Shock News! Mail on Sunday Silently “Corrects” Another David Rose “Porky Pie”

In our latest astonishing disclosure concerning David Rose’s optimistically named “Climategate 2” campaign in the Mail on Sunday in February we can now reveal the Mail’s botched attempt to cover up another “inadvertent” error in Mr. Rose’s February 19th article entitled “US Congress launches a probe into climate data that duped world leaders over global warming“.

In actual fact it’s the US Congress that’s being duped. Perhaps Lamar Smith, Chairman of the House Committee on Science, Space and Technology, would like to play “spot the difference” with us? Here’s an extract from the original article:


and here’s the same section of the allegedly “corrected” article.


One of Mr. Rose’s “porky pies” concerning a statement supposedly made last month by Peter Stott from the UK Met Office has gone missing. There’s no apology or explanation in either the online or print version of the apology for a “correction” issued by the Mail on Sunday at the weekend.

Not only that, but an entire paragraph concerning the alleged “pause” has evaporated into thin air.

Not only that, but the alleged “correction” included below the offending article is different to the “official” version published in print at the weekend. Take another look:


Something is rotten in the state of MayBeLand. And in the state of TrumpLand too.

Don’t Panic! It’s Just Another Climategate 2 Correction!!

Regular readers will be aware that the alleged “Global Warming Policy Forum” recently published what they describe with tongue in cheek as a “correction” to one of the many egregious inaccuracies published on their web site recently.

Last night the Mail Online web site followed suit by publishing an excuse for a “correction” to the self same egregious inaccuracy published on February 19th 2017 as part of David Rose’s self christened “Climategate 2” campaign in the Mail on Sunday. Here’s how I announced that momentous event to the waiting World:

and here’s how that version looked in virtual print last night:


Now in actual fact I reported this particular inaccuracy to David Rose’s managing editor at the Mail on Sunday weeks ago. This morning I rushed down to the local paper shop to discover how the Mail’s apology for a “correction” looked in actual print. I searched in vain for a “climate change” story or even a “science” story with which it might have been associated, but I failed miserably.

I eventually located it hiding at the bottom of a story entitled “Troops trained by modern day Captain Mainwarings… at Barclays Bank HQ“, which looks like this:



They are an elite fighting force with proud history and a fearsome reputation for being among the toughest soldiers in the British Army.

But now, in an extraordinary military first, a battalion of the crack Parachute Regiment are to receive key aspects of their training from Barclays Bank.

The astonishing scheme has echoes of the classic sitcom Dad’s Army, in which hapless bank manager Captain Mainwaring attempted to whip his platoon into shape.

What a picture of Arthur Lowe has to do with that story, or “Climategate 2” for that matter, escapes me but nonetheless beneath that load of “investigative” churnalism the printed version of the Mail’s alleged “correction” looks like this:


One of the numerous problems with the Mail and the GWPF’s version of these recent events is that none of the UK Met Office insiders I have contacted have any idea what the Mail might be blathering on about:

Snow White’s very good friend Alice F. with her planet-wide patent pending hyper-sensitive wetware alternative facts detector is now on the case:

Alice's brain

Have no doubt about it. Alice’s little grey cells will get to the bottom of this mystery.

Watch this space!

That Deaf, Dumb and Blind Kid Sure Plays a Mean ClimateBall™

Our old friend Tony Heller has been publishing a glorious Gish gallop of articles showing OSI-SAF Arctic sea ice type maps and claiming amongst other things:

103% Increase In Multi-Year Sea Ice Since 2008” and

Extent Of Multi-Year Sea Ice At Ten Year High” and

Multi-year Arctic Sea Ice Extent At Ten Year High” and

Multi-Year Arctic Sea Ice Continues At Ten Year High“.

The most recent episode in the long running series is entitled “Multiyear Ice Extent up 116% Over The Past Decade“, wherein Tony claims that:

A decade after declaring the end of Arctic multi-year sea ice, it has increased 116% and now covers nearly half of the Arctic.

