Category Archives: Age-depth modelling

The three chronologies from Seebergsee

Posted on 22/01/2018 by richard telford

Accurate and precise chronologies are important for all comparisons of palaeoecological records. This is especially true for the validation of sub-decadal resolution reconstructions against instrumental data: a chronological error of only a year or two will seriously degrade the apparent … Continue reading →

Posted in Age-depth modelling, Peer reviewed literature | Tagged , | 2 Comments

The ‘New York’ principle of site selection

Posted on 03/10/2017 by richard telford

If I can make it there, I’ll make it anywhere. It’s up to you, New York, New York. Palaeoecologists typically try to choose sites where the environmental variable they want to reconstruct is likely an important, ideally the most important, … Continue reading →

Posted in Age-depth modelling, Peer reviewed literature, transfer function | Tagged , , | 6 Comments

OxCal and R

Posted on 19/11/2016 by richard telford

OxCal is perhaps the most powerful of the three main Bayesian age-depth modelling procedures, with many many options and the potential for building far more complicated than your typical palaeolimnologist needs to use. Unlike Bchron and Bacon, OxCal is not … Continue reading →

Posted in Age-depth modelling, R, Uncategorized | Tagged | 2 Comments

Did the floating bog quiver in the sunshine?

Posted on 09/03/2015 by richard telford

The current edition of The Holocene has a paper by Xu et al that reports a relationship between solar activity and millennial-scale failures of the Indian Summer Monsoon as recorded in peat deposits of Lake Xihu, southwestern China. Is this  robust evidence … Continue reading →

Posted in Age-depth modelling, Peer reviewed literature, solar variability | Tagged | Leave a comment

Private prosecutions as an alternative to publications

Posted on 09/12/2014 by richard telford

When you read a paper you disagree with, you have a number of options. The easiest is to shrug one’s shoulders and mutter darkly that nothing better could be expected from that lab. More productively, one can write a blog … Continue reading →

Posted in Age-depth modelling, Fake climate sceptics, Silliness | Tagged , | 2 Comments

Time to recalibrate those radiocarbon dates?

Posted on 09/11/2014 by richard telford

Radiocarbon dating is probably the most important dating technique for palaeoecological research in the late Quaternary. One complication with 14C dating is that the concentration of 14C in the atmosphere has changed over time due to, for example, solar-driven changes … Continue reading →

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