Knowledge of sea-ice thickness and volume depends on freeboard observations from satellite altimeters and in turn on information of snow mass and sea-ice density required for the freeboard-to-thickness conversion. These parameters. especially sea-ice density. are usually based on climatologies constructed from in situ observations made in the 1980s and earlier while contemporary and r... https://www.ldartstudio.com/product-category/eyebrow-pencil/