Influencing Ocean Temperature and Salinity
It has been suggested that locally influencing salinity and temperature of the Arctic Ocean, by changing the ratio of Pacific and fluvial waters entering through the Bering Strait could play a key role in preserving Arctic sea ice. The purpose would be to create a relative increase of fresh water inflow from the Yukon River, while blocking (part) of the warm and saltier waters from the Pacific Ocean. Proposed geoengineering options include a dam connecting St. Lawrence Island and a threshold under the narrow part of the strait.
Read more about this topic: Arctic Geoengineering
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