That is of course not true. In actual fact it’s an “alternative fact” par excellence!

I have been endeavouring to point out to Tony the error of his ways for weeks now, but my words have wisdom have fallen on deaf ears. My graphic graphics have been viewed only by “snow blind” eyes. My incontrovertible arguments have been misapprehended by purpose built dumb and dumberer wetware illogic. By way of example, here’s a refreshingly ad hom free riposte from a typical commenter:

Jimmy Boy actually thinks his honesty and integrity are equally to that of Anthony Watts???


No doubt we’ll get around to discussing Anthony Watts “honesty and integrity” again soon, but for now let’s see if we can finally set this particular badly warped record straight shall we?

Here is the latest OSI-SAF ice type map, for March 16th 2017:


The highlighted area on the left is the Beaufort Sea to the north of Canada. If you’re not “snow blind” you can no doubt readily perceive a large area of allegedly “multi-year sea ice” coloured white. Let’s now take a look at the most recent Canadian Ice Service map of the same area, for March 13th 2017:

Canadian Ice Service sea ice stage of development on March 13th 2017
Canadian Ice Service sea ice stage of development on March 13th 2017

Can you see a large area of brown “old ice” covering most of the surface of the Beaufort Sea?

Now let’s take a look on the other side of the Arctic at the area north of the Barents Sea. Can you see a large area of allegedly “multi-year sea ice” coloured white inside the red ellipse on the OSI-SAF map? Next let’s take a look at the most recent University of Bremen SMOS map of the Arctic, for March 15th 2017:


On this map the brightly coloured areas show sea ice that’s less than 50 cm thick. Even when two people explain this point slowly to them the “deplorable denizens” at Mr. Heller’s blog do not manage to get the message! So now let’s look at a closeup comparison between the OSI-SAF ice type map and the University of Bremen SMOS sea ice thickness map:


As I popped the question to the deplorable denizens over on Tony Heller’s Deplorable Climate Science blog:

For anybody else here who isn’t deaf, dumb and blind, please note all the young, thin sea ice around Svalbard identified by SMOS that OSI-SAF currently classifies as “multi-year” ice.

At the risk of (repeating myself)^n, n → ∞:
Why do Tony, Tommy and Andy persist with this nonsense?

We won’t get fooled again! Will we?

Is Arctic Ice Loss Driven by Natural Swings?

An interesting new paper on Arctic sea ice has just been published. According to the conclusions of “Influence of high-latitude atmospheric circulation changes on summertime Arctic sea ice“:

Although positive feedbacks between sea ice and the Arctic circulation exist, we find that these are small during summer. Instead, circulation variations over the Arctic have been a significant factor in driving sea-ice variability since 1979, and have had a non-trivial contribution to the total surface temperature trend over Greenland and northeastern Canada39 . The potentially large contribution of internal variability to sea-ice loss over the next 40 years reinforces the importance of natural contributions to sea-ice trends over the past several decades. The similarity of high-latitude circulation variability associated with sea-ice loss to the teleconnections with the tropical Pacific suggests a contribution of sea-ice losses from SST trends across the tropical Pacific Ocean. Decadal trends in the hemispheric circulation are an important driver of Arctic climate change, and therefore a significant source of uncertainty in projections of sea ice. Better understanding of these teleconnections and their representation in global models under increasing greenhouse gases may help increase predictability on seasonal to decadal timescales.

As you may already be able to imagine, this paper (PDF as submitted) is already the source of considerable controversy! Firstly let’s take a look at an overview of the paper from the University of Washington, entitled “Rapid decline of Arctic sea ice a combination of climate change and natural variability”:

“The idea that natural or internal variability has contributed substantially to the Arctic sea ice loss is not entirely new,” said second author Axel Schweiger, a University of Washington polar scientist who tracks Arctic sea ice. “This study provides the mechanism, and uses a new approach to illuminate the processes that are responsible for these changes.”

