Sentences with phrase «abrupt changes in ocean circulation»

Not exact matches

But within these long periods there have been abrupt climate changes, sometimes happening in the space of just a few decades, with variations of up to 10ºC in the average temperature in the polar regions caused by changes in the Atlantic ocean circulation.

The 8.2 kyr event qualifies as an abrupt change by almost any definition (except that adopted by the NRC panel on the subject curiously) and was most likely tied to the catastrophic final draining of paleo - lake Agassiz and subsequent changes in the North Atlantic ocean circulation (see a summary of some of our recent research on the topic).

The 8.2 kyr event qualifies as an abrupt change by almost any definition (except that adopted by the NRC panel on the subject curiously) and was most likely tied to the catastrophic final draining of paleo - lake Agassiz and subsequent changes in the North Atlantic ocean circulation (see a summary of some of our recent research on the topic).

Strong evidence from ocean sediment data and from modelling links abrupt climate changes during the last glacial period and glacial - interglacial transition to changes in the Atlantic Ocean circulaocean sediment data and from modelling links abrupt climate changes during the last glacial period and glacial - interglacial transition to changes in the Atlantic Ocean circulaOcean circulation.

The abrupt shifts in Pacific Ocean circulation involve changes in the PDO in the north - eastern Pacific and coincident changes in the frequency and intensity of ENSO events.

It is not clear that the world is warming post the 1998/2001 climate shift — that involved a climatically significant step change in albedo as a response to abrupt changes in ocean and atmospheric circulation.

The scientists stress that more work is needed to determine whether changes in ocean circulation initiated the abrupt climate changes or were an intermediary effect initially triggered by something else.

The new study explores what happened to ocean circulation when the Earth went through a series of abrupt climate changes in the past, during a time when ice covered part of North America and temperatures were colder than today.

«Our study supports the view that changes in ocean circulation were at least in part responsible for causing abrupt climate changes.

By 2006 some models still found that changes in the ocean circulation «are able to produce abrupt climate changes on decadal to centennial time scales,» Randall et al. (2007), p. 641.

A change in climate states caused by abrupt changes in ocean and atmospheric circulation.

Abrupt climate changes, such as the collapse of the West Antarctic Ice Sheet, the rapid loss of the Greenland Ice Sheet or large - scale changes of ocean circulation systems, are not considered likely to occur in the 21st century, based on currently available model results.