Glm lake model

Running the General Lake Model (GLM3) for lake temperature simulation, including configuration file structure and execution.From its SKILL.md

Install

npx -y skills add cxcscmu/SkillLearnBench --skill glm-lake-model

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

SKILL.md

1.6 KB, 403 tokens by cl100k_base, as published. Nobody here has run it

GLM (General Lake Model) is a 1D hydrodynamic model for simulating vertical water temperature, mixing, and stratification in lakes.

GLM binary is typically at /usr/local/bin/glm. Run with:

cd /path/to/simulation/dir
glm

GLM reads glm3.nml from the current directory.

Key sections:

&glm_setup: Basic simulation parameters
&light: Light extinction (Kw = light attenuation coefficient, m⁻¹)
&mixing: Turbulent mixing parameters
- coef_mix_hyp: Hypolimnetic mixing coefficient
- coef_mix_conv, coef_wind_stir, coef_mix_shear, coef_mix_turb, coef_mix_KH
&time: Simulation period (start, stop in 'YYYY-MM-DD hh:mm:ss')
&output: Output directory and filename
&meteorology: Met forcing file and factors
- wind_factor: Scale wind speed
- lw_factor: Scale longwave radiation
- ch: Sensible heat transfer coefficient
- sw_factor, cd, ce: Do NOT change these
&init_profiles: Initial temperature/salinity profiles

cd /root  # Must run from directory containing glm3.nml
glm       # Reads glm3.nml, writes output per &output section

NetCDF file at output/output.nc with variables:
- time: time in days since reference
- z: layer heights (m above bottom)
- temp: water temperature (°C) per layer
- NS: number of active layers per timestep

Read from the repository

Just SKILL.md. No reference files, no scripts.