[First author Qinghua] Ding designed a new sea ice model experiment that combines forcing due to climate change with observed weather in recent decades. The model shows that a shift in wind patterns is responsible for about 60 percent of sea ice loss in the Arctic Ocean since 1979. Some of this shift is related to climate change, but the study finds that 30-50 percent of the observed sea ice loss since 1979 is due to natural variations in this large-scale atmospheric pattern.

Now let’s take a look at another overview of the paper, this time from Roz Pidcock at Carbon Brief and entitled “Humans causing up to two-thirds of Arctic summer sea ice loss, study confirms”:

Rising greenhouse gas emissions are responsible for at least half, possibly up to two-thirds, of the drop in summer sea ice in the Arctic since the late 1970s, according to new research. The remaining contribution is the result of natural fluctuations, say the authors.

The paper, published today in Nature Climate Change, confirms previous studies which show how random variations in the climate have acted to enhance ice loss caused by rising CO2.

Importantly, the authors state clearly in the paper that their work does not absolve human activity as a driver of Arctic sea ice loss. A News and Views article that accompanies the paper, by Dr Neil Swart from Environment and Climate Change Canada, adds:

“The results of Ding et al. do not call into question whether human-induced warming has led to Arctic sea-ice decline — a wide range of evidence shows that it has.”

There has already been much debate about the paper on Twitter! Here’s the “scientific” edition:


and here’s the “skeptical” edition:


Needless to say Anthony Watts swiftly stepped up to the plate on the “skeptical” side of the “debate” with a guest article on his blog by David Middleton entitled “Arctic ice loss driven by natural swings, not just mankind: study” which begins by quoting a similarly titled Reuters article by Alister Doyle:

FILE PHOTO: An undated NASA illustration shows Arctic sea ice at a record low wintertime maximum extent for the second straight year, according to scientists at the NASA-supported National Snow and Ice Data Center (NSIDC) and NASA. NASA/Goddard's Scientific Visualization Studio/C. Starr/Handout via Reuters/File Photo
FILE PHOTO: An undated NASA illustration shows Arctic sea ice at a record low wintertime maximum extent for the second straight year, according to scientists at the NASA-supported National Snow and Ice Data Center (NSIDC) and NASA. NASA/Goddard’s Scientific Visualization Studio/C. Starr/Handout via Reuters/File Photo

Natural swings in the Arctic climate have caused up to half the precipitous losses of sea ice around the North Pole in recent decades, with the rest driven by man-made global warming, scientists said on Monday.

The study indicates that an ice-free Arctic Ocean, often feared to be just years away, in one of the starkest signs of man-made global warming, could be delayed if nature swings back to a cooler mode.

Natural variations in the Arctic climate “may be responsible for about 30–50 percent of the overall decline in September sea ice since 1979,” the U.S.-based team of scientists wrote in the journal Nature Climate Change.

David embellished his article with some “humorous” asides such as:

This is the worst of the worst catastrophes in the world! Oh, it’s crashing … Oh, the humanity! Honest, I can hardly breathe. I’m going to step inside where I cannot see it.”

Please say it ain’t so!!!

“The melt of the Arctic is disrupting the livelihoods of indigenous peoples and damaging wildlife such as polar bears and seals while opening the region to more oil and gas and shipping.”

Eskimos, seals and polar bears!!! Oh My!!! And more oil and gas shipping!!! Aiiieeee!!!!
Eskimos, seals and polar bears!!! Oh My!!! And more oil and gas shipping!!! Aiiieeee!!!!

which some of us took exception to:

David – An Arctic indigenous person of my acquaintance asks me to tell you to “go f(r)@ck yourself”!

What should I reply on your behalf?

No answer has yet been received to that (im)pertinent question!

All this excitement in the Twittosphere and elsewhere leads one to wonder whether Ding, Schweiger et al. saw (or should have seen?) all this coming, and if so what might have been done differently? In any event this story is set to run and run and run and……


[Edit – March 18th]

I tried this Google search this morning:


38,000 results. We’re number 4. If you repeat the exercise please feel free to experiment with the search phrase(s) you employ. Make sure to only click on the link that leads you back here!

