arctic, Sea ice | Tagged , , | 136 Comments

July ARCUS forecast poll – What will the September NSIDC Arctic minimum extent be?

Once again, I’m going to give WUWT readers an opportunity to make a forecast for submission, based on voting. See the poll at the end.  I’ll run this poll each month in the week before the deadline, and we’ll see … Continue reading

Posted in Sea ice | Tagged , , | 92 Comments

Sea Ice News – Call for Arctic sea-ice forecasts, plus forecast poll

It has been awhile since I’ve done a sea-ice report. That said, not much of note has been going on in the sea-ice arena, we are in that time of year when all of the years converge into a tighter … Continue reading

Posted in Sea Ice News | Tagged , , , | 177 Comments

Sea Ice News #36 – Arctic maximum ice extent reached – NANSEN data disagrees with NSIDC’s on the claim of a tie with 2006-2007

Now we start the slow slide into the Arctic Ice Minimum, likely sometime in September. It is important to point out that there’s a lot of ice up there, and as illustrated by the images below, the losses at ICEmax … Continue reading

Posted in Sea Ice News | Tagged , , , , , | 153 Comments

Sea Ice News #35 – Less ice, more snow

This is NSIDC’s report, and since I’m on a road trip, I’m unable to do an in-depth analysis. However, the WUWT Sea Ice page has more, and you can draw your own conclusions from the data presented there. Here’s one … Continue reading

Posted in Sea Ice News | Tagged , , , | 77 Comments