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By National Research Council, Division on Earth and Life Studies, Board on Atmospheric Sciences and Climate, Polar Research Board, Ocean Studies Board, Committee on Abrupt Climate Change

ISBN-10: 0309074347

ISBN-13: 9780309074346

Committee on Abrupt weather swap, Ocean reports Board, Polar study Board, Board on Atmospheric Sciences and weather, department on the earth and lifestyles reports, nationwide examine Council

The weather list for the previous 100,000 years in actual fact exhibits that the weather process has passed through periodic--and frequently extreme--shifts, occasionally in as low as a decade or much less. The reasons of abrupt weather adjustments haven't been truly verified, however the triggering of occasions could be the results of a number of average processes.

Abrupt weather adjustments of the significance obvious long ago might have far-reaching implications for human society and ecosystems, together with significant affects on power intake and water offer calls for. may well this sort of switch occur back? Are human actions exacerbating the possibility of abrupt weather swap? What are the capability societal outcomes of any such switch?

Abrupt weather swap: Inevitable Surprises appears to be like on the present medical facts and theoretical knowing to explain what's presently recognized approximately abrupt weather switch, together with styles and magnitudes, mechanisms, and likelihood of incidence. It identifies severe wisdom gaps about the strength for destiny abrupt adjustments, together with these features of switch most crucial to society and economies, and descriptions a learn technique to shut these gaps.

in response to the easiest and most modern examine on hand, this publication surveys the heritage of weather switch and makes a chain of particular concepts for the longer term.

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2001). The name Dansgaard/ Oeschger oscillation is often applied to such changes on the basis of early work by Dansgaard et al. (1984) and Oeschger et al. (1984). The terminology can be inconsistent; the warm times associated with these during the ice age originally were termed Dansgaard/Oeschger events, but evidence of cyclic behavior suggests that oscillation is more appropriate. , 1998); and temperature records from the Byrd ice core, West Antarctica (which was warm when Greenland was cold) (Blunier and Brook, 2001).

Owing to dating uncertainties, including those associated with the conversion of radiocarbon measurements to calendar years, the phasing of events between different locations is not known exactly. The ice cores show that much of the world must have changed nearly simultaneously to yield the observed changes in methane, Asian dust, and Greenland conditions, but we cannot say with confidence whether all events were simultaneous or some were sequential. A summary of much of the relevant terrestrial pollen information follows, organized by region.

1998). , 2000a). , 1997). In a sediment record that links land to ocean, Maslin and Burns (2000) documented evidence of a dry Younger Dryas in the tropical Atlantic Amazon Fan. As reviewed by Boyle (2000), work including that by Boyle and Keigwin (1987) and Bond et al. (1997) showed that changes in proxies from bottom-dwelling foraminiferal shells indicate reduction in deep export of waters that sank in the North Atlantic during the Younger Dryas. , 1999; Blunier and Brook, 2001). Overall, the available data indicate that the Younger Dryas was a strong event with a global footprint.

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Abrupt Climate Change: Inevitable Surprises by National Research Council, Division on Earth and Life Studies, Board on Atmospheric Sciences and Climate, Polar Research Board, Ocean Studies Board, Committee on Abrupt Climate Change

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