ALLena: Thaw depth measurements of the active layer in the Lena River Delta r...
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Active layer thickness (ALT) is one of currently two Essential Climate Variables related directly to permafrost regions as defined by the Global Climate Observing System (GCOS)...
活动层厚度（Active Layer Thickness, ALT）是目前由全球气候观测系统（GCOS）定义的、与多年冻土区直接相关的两类基本气候变量（Essential Climate Variables）之一……