Watch this space.


Alternative Points of View – Scientific

William M. Connolley (AKA Stoat)

Without being able to pick any obvious holes I feel somewhat uncomfortable with that; the idea that September ice depends just on JJA circulation doesn’t feel at all right. Having decided that, though, they then run a variety of model experiments, for example “nudging” the circulation back to re-analysis, with and without an ocean-ice model underneath. And the result seems to be that it is mostly the circulation forcing the sea ice, rather than the sea ice changes forcing the atmosphere. This kinda-fits the “information flow” meme from way back so I should be prepared to accept that mostly. Having done that they then convince themselves that most of the circulation changes that matter to the ice are not GW forced, and so must be natural variability; and hence the conclusion. If you took all of this at face value then they’d have solved one of the puzzles, that on the whole models show much less ice decline that reality. But of course if the decline is substantially a freak of variation, not forced, that would fit.

The flaw in this overall, without looking at the details, is that it’s hard to see a near-40-year trend and being so much natural variability. That seems to be asking for an awful lot of one-way variation.


The Science Media Centre

Prof. Andrew Shepherd, Director of the Centre for Polar Observation and Modelling at the University of Leeds, said:

“According to this new research, the dramatic decline in Arctic sea ice that we have witnessed over recent decades is primarily due to anthropogenic (man-made) climate warming.

“Although this finding may not come as a surprise, being able to separate this from the effects of natural climate variability is an important step forwards, and paves the way for an improved understanding of what we should expect in future decades.”

Dr Ed Hawkins, Climate research scientist at the University of Reading, said:

“Recent summer Arctic sea ice extents have all been amongst the lowest on record but this is not necessarily all due to warming global temperatures – part of the sea ice decline is also because of changes in the atmospheric circulation.

“It is challenging to determine how much of the change in the circulation is itself due to warming temperatures, but this study suggests that a substantial fraction is due to natural fluctuations.

“Looking ahead, it is still a matter of when, rather than if, the Arctic will become ice-free in summer, but we expect to see periods where the ice melts rapidly and other times where it retreats less fast.”


Archived Alternative Points of View – “Skeptical”

Colin Fernandez at the Daily Mail

HALF of Arctic ice loss is driven by natural swings and not global warming, controversial study claims

  • Decline in ice cover due to ‘random’ and ‘chaotic’ natural changes in air currents
  • The rest has been driven by man-made global warming, scientists said


Colin Fernandez’ Daily Mail article reproduced at the “Global Warming Policy Forum

The Arctic icecap is shrinking – but it’s not all our fault, a major study of the polar region has found. At least half of the disappearance is down to natural processes, and not the fault of man made warming.

Part of the decline in ice cover is due to ‘random’ and ‘chaotic’ natural changes in air currents, researchers said.

The rest has been driven by man-made global warming, scientists said.

The research means that although it is widely feared that the Arctic could soon be free of ice, this could be delayed if nature swings back to a cooler cycle.


Colin Fernandez’ Daily Mail article reproduced at Mark Morano’s “Climate Depot

Study in journal Nature: HALF of Arctic ice loss driven by natural swings — not ‘global warming’


David Middleton at Anthony Watts’ “Watts Up With That

From the No Schist, Sherlock files…

Perspective: NSIDC Arctic Sea Ice Index Interactive Graph

The five earliest years of data plot near +2 standard deviations. The five most recent full years of data plot near or just outside of -2 standard deviations. Ding et al., 2017 conclude that up to half of the difference is due to the NAO and other natural climate fluctuations.


Paul Homewood at “Not a Lot of People Know That

Shock news! Scientists discover natural climate cycles.

Astonishingly though, the study makes no mention of the Atlantic Multidecadal Oscillation, which also has a significant effect on Arctic sea ice extent.

Since the late 1970s, the AMO has moved from the coldest point of its cycle to its highest, coinciding with a decline in Arctic sea ice coverage.


