Calibration of isotope delta measurements: overview of key ideas and problems - Juris Meija

Juris Meija

Metrology, National Research Council Canada

Calibration is often done by fitting a straight line. Everything appears trivial when we use two calibrators, although there are some surprises that make most of us uncomfortable. But what happens when we wish to use more than two calibrators? This presentation will outline a collection of key ideas that underpin calibration of isotope delta measurements - from mathematical implementation to practical problems - with examples from recent international activities. Attendees will even be given a free app that can do Bayesian errors-in-variables calibration!