Leo

Submarine data showing thickness of sea ice per Table 1 of reference provided after melting seasons.

Between 1958 to 1976 for all Regions of the Arctic Ocean the mean sea ice thickness after the melt season was 3.02 metres. The information was published in 2009 in a significant Journal.

http://onlinelibrary.wiley.com/doi/10.1029/2009GL039035/full

The reference has a number of citations unlike the reference you gave.

As stated your reference is just rubbish.

The flea’s constant search for liars and fraud-promoters, like Oreskes and Mann, should culminate in the nailing of climate fraud Michael Mann, who has run out of scurrilous ways to avert justice in his laughable Court case against Professor Ball, where he was stupid enough to impose on himself the impossible task of showing that he is not a fraud.The present state of the proceedings is summed up here:
“ Tim Ball (above, right) is expected to instruct his British Columbia attorneys to trigger mandatory punitive court sanctions, including a ruling that Mann did act with criminal intent when using public funds to commit climate data fraud. Mann’s imminent defeat is set to send shock waves worldwide within the climate science community as the outcome will be both a legal and scientific vindication of U.S. President Donald Trump’s claims that climate scare stories are a “hoax.”
As can be seen from the graphs below; Mann’s cherry-picked version of science makes the Medieval Warm Period (MWP) disappear and shows a pronounced upward ‘tick’ in the late 20th century (the blade of his ‘hockey stick’). But below that, Ball’s graph, using more reliable and widely available public data, shows a much warmer MWP, with temperatures hotter than today, and showing current temperatures well within natural variation.”
http://www.climatedepot.com/2017/07/05/fatal-courtroom-act-ruins-michael-hockey-stick-mann/
It would be appropriate if Mann incurred a criminal finding against him for his promotion of the climate fraud, and it would no doubt limit the fraud available for the flea to quote, and inflict on this forum

Mann was also stupid enough to sue Mark Steyn and others for defamation.
The action against Steyn’s co defendants has been struck out, but Steyn has applied to have the action against him hear by the Court.
While waiting for the hearing, he has written volume 1 of his book sbout the disrepute with which Mann is regarded in his profession.
The book has been published, and is available for purchase. The proceeds are assisting Steyn with legal expenses. It is available here if you wish to help a good cause:
https://www.amazon.com/22A-Disgrace-Profession-22-Steyn-editor/dp/0986398330/ref=as_li_ss_tl?s=books&ie=UTF8&qid=1482417009&sr=1-1&keywords=Steyn+disgrace+to+the+profession&linkCode=sl1&tag=steyn-20&linkId=19e34bc537199fe881f1c2d288a7c5c1

Leo

It is noticeable that you made no comment about my last reference which showed sea ice data going back to 1958 which completely debunked your earlier comments.

There have been several studies published in Journals confirming Dr Mann's hypothesis about the so called "hockey stick".
The matter has been discussed several times in the past.

The Barnes ice sheet of Baffin Island makes a mockery of the claims of deniers about past temperature; it being quite a recent discovery.

Film clip discussing temperature in medieval period:

https://youtu.be/AD16nCsvjqs

How does Dr Mann cherry pick research that he and his colleagues worked on? That is simply a most illogical comment.

What evidence is there of sea level rise in the medieval period?
The volume of water naturally rises through extra warmth; also, melting land ice causes a rise in sea level.

Please provide a reference displaying Dr Ball's graph in a peer reviewed Journal.
Where did Dr Ball obtain his pollen samples, and coral samples etc from to produce his graph?
What evidence has been left of storm surges during the medieval period?
What evidence has been left of rain bombs? Rain bombs are created through a warming atmosphere being able to carry more water vapour; as a result, huge amounts of rain can fall in a very short period causing severe flooding.

Leo, your the person who promoted the idea of a null hypothesis, so they are fair questions.

Leo

I read the Amazon blurb about Steyn's book; as stated previously there is subsequent research that has shown that arguments put out by deniers are wrong.

Quote from Science Advances:

"The climatic mechanisms driving the shift from the Medieval Warm Period (MWP) to the Little Ice Age (LIA) in the North Atlantic region are debated. We use cosmogenic beryllium-10 dating to develop a moraine chronology with century-scale resolution over the last millennium and show that alpine glaciers in Baffin Island and western Greenland were at or near their maximum LIA configurations during the proposed general timing of the MWP. "

http://onlinelibrary.wiley.com/doi/10.1002/2016GL072394/abstract

What do you think ("were at or near their maximum LIA configurations during the proposed general timing of the MWP. ") means?

From

http://advances.sciencemag.org/content/1/11/e1500806.full

A further study of Baffin Island shows how the Barnes Ice sheet was intact during the medieval period.

It is a bit of a nuisance when the Barnes ice sheet doesn't react as deniers say it should, quote:

"The results provide compelling evidence that the current level of warming is almost unheard of in the past 2.5 million years, according to the authors. Only three times at most in that period has the Barnes Ice Cap been so small, a study of isotopes created by cosmic rays that were trapped in rocks around the Barnes Ice Cap indicated."

http://www.colorado.edu/today/2017/03/20/last-remnant-north-american-ice-sheet-track-vanish

Site it was published, showing more references:

http://onlinelibrary.wiley.com/doi/10.1002/2016GL072394/abstract

The flea has found some liars who vindicate Mann’s fraud. He is good at finding climate liars. Mann does not share such confidence, as he has chosen to be dealt with for contempt of court, rather than produce his shonky paperwork for scrutiny before the Court. That great source of climate fraud, NOAA, has been exposed again for its fraudulent actions:
“the organisation that is the world’s leading source of climate data rushed to publish a landmark paper that exaggerated global warming and was timed to influence the historic Paris Agreement on climate change.
A high-level whistleblower has told this newspaper that America’s National Oceanic and Atmospheric Administration (NOAA) breached its own rules on scientific integrity when it published the sensational but flawed report, aimed at making the maximum possible impact on world leaders including Barack Obama and David Cameron at the UN climate conference in Paris in 2015.”

Read more: http://www.dailymail.co.uk/sciencetech/article-4192182/World-leaders-duped-manipulated-global-warming-data.html#ixzz4oNMJijq3
Follow us: @MailOnline on Twitter | DailyMail on Facebook
http://www.dailymail.co.uk/sciencetech/article-4192182/World-leaders-duped-manipulated-global-warming-data.html
This is a sample of the fraudulent nonsense in the article to which the flea has referred us:” "This is the disappearance of a feature from the last glacial age, which would have probably survived without anthropogenic greenhouse gas emissions," said Adrien Gilbert, a glaciologist”
A scientist making an assertion for which there is no supporting science .
What else would one expect from an ignoramus like the flea, who uses the ridiculous term “denier”, when the fraud promoters, like himself, can refer us to no science to be denied. Again, flea, I ask that you refer us to science which shows a measurable human effect on climate.
Mann’s gratuitous commission of contempt of court will not assist him in dealing with criminal proceedings on his climate fraud