Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro

Lambert, Marius S. A.; Tang, Hui; Aas, Kjetil S.; Stordal, Frode; Fisher, Rosie A.; Fang, Yilin; Ding, Junyan; Parmentier, Frans-Jan W.

doi:https://doi.org/10.5194/gmd-15-8809-2022

Articles | Volume 15, issue 23

https://doi.org/10.5194/gmd-15-8809-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-15-8809-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 23

Development and technical paper

|

09 Dec 2022

Development and technical paper |

| 09 Dec 2022

Inclusion of a cold hardening scheme to represent frost tolerance is essential to model realistic plant hydraulics in the Arctic–boreal zone in CLM5.0-FATES-Hydro

Marius S. A. Lambert, Hui Tang, Kjetil S. Aas, Frode Stordal, Rosie A. Fisher, Yilin Fang, Junyan Ding, and Frans-Jan W. Parmentier

Supplement

https://doi.org/10.5194/gmd-15-8809-2022-supplement

Data sets

PAPER1: cold hardening scheme Marius S. A. Lambert https://doi.org/10.11582/2022.00028

Model code and software

PAPER1_CTSM CTSM Development Team https://doi.org/10.5281/zenodo.6559825

PAPER1_FATES FATES Development Team https://doi.org/10.5281/zenodo.6559840

Short summary

In this study, we implement a hardening mortality scheme into CTSM5.0-FATES-Hydro and evaluate how it impacts plant hydraulics and vegetation growth. Our work shows that the hydraulic modifications prescribed by the hardening scheme are necessary to model realistic vegetation growth in cold climates, in contrast to the default model that simulates almost nonexistent and declining vegetation due to abnormally large water loss through the roots.