Dynamic model driven by environmental conditions for oxygen and carbon isotopic composition at leaf-level (Leppä et al., 2022) and tracing their signal down-stem to tree rings at intra-annual resolution (Leppä, et al., 2026).
For example of model runs corresponding to Leppä, et al. (2026) see demo.ipynb
Note data use permissions of forcing and tree-ring isotope data in data/forcing_readme.txt and data/woodsections_readme.txt, respectively.
Leppä, K., Szejner, P., Angove, C., Young, G.H.F., Blokhina, O., Fagerstedt, K., Kahmen, A., Launiainen, S., Mo, L., Nelson, D.B., Richter, A., Sahlstedt, E., Schiestl-Aalto, P., Tang, Y., Rinne-Garmston, K.T. (2026) Interpreting inter- and intra-annual environmental signals in tree-ring δ18O using isotope-enabled model. Tree Physiology 46(4), tpag026. https://doi.org/10.1093/treephys/tpag026
Leppä, K., Tang, Y., Ogeé, J., Launiainen, S., Kahmen, A., Kolari, P., Sahlstedt, E., Saurer, M., Schiestl-Aalto, P., Rinne-Garmston, K.T. (2022) Explicitly accounting for needle sugar pool size crucial for predicting intra-seasonal dynamics of needle carbohydrates δ18O and δ13C. New Phytologist 236(6), 2044-2060. https://doi.org/10.1111/nph.18227