Patrick Michaels and Paul “Chip” Knappenburger at “The Cato Institute“:

Considering that the climate models are already performing poorly as it is, the new finding means that they are actually faring even worse than has been generally realized. And accounting for this strengthens the case for a lukewarming future from greenhouse gas emissions.

Ring up another strike against the climate models, and another reason why basing government policy on their output is a bad idea.

Shock News! Finally, the GWPF Corrects a Mistake!!

David Whitehouse has just published an article on the Global Warming Policy Forum web site entitled “How The Recent El Nino Saved Climate Models“.

The article itself is of course straight off the GWPF’s porky pie production line, but in the small print at the bottom there is this “Shock News!”:

Finally, we must correct a mistake. In February a scientist involved in the production of the HadCRUT4 global surface temperature data set told us what January’s figure was before its official publication. It turns out they were wrong, and we have corrected the graphs accordingly. Here is HadCRUT4, with its pause and recent El Nino peak.


When the HadCRUT4 data for 2016 was complete the MET Office estimated that 0.2°C was due to the El Nino. So here is that difference.


A scientist involved in the production of the HadCRUT4 global surface temperature data set told us that once again David Whitehouse is mistaken:

Can we now expect David Rose to issue an even more abject apology in next weekend’s Mail on Sunday?

Facts About the Arctic in March 2017

The February 2017 PIOMAS Arctic sea ice volume numbers are out. It’s no longer surprising to report that they are the lowest ever for the month of February in records going back to 1979:


Here’s the PIOMAS gridded thickness map for February 28th:


whilst here’s the latest CryoSat-2 thickness map:


and here’s the latest SMOS thickness map from the University of Bremen:


Lars Kaleschke suggests via Twitter this revealing SMOS thickness animation:

There does seem to be a small patch of slightly thicker ice in the East Siberian Sea off Chaunskaya Bay, but there’s still a much larger area of sub 0.5 meter thick ice in the Laptev and Kara Seas.

The Danish Meteorological Institute’s temperatures for the “Arctic area north of the 80th northern parallel” graph shows somewhat more “normal” readings in February 2017, but still without falling below the ERA40 climatology this year or in 2016:


The graph of cumulative Freezing Degree Days (FDD for short) is still far below all previous years in DMI’s records going back to 1958:


Finally, for the moment at least, here’s the high resolution AMSR2 Arctic sea ice area and extent:



I’m going to have to eat some humble pie, or crow pie as I gather it’s usually referred to across the Atlantic, following my tentative “2017 maximum prediction” a couple of weeks ago. Both area and extent posted new highs for the year yesterday, with area creeping above 13 million square kilometers for the first time this year.


[Edit – March 7th]

Commenter Michael Olsen suggests that “thicker ice being pushed into the Alaskan and Russian parts of the Arctic Ocean”. Here’s some evidence:

The United States’ National Weather Service current sea ice stage of development map for Alaskan waters:


This week’s Canadian Ice Service sea ice stage of development map is expected later today, so for now here’s last week’s:


and here’s the latest version:


Similarly this week’s Russian Arctic and Antarctic Research Institute ice chart is expected soon has been published:



[Edit – March 11th]

Especially for Michael, a visual image of all the “thicker ice [that’s been] pushed into the Russian parts of the Arctic Ocean” courtesy of the nice folks at NASA:

NASA Worldview “true-color” image of the Chukchi Sea on March 10th 2017, derived from the MODIS sensor on the Aqua satellite
NASA Worldview “true-color” image of the Chukchi Sea on March 10th 2017, derived from the MODIS sensor on the Aqua satellite


[Edit – March 12th]

Yet another strong Arctic cyclone has been battering the sea ice in the Arctic Basin. According to Environment Canada this one bottomed out at 971 hPa at 06:00 UTC today.


Not A Lot Of People Know How Paul Homewood Propagates Fake News About the Arctic!!

