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## Boundary Conditions in the Lake Model

The article discusses the boundary conditions used in the lake model.

### Top Boundary Condition
The top boundary condition is the downwards surface flux (G) defined by the energy flux residual during the surface temperature solution.

### Bottom Boundary Condition
The bottom boundary condition is a zero flux condition.

### 2-m Wind Speed Calculation
The 2-m wind speed (u_2) is calculated using the friction velocity (u_*) and the von Karman constant (k), as shown in Equation 2.12.33. This wind speed is used in the calculation of eddy diffusivity.

The summary captures the main points of the article, including the details about the top and bottom boundary conditions, as well as the calculation of the 2-m wind speed. The information is presented in a clear and concise manner, with appropriate headings to organize the content.