Category Archives: Uncategorized

Arctic Lake Sediments: Reply to JEG

Julien Emile-Geay (JEG) submitted a lengthy comment concluding with the tasteless observation that “Steve’s mental health issues are beyond PAGES’s scope. Perhaps the CA tip jar pay for some therapy?”  – the sort of insult that is far too characteristic of activist climate science.  JEG seems to have been in such a hurry to make this […]

PAGES 2017: Arctic Lake Sediments

Arctic lake sediment series have been an important component of recent multiproxy studies.  These series have been discussed on many occasions at Climate Audit (tag), mostly very critical.  PAGES 2017 (and related Werner et al 2017) made some interesting changes to the Arctic lake sediment inventory of PAGES 2013, which I’ll discuss today.

PAGES2017: New Cherry Pie

Rosanne D’Arrigo once explained to an astounded National Academy of Sciences panel that you had to pick cherries if you wanted to make cherry pie – a practice followed by D’Arrigo and Jacoby who, for their reconstructions, selected tree ring chronologies which went the “right” way and discarded those that went the wrong way – […]

Comey’s Mishandling of Classified Information

Recently, there has been controversy over allegations that former FBI Director Comey leaked classified information, an issue that I mentioned on twitter  a month ago. The recent news-cycle began with a story in The Hill,  leading to a tweet by Trump, followed by a series of sneering “rebuttals” in the media (CNN, Slate, Politico, Vanity Fair). […]

Does a new paper really reconcile instrumental and model-based climate sensitivity estimates?

A guest post by Nic Lewis A new paper in Science Advances by Cristian Proistosescu and Peter Huybers “Slow climate mode reconciles historical and model-based estimates of climate sensitivity” (hereafter PH17) claims that accounting for the decline in feedback strength over time that occurs in most CMIP5 coupled global climate models (GCMs), brings observationally-based climate […]

The effect of Atlantic internal variability on TCR estimation – an unfinished study

A guest article by Frank Bosse (posted by Nic Lewis) A recent paper by the authors Stolpe, Medhaug and Knutti (thereafter S. 17) deals with a longstanding question: By how much are the Global Mean Surface Temperatures (GMST) influenced by the internal variability of the Atlantic (AMV/AMO) and the Pacific (PMV/PDO/IPO)? The authors analyze the […]

How dependent are GISTEMP trends on the gridding radius used?

A guest post by Nic Lewis Introduction Global surface temperature (GMST) changes and trends derived from the standard GISTEMP[1] record over its full 1880-2016 length exceed those per the HadCRUT4.5 and NOAA4.0.1 records, by 4% and 7% respectively.  Part of these differences will be due to use of different land and (in the case of […]

Centenary of the End of the Battle of the Somme

November 18 marks the centenary of the end of the Battle of the Somme, an event that passed essentially unnoticed, though it was a seminal event in the development of modern Canada. Its carnage was over 1.1 million casualties from a combined population (both sides) of about 170 million. (For a scale, there have been approximately […]

The Destruction of Huma Abedin’s Emails on the Clinton Server and their Surprise Recovery

Despite extraordinarily intense coverage of all aspects of Hillary Clinton’s emails, all commentary to date (to my knowledge), even the underlying FBI Report, has paid little to no attention to the destruction of Huma Abedin’s emails, also stored on the Clinton server.  Further, even with the greatly increased interest in Huma’s emails arising from the discoveries […]

Was early onset industrial-era warming anthropogenic, as Abram et al. claim?

A guest post by Nic Lewis Introduction A recent PAGES 2k Consortium paper in Nature,[i] Abram et al., that claims human-induced, greenhouse gas driven warming commenced circa 180 years ago,[ii] has been attracting some attention. The study arrives at its start dates by using a change-point analysis method, SiZer, to assess when the most recent […]