adjacent to land snow mass snow layer snow-covered land 2021-04-14T18:57:18.275Z envoPolar Land which is covered or partially covered by snow. The threshold at which land is considered covered by snow varies. Please define such thresholds on the instance level, or request a subclass of this class if a threshold you know of is used by a large community of practice or in an official definition. This is one of three classes representing the idea of snow cover in the GCW glossary in addition to depth of snow and snow cover. In the GCW this refers to 1. The areal extent of snow-covered ground, usually expressed as percent of total area in a given region. area of snow cover envoCryo land covered by snow snow covered land