The freezing index (FI) is a crucial factor for calculating the temporal and spatial distribution of permafrost and the thickness of the active layer in a permafrost region. Understanding the variation in thermal conditions of the permafrost active layer is significant for investigating both the spatial and temporal distribution of permafrost as well as its degradation.
Click here for original story, Study reveals relationship between spatiotemporal variations of freezing index and permafrost degradation
Source: Phys.org