Snow Hydrological Processes

Snow is a form of precipitation. Dry snow usually has a water content of 10% at temperatures below zero.

Accumulation: The longer temperature stays below zero, the thicker the snow cover is.

Compression: If the temperature rises over freezing point, warm air compresses the snow cover and increases its compactness.

Ablation: when snow starts being melted at temperatures above zero, it will not release water before it achieves the “Maximal compactness” (~ 45% of water content).

The snow melt processes can be mathematically described by the Snow-Compaction-Method, based on the physical processes during the snow melting (Figure 1).

 

Snow Processes

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Hydrological modelling
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TUHH

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