The "line" of continuous permafrost lies further north at some latitudes than others and can gradually move northward or southward due to regional climatic changes.
It can gradually move northward or southward due to regional climatic changes. The "line" of continuous permafrost is not perfecty linear, lying further north at some longitudes than others.
The "line" of continuous permafrost is not perfecty linear, lying further north at some longitudes than others. It can gradually move northward or southward due to regional climatic changes.
The "line" of continuous permafrost is not perfecty linear, lying further north at some longitudes than others. It can gradually move northward or southward due to regional climatic changes.