7.1. Model Inputs

7.1.1. Model Physics options

  • RunControl

  • the selection of which submodels are to be used

  • choose after the other decisions

7.1.2. Forcing data

7.1.2.1. Data Sources

  • Observations

  • Climate data e.g. ERA5, projections

  • Coupled Model e.g. WRF

7.1.2.2. Height consideration of the forcing data

7.1.3. Site Information

7.1.4. Initial Conditions

  • Initial conditions

  • Conducting a model spinup for a number of years allows for the influence of the conditions selected to begin with to become less critical.

  • Key conditions to consider

    • leaf area index (leaf-on, leaf-off) - this is critical for evaporation

    • soil moisture state - this is critical for evaporation

  • less critical

    • surface state (as long as modelling for many days) as these will change rapidly.

    • it is easy to just set this to be dry (e.g. summer) or wet (e.g. if rain has just occured)

  • meteorological variables

    • These can be determined from a wide range of data (e.g. the same source as your forcing data)

  • snow conditions

    • This needs to be done very carefully for a short model run. A long model run starting from snow-free conditons would ensure that the snow accumulation occurs at the right time etc

Tip

  1. Stuck? the help page is a useful page to start.

  2. Please report workshop manual issues at GitHub Issues. Please go from the page with problem as an automatical link will be inserted. Thanks.