Figure 7.7 Schematic illustration of the freshwater budget for the Arctic Ocean for the period (nominally) 1980–2000, the decade of the 2000s, and the difference between them. In each diagram, the principal freshwater sources are precipitation minus evaporation (P-E), runoff, and flow through Bering Strait. The principal sinks are outflow through Davis and Fram Straits. The freshwater reservoirs are split between liquid freshwater (with the Beaufort Gyre shown in the circle) and sea ice (seasonal and multiyear). The area of each shape is proportional to the corresponding freshwater flux or reservoir volume (see the white box for scale). (Haine et al., 2015).