An interpreted language implementation of the Vaganov-Shashkin tree-ring proxy system model

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Authors

Kevin Anchukaitis , Michael N Evans, Malcolm Hughes, Eugene Vaganov

Abstract

We describe the implementation of the Vaganov-Shashkin tree-ring growth model (VSM) in MATLAB. VSM, originally written in Fortran, mimics subdaily and daily resolution processes of cambial growth as a function of soil moisture, air temperature, and insolation, with environmental forcing modeled as the principle of limiting factors. The re-implementation in a high level interpreted language, while sacrificing speed, provides opportunities to systematically evaluate model parameters, generate large ensembles of simulated tree-ring chronologies, and embed proxy system modeling within data assimilation approaches to climate reconstruction. We provide a versioned code repository and examples of model applications which permit process-level understanding of tree ring width variations in response to environmental variations and boundary

DOI

https://doi.org/10.31223/osf.io/ruyad

Subjects

Climate, Earth Sciences, Environmental Sciences, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Keywords

paleoclimate, cambium, dendrochronology, dendroclimatology, forward model, MATLAB, proxy systems modeling, tree-ring, xylogenesis

Dates

Published: 2019-12-04 11:02

Last Updated: 2020-02-14 12:41

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License

CC BY Attribution 4.0 International

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