How is the freezing level depicted on a GFA?

The freezing level is depicted using dotted lines on a GFA (Graphic Forecast Aviation). This representation helps pilots and meteorologists quickly identify the altitude at which the temperature drops to 0 degrees Celsius, indicating where icing conditions may begin to occur during flight. Dotted lines provide clear visual distinction without cluttering the chart, which aids in effective weather assessment for aviation purposes. The use of dots allows for easier interpretation compared to solid or dashed lines, which might be used for other features like fronts or significant weather areas. Understanding the depiction of the freezing level is crucial for safe flight planning and navigating through potential icing conditions.