The regime shift of the 1920s and 1930s in the North Atlantic

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

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https://www.researchgate.net/publication/222661107_The_regime_shift_of_the_1920s_and_1930s_in_the_North_Atlantic

The warming of the Arctic in the 1920s and 30s is well documented, despite attempts to wipe it from the temperature record. But it is always good to come across another paper, even though this one dates back to 2006.

ABSTRACT

During the 1920s and 1930s, there was a dramatic warming of the northern North Atlantic Ocean. Warmer-than-normal sea temperatures, reduced sea ice conditions and enhanced Atlantic inflow in northern regions continued through to the 1950s and 1960s, with the timing of the decline to colder temperatures varying with location. Ecosystem changes associated with the warm period included a general northward movement of fish. Boreal species of fish such as cod, haddock and herring expanded farther north while colder-water species such as capelin and polar cod retreated northward. The maximum recorded movement involved cod, which spread approximately 1200 km northward along West Greenland. Migration patterns of…

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