Snösmältningspunkt

Snösmältningspunkt refers to the temperature at which snow begins to melt. In pure water, this temperature is 0 degrees Celsius or 32 degrees Fahrenheit at standard atmospheric pressure. However, the melting point of snow can be influenced by several factors. Impurities within the snow, such as dirt, salt, or other dissolved substances, can lower the melting point. This is why sidewalks treated with salt melt snow at temperatures below freezing.

Atmospheric pressure also plays a minor role. At higher altitudes, where pressure is lower, the melting point can be slightly lower than at sea level. Conversely, increased pressure would slightly raise the melting point. The physical state of the surrounding environment also matters. If the air temperature is above the melting point, heat will transfer to the snow, causing it to melt. If the air temperature is below the melting point but there is radiant heat from the sun, melting can still occur. The term is often used in discussions related to weather forecasting, hydrology, and climate science.