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Key results are: (i) a rapid final fall in global sea level of ∼40 m in <2,000 y at the onset of the glacial maximum ∼30,000 y before present (30 ka BP); (ii) a slow fall to −134 m from 29 to 21 ka BP with a maximum grounded ice volume of ∼52 × 10 6 km 3 greater than today; (iii) after an initial short duration rapid rise and a short ...
Together they store a volume of ice that, if completely melted, would cause global sea level to rise by around 65 metres. The ice sheets of West and East Antarctica have a combined ice volume of 26.37 million cubic kilometres, and the inland ice of Greenland around three million cubic kilometres.
12 wrz 2022 · Marginal ice zones (MIZs) are qualitatively distinct sea-ice-covered areas that play a critical role in the interaction between the polar oceans and the broader Earth system.
Fast ice, or land-fast ice, refers to the large, solid ice sheets that are attached to land. The pack ice consists of the smaller, free-floating pieces of sea ice. They may have formed independently, or may have broken off from the fast ice (Figure 14.1.3).
Quick Facts. Science. Sea ice is classified by stages of development that relate to thickness and age. A simple classification categorizes sea ice into two primary age groups: first-year or multiyear. First-year ice has existed only since the end of the previous summer melt season; multiyear ice has survived at least one summer melt season.
20 lis 2014 · 1 Introduction. The appearance and morphology of the Arctic sea ice cover undergo profound changes over an annual cycle. In spring, the ice cover consists of large floes separated by narrow, long, linear leads. The ice is snow covered, with a uniform, bright appearance and a high albedo.
6 maj 2018 · Key Points. We develop the first global ocean-sea ice model to prognostically simulate a sea ice floe size distribution. The floe size distribution emerges by resolving processes acting on individual floes. Floe size-dependent feedbacks have a significant impact on simulated sea ice. Plain Language Summary.
