Icy message from the Antartic

Article Abstract:

The majority of whaling in the Antarctic took place at the ice edge where whales fed on krill. It is suggested by de la Mare that there was a large and rapid fall in Antarctic summertime sea-ice extent between the 1950s and the 1970s, and such a change is of global significance. An expected consequence of a summer sea-ice retreat would be the rise in atmospheric and oceanic temperatures, although Japanese whaling ships did not detect significant warming between 1946 and 1984. De la Mare's work emphasises the processes involved in generating variation and rapid change in the Southern Ocean.

Ocean-atmosphere interaction

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Linear and nonlinear signatures

Article Abstract:

The observed warming of the Earth over the past 100 years is likely to be due to anthropogenic emissions of greenhouse gases. Corti and colleagues have suggested a direct link between short-term climate changes on timescales of less than five years, which have strongly influenced extreme weather events, and mean climate changes on longer timescales. Their hypothesis is based on analysis of 45 years of atmospheric pressure fields.

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