Tag Archives: law dome

New Antarctic Temperature Reconstruction

Nov 20, 2017 – 11:24 PM

Stenni et al (2017), Antarctic climate variability on regional and continental scales over the last 2000 years, was published pdf this week by Climate of the Past.  It includes (multiple variations) of a new Antarctic temperature reconstruction, in which 112 d18O and dD isotope series are combined into regional and continental reconstructions. Its abstract warns that […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , , , | Comments (24)

An Unpublished Law Dome Series

Jun 12, 2012 – 5:23 PM

Oxygen isotope series are the backbone of deep-time paleoclimate. The canonical 800,000 year comparison of CO2 and temperature uses O18 values from Vostok, Antarctica to estimate temperature. In deep time, O18 values are a real success story: they clearly show changes from the LGM to the Holocene that cohere with glacial moraines. On its face, […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , , , , | Comments (128)

Neukom’s South American Network

Jun 9, 2012 – 12:58 PM

In a figure that took considerable work, IPCC AR5 (First Draft) compared 5 regional proxy  reconstructions to model output.  In Australia, they used the Gergis (Neukom) et al 2012 reconstruction, In South America, they used a Neukom et al 2011 (Clim Dyn) reconstruction.  In 2011, Neukom refused to provide me with the data versions used […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged | Comments (30)

Gergis’ Two Medieval Proxies

Jun 3, 2012 – 10:27 PM

IPCC AR5 (First Draft) cited Gergis et al as follows: New paleo records from Australasia provide evidence of MCA warming around 1250–1330 CE, [my bold] somewhat later than maximum medieval warmth described from many Northern Hemisphere regions (Gergis et al., submitted). Following peak medieval warmth in the early 1300s, a cooling trend reaching a temperature […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , , , | Comments (52)

IPCC and the Law Dome Graphic

Apr 5, 2010 – 12:38 PM

Re-reading Climategate and AR4 Review Comments, I noticed an interesting discussion about handling the Law Dome O18 record – a series used in Mann and Jones (2003) and Jones and Mann (2004) with a very elevated MWP.

By Stephen McIntyre | Posted in climategate, IPCC | Also tagged , , , | Comments (44)

The Mysterious Taylor Dome Borehole

May 24, 2007 – 7:03 AM

Last year, one of the first things that puzzled me about the NAS panel report was the basis for their conclusion that there was no MWP in Antarctica. At the press conference, at about minute 60, North said: there is evidence of warmth in the record in the MWP. But as Bradley and Diaz a […]

By Stephen McIntyre | Posted in Antarctica, Archiving, NAS Panel | Also tagged , , , , | Comments (68)