“Where’s the sea ice?” Right where it’s been for most of the Holocene.

Guest “geological perspective” by David Middleton This is sort of a sequel yesterday’s post: Where’s the sea ice? 3 reasons the Arctic freeze is unseasonably late and why it matters.…

What if there is no Climate Emergency ?

Reposted from edmhdotme What if there is no Catastrophic Risk from Man-made Global Warming ? What if Man-made CO2 emissions are not the “Climate Control Knob” ? What if Man-made…

Back to the Anthropocene! Arctic Sea Ice Edition

Guest geological story-telling by David Middleton Do you ever get tired of smarmy, snot-nosed articles like this? Obituary: Remembering the Holocene Epoch BY CHRIS WILSON AUGUST 29, 2016 The Holocene…

What if there is no Climate Emergency?

Reposted from edmhdotme What if there is no Catastrophic Risk from Man-made Global Warming ? What if Man-made Climate Change really is a non-problem ? But what if there is…

Another Dis-alarming Analysis of Arctic Sea Ice

Guest post by David Middleton Anthony recently posted an excellent Arctic sea ice analysis by Ron Clutz.  In a similar vein, I decided to look at Arctic sea ice from…

The truth about 'We have to get rid of the medieval warm period'

In the thread Intelligence and the hockey stick commenter “Robert” challenged a well known quote about the MWP from 2006 by Dr. David Deming in his statement before the Senate EPW…

New paper shows Medieval Warm Period was global in scope

Andrew Revkin writes: Michael Mann can’t be happy about this work. Here’s a chat with two authors of an important new Science paper examining 10,000 years of layered fossil plankton…

Global Warming = Climate Change

Guest Essay by Ed Hoskins This short essay questions the actions to combat Global Warming / Climate Change from three points of view: The Temperature Context Man-made CO2 emissions 1965…

Those who don't learn from Yamal, are condemned to repeat it – Marcott’s YAD061

You’d think academics in the upside down Mann climate proxy world would pay attention, and not repeat the same mistakes of the past. Apparently not. WUWT readers surely recall the…

Evidence for a Global Medieval Warm Period

From CO2Science: Medieval Warm Period (Antarctica) — Summary Was there a Medieval Warm Period somewhere in the world in addition to the area surrounding the North Atlantic Ocean, where its…

Marcott issues a FAQ on their paper

This is from Real Climate, who played the “he who must not be named” game again in not pointing out criticisms. Gavin dissapoints. UPDATE: McIntyre responded earlier today with The…

Where's the hockey stick? The 'Marcott 9' show no warming past 1950

More on the Marcott et al “hockey stick”. All of the ‘Marcott 9’ had altered dates. Guest post by John Kehr While it took me a while to get the…

Marcott's uptick – a result of proxy sign inconsistency

Shades of upside down Tiljander. McIntyre is delving further into the Marcott proxy issue and it looks almost certain now there’s a statistical processing error (selection bias). Steve McIntyre writes:…

Tick, tick, tick – how long will the new Marcott et al hockey stick survive?

Steve McIntyre writes of the curious uptick in the 20th century, which doesn’t seem to be rooted in reality, or to have been in Marcott’s PhD thesis: While one expects…

Another Hockey Stick?

Guest post by S. Fred Singer Green forces, eager to promote their theories of global warming, appear to be practicing intellectual recycling.  Is this the return of the notorious hockeystick…

Marcott's proxies – 10% fail their own criteria for inclusion

Note: Steve McIntyre is also quite baffled by the Marcott et al paper, finding it currently unreproducible given the current information available. I’ve added some comments from him at the…

Validity of Marcott et al. PART II

Validity of Marcott et al. contention that “Global temperatures are warmer than at any time in at least 4,000 years” and “Global temperature….. has risen from near the coldest to…

A Simple Test of Marcott et al., 2013

Guest Post by David Middleton The Gorebots are all atwitter about this new paper… Science 8 March 2013: Vol. 339 no. 6124 pp. 1198-1201 DOI: 10.1126/science.1228026 A Reconstruction of Regional…

Validity of “A Reconstruction of Regional and Global Temperature for the Past 11,300 Years”

It seems that Marcott et al isn’t all that it is cracked up to be. Dr. Easterbrook takes a good hard look at the paper. Guest post by Dr. Don…

Marcott et al claim of 'unprecedented' warming compared to GISP ice core data

The very first sentence of the Marcott et al (which is getting heavy press) abstract says: Surface temperature reconstructions of the past 1500 years suggest that recent warming is unprecedented…

New study: Ocean-driven warming along the western Antarctic Peninsula needs to be considered as part of a natural centennial timescale cycle of climate variability

From Cardiff University: Tiny fossils hold answers to big questions on climate change Research explores 12,000 year fossil record The western Antarctic Peninsula is one of the fastest warming regions…

Now if we could only get them to stop using the "D" word, they might actually communicate better

From the University of Missouri: Public Acceptance of Climate Change Affected by Word Usage, Says MU Anthropologist Better science communication could lead to a more informed American public. Public acceptance…

New paper demonstrates that climate responds to short and long-term changes in solar activity

(Via the Hockey Schtick) A new peer reviewed paper published in The Holocene finds a significant link between solar activity and climate over the past 1000 years. According to the…

On certainty: Truth is the Daughter of Time

This comment from Dr. Robert Brown at Duke University is elevated from a comment to a full post for further discussion. Since we have a new paper (Shepherd et al)…