Coupled multilayer canopy-permafrost model (CryoGrid) for the use with an individual-based larch vegetation simulator (LAVESI)

• Main Authors: Stuenzi, Simone Maria, Kruse, Stefan, Boike, Julia, Herzschuh, Ulrike, Westermann, Sebastian, Langer, Moritz
• Format: Software
• Language: English
• Published: 2021
• Subjects: Permafrost; Land surface model; CryoGrid; Lavesi; Boreal forest; Zakharov; permafrost; Siberia
• Online Access: https://zenodo.org/record/5119987; https://doi.org/10.5281/zenodo.5119987

CryoGrid is a land-surface scheme dedicated to modeling of ground temperatures in permafrost environments. Here, the one-dimensional land surface model (CryoGrid) is adapted for application in vegetated areas by coupling a multilayer canopy model (CLM-ml v0). This model setup is used to reproduce the energy transfer and thermal regime at a study site in mixed boreal forest in Eastern Siberia. The vegetation module forms the upper boundary layer of the coupled vegetation-permafrost model and replaces the surface energy balance equation used for common CryoGrid representations. The coupled model was first described in the following article which has been published in Biogeosciences: Stuenzi, S. M., Boike, J., Cable, W., Herzschuh, U., Kruse, S., Pestryakova, L. A., Schneider von Deimling, T., Westermann, S., Zakharov, E. S., and Langer, M.: Variability of the surface energy balance in permafrost-underlain boreal forest, Biogeosciences, 18, 343–365, https://doi.org/10.5194/bg-18-343-2021, 2021. The model code for this publication can be found here: https://doi.org/10.5281/zenodo.4317106 In a second publication, the model has been extended by a parameterization for deciduous forest to simulate the leafless state of deciduous-dominated regions outside of the short vegetative period in summer. A more realistic canopy structure is simulated by allowing fractional composition of deciduous and evergreen taxa within the simulated forest stand. Further, we have implemented a new relationship for phase partitioning of water in frozen soil (freeze curve): Stuenzi, S. M., Boike, J., Gädeke, A., Herzschuh, U., Kruse, S., Pestryakova, L. A., Westermann, S., and Langer, M. (2021). Sensitivity of ecosystem-protected permafrost under changing boreal forest structures. Environmental Research Letters, 16(8), 084045. https://doi.org/10.1088/1748-9326/AC153D. The model code for this publication can be found here: https://doi.org/10.5281/zenodo.4603668. Here, we have added the possibility to couple our model to a dynamic larch ...