A couple of days ago we explained how Christopher Booker explained that blogger Paul Homewood:

Has drawn on official sources.. to uncover what is actually happening [in the Arctic]

Have we got news for you Christopher? That’s not how it works in the cryodenialosphere! Mr. Homewood’s article about Mr. Booker’s article about Mr. Homewood’s previous article(s) is littered with factual errors. This is what happens should you be foolish enough to attempt to correct such errors.

Here is what we typed into the comment section of Mr. Homewood’s blog:

Of course if Mr. Booker were to have considered Arctic sea ice volume he might have thought twice about his “there is even more of it today than in February 2006, and it is also significantly thicker.” remark?


Followed by:


When that failed to make an appearance:


When Ron Clutz sang the praises of MASIE yet again:


Here is what Paul Homewood cherry picked to publish to his loyal readership:


Can you spot the difference? Our juiciest cherries all ended up on Paul’s cutting room floor!

The 2017 Antarctic Sea Ice Minimum Extent

In 2017 Antarctic sea ice extent is beating all the records. All flavours of the metric are already below the minimum of all previous years in the satellite record, and it looks like there’s still some more melting left to go. Here’s the NSIDC’s 5 day averaged extent:


and here’s JAXA’s 2 day averaged version:


Finally, for the moment at least, here’s the current map of Antarctic sea ice concentration from the University of Bremen:



[Edit – March 12th]

It seems highly likely that the 2017 Antarctic sea ice minimum extent has now been reached. Here’s the NSIDC 5 day averaged extent graph:


The minimum extent of 2.106 million square kilometers was reached on March 3rd. Here’s the University of Bremen’s Antarctic sea ice concentration map for March 3rd:


Shock News! The Telegraph is Propagating Fake News About the Arctic!!

David Rose is mercifully quiet this weekend, but there’s no rest for the wicked! Christopher Booker in the Sunday Telegraph leads a bunch of the usual Alt-facts suspects in a barrage of fake news about our dearly beloved Arctic sea ice. According to Mr. Booker in the “Arctic Myths” section of his column today:

As the fake science of global warming continues to crumble, one scare story the zealots are determined to hold on to at all costs is their claim that ice in the Arctic is dangerously vanishing. Yet again lately we have been treated to a barrage of such headlines as “Hottest Arctic on record triggers massive ice melt”.

The nearest we got to such a headline here at the Great White Con was “Arctic Sea Ice News from AGU” in which article we showed images which said things like:


That’s because last year was the *hottest year on record in the Arctic! Undeterred by mere facts Mr. Booker continues:


But that ever-diligent blogger Paul Homewood has drawn on official sources such as the US National Snow and Ice Data Center to uncover what is actually happening. Under “Arctic Fake News”, on NotALotOfPeopleKnowThat, he posted a graph showing that last week the extent of sea ice was much the same as it has been at this date ever since 2001. Indeed, according to the Danish Meteorological Institute, there is even more of it today than in February 2006, and it is also significantly thicker. Back in 2008 much of the ice was only a metre thick. Today that has risen to two metres, and in some places four.

Mr. Booker appears to be more than somewhat confused, since this is what the DMI Arctic sea ice extent graph he links to reveals:


In addition the DMI thickness maps he refers to aren’t available at any of the places he mentions! Not a lot of people know that he was probably thinking of another recent article by Paul Homewood entitled “Arctic Ice Fake News“, which includes these two DMI thickness maps:



Even without considering other sources of Arctic thickness and/or volume data it is quite clear from the two volume graphs that according to the Danish Meteorological Institue Arctic sea ice volume is significantly lower this year than it was in 2008. If Arctic sea ice extent is greater this year and the volume is lower then the laws of physics (which not even the combined talents of Messrs Homewood and Booker can change) dictate that its average thickness must be LESS this year than in 2008!

Mr Booker blunders on:

The DMI data also show that the Greenland ice sheet, which we are told is melting at horrendous speed, is actually growing this year at a record rate, to a size way above its average for the past 26 years. And the most authoritative record of Northern Hemisphere snow cover shows this year’s ranking as one of the six highest since 1967.

