Modifying Surface Dataset with Urban Features for Mountain Cases

[AquaTech_007]

Hi,

I am running SPT simulations using CLM5 and need guidance on better representing a mountainous case study site in the surface dataset. The site is primarily grassland, located at a high elevation 2500 m in a mountainous region with underlying impervious rock. it is recommended that in areas with impervious bedrock, a shallower bedrock depth should be used. However, I'm encountering an issue where snowmelt and the energy fluxes are simulated too late for few days at the start of snowmelt, typically around May or June. Is it valid to use some percentage of Urban in a grid cell after modifications like walls, roof etc in the surface dataset.​

 

[oleson]

Unless you actually have some urban fraction in your SPT domain, I wouldn't recommend doing that.
If you want to implement a shallower bedrock depth, then one way to do that is to modify the "zbedrock" variable on the surface dataset.