Category Archives: Age-depth modelling

The three chronologies from Seebergsee

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

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

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?

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

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?

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

Posted in Age-depth modelling | Tagged , | Leave a comment