SVMC — Qvidja Full Model Demo

diffSVMC's primary products are the differentiable SVMC ports in JAX and @hamk-uas/jax-js-nonconsuming. This page is the complementary WebR/Fortran reference demo: the full SVMC integration (P-hydro photosynthesis, SpaFHy water balance, YASSO20 soil C, and carbon allocation) running in the browser against the vendored Qvidja reference inputs used for the maintained SVMC v1.0.0 test case. Project GitHub repo → · View Fortran vs JAX comparison →

Reference Inputs & Model Settings

The fields below define the inputs to the simulation: replayed Qvidja forcing and management series, plus editable SVMC parameter values.

Run Window & Input Selection

Days

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PFT Use obs. LAI

Vegetation / hydraulics

conductivity psi50 (MPa) b alpha gamma rdark

Soil hydrology

soil_depth (m) max_poros fc wp ksat (m/s)

Carbon allocation

cratio_resp cratio_leaf cratio_root cratio_biomass harvest_index turnover_cleaf turnover_croot sla q10

YASSO20 soil carbon

initial SOC (kg/m²) C:N input fract root input fract legacy SOC

Reference forcing

Uses the vendored Qvidja NetCDF reference inputs from the maintained SVMC v1.0.0 test setup: hourly ERA5-Land forcing, daily Sentinel-2 LAI, and daily management.

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Simulated Model Outputs

These summaries and charts are produced by running the SVMC model in WebR/Fortran on the selected reference inputs. They are not prerecorded output files.

Run the model to generate simulated outputs from the selected reference inputs

SVMC — Qvidja Site Full Model

Reference Inputs & Model Settings

Simulated Model Outputs

GPP & NEE (daily)

Carbon pools (daily)

Soil carbon (YASSO20)

Soil moisture & SWE (hourly)

Hourly GPP & transpiration

Stomatal conductance (hourly)