How does sunlight affect de-icing procedures?

Sunlight plays a significant role in affecting surface temperatures, which is crucial during de-icing procedures. When sunlight shines on surfaces such as runways or taxiways, it can elevate the temperature of these areas, even if the air temperature is below freezing. Increased surface temperatures can help accelerate the melting of ice and snow that has accumulated, making de-icing more effective.

Warmer surfaces can also enhance the effectiveness of de-icing fluids, as they tend to work better when applied to surfaces that are not extremely cold. This is because when the surface warms up, it helps in promoting the melting process of any ice. Hence, sunlight contributes positively to de-icing efforts by promoting a more favorable environment for the removal of ice and snow.