He seems blissfully unaware that the “DMI data” to which he refers is the output of a DMI climate model that attempts to determine the “surface mass balance” of the Greenland ice sheet. He seems to think it’s a measurement of the mass of the Greenland ice sheet, which it isn’t. However this is, courtesy of NASA:


In his bubble of astounding Arctic ignorance Mr. Booker continues:

The Deplorable Climate Science blog, run by US expert Tony Heller, gleefully reproduces a 2007 headline: “Scientists: ‘Arctic is screaming’, global warming may have passed tipping point”. As Heller comments: “The Arctic is indeed screaming at climate scientists – to shut up.”

Now as luck would have it I have been (vainly!) attempting to persuade Mr. Heller “to shut up” on the very article Mr. Booker references! Let’s take a quick look at a couple of highlights shall we?

February 22, 2017 at 12:01 am

At the risk of repeating myself, need I say more?


It seems safe to assume that Mr. Booker wasn’t reading Mr Heller’s blog on or after February 22nd does it not? Otherwise he would surely have had second thoughts about writing such a ludicrous phrase as “there is even more of it today than in February 2006”?

Then of course there’s the burning question of the “Hottest Arctic on record”

February 22, 2017 at 5:59 pm

At the risk of (repeating myself)² AZ, here’s some “higher atmospheric air temperatures” for you:


If Mr. Booker had browsed Mr. Heller’s blog slightly more diligently he might even have seen this from the much maligned NOAA:

February 20, 2017 at 11:06 am

You seem to have forgotten about spring Gail? Here’s April:


Here’s the May graph from “the most authoritative record of Northern Hemisphere snow cover” for good measure:


To summarise, Messrs Booker and Homewood could have confined their due diligence on their assorted Arctic articles to reading my comments on Mr. Heller’s blog. Having done so it would quickly have become apparent to them that every single point they made was in actual fact a “fake fact”.

The inevitable conclusion is that they have no interest whatsoever in establishing the actual facts about the Arctic. All they are interested in is propagating “fake news” about the Arctic as far and as wide as possible in pursuit of a common “agenda”. As is David Rose.

* Since satellite records began.

The 2017 Arctic Sea Ice Maximum Extent

It’s far too early to be sure about this yet, but it’s not beyond the bounds of possibility that the 2017 maximum is already in place. Here’s our favourite high resolution extent graph calculated by “Wipneus” from University of Hamburg/JAXA AMSR2 data:


The current maximum Arctic sea ice extent for 2017 is 13.49 million square kilometers on February 19th. Here’s Arctic sea ice area for good measure:


The current maximum area for 2017 is 12.88 million square kilometers on February 20th. Here also is the NSIDC’s 5 day averaged extent:


This reveals a current maximum extent for 2017 of 14.302 million square kilometers on February 20th.


[Edit – March 1st]

Here are the high resolution AMSR2 area and extent graphs for the end of February:



With each day that passes the highs of February 19th/20th look more likely to have been this years maximum. Nonetheless past experience suggests it’s still far to soon to be sure about that.


[Edit – March 10th]

Arctic sea ice area and extent are declining again, having reached new heights for the year on March 3rd:



However the 2013/14 winter showed a late surge is still possible.


[Edit – March 18th]

A “late surge” is looking increasingly unlikely. That being the case, here is our provisional long term graph of NSIDC daily Arctic sea ice extent:


Subject to an unanticipated “surge” the 2017 maximum of 14.447 million square kilometers occurred on March 5th.

JAXA extent has dropped steeply over the last couple of days, and it is now once again “lowest for the date since records began”:


The 2017 JAXA maximum of 13.878 million square kilometers occurred on March 6th.

In the continuing absence of updates to Cryosphere Today area, here’s the high resolution Arctic sea ice area graph calculated by “Wipneus” from University of Hamburg/JAXA AMSR2 data:


The maximum for that particular metric was 13.03 million square kilometers on March 3rd.

Watch this space!