Snow Water Equivalent 2006-2024 (raster 5 km), northern hemisphere, daily - version 1

Snow Water Equivalent products describe the equivalent amount of liquid water stored in the snow pack. It indicates the water column that would theoretically result should the whole snow pack melt instantaneously and is defined as product between the snow layer’s depth and density.

Information about snow water equivalent is needed in applications such as flood forecasting, controlling the water level of power plant reservoirs, planning for forestry and crop irrigation and as input and control variable for many environment research purposes, including climate change research.

雪水当量（Snow Water Equivalent, SWE）产品用于表征积雪层中储存的液态水当量。其可表征若积雪层完全瞬时融化后理论上形成的水柱高度，定义为积雪层深度与密度的乘积。

雪水当量相关信息在诸多应用场景中不可或缺，例如洪水预报、电站水库水位调控、林业与农业灌溉规划，同时还可作为包括气候变化研究在内的众多环境研究的输入变量与控制变量。