Sentences with phrase «changes in ocean circulation triggered»

Not exact matches

«We argue that it was the establishment of the modern deep ocean circulation — the ocean conveyor — about 2.7 million years ago, and not a major change in carbon dioxide concentration in the atmosphere that triggered an expansion of the ice sheets in the northern hemisphere,» says Stella Woodard, lead author and a post-doctoral researcher in the Department of Marine and Coastal Sciences.

«Changes in ocean circulation have been proposed as a trigger mechanism for the large coupled climate and carbon cycle perturbations at the Paleocene - Eocene Thermal Maximum (PETM, ca. 55 Ma).

Recent studies have therefore preferred mechanismsthat require a climatological trigger for carbon injection, for example through enhance - 5 ment of seasonal extremes that caused changes in ocean circulation, which in turncould dissociate submarine methane hydrates (Lunt et al., 2011).

The loss of Arctic Sea ice could alter ocean circulation patterns and trigger changes in global climate patterns.

«In 2007 a team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scaleIn 2007 a team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scalein Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scales.

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.

«-- A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade - long time scales.

And as the for the reason for this year's Arctic ice melt, NASA and university scientists have detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that varies on decade - long time scales.

Among the global - scale tipping points identified by earth scientists are the collapse of large ice sheets in Greenland and Antarctica, changes in ocean circulation, feedback processes by which warming triggers more warming, and the acidification of the ocean.h

When a full - depth ocean model is used, something intriguing happens: the loss of Arctic sea ice triggers a far - flung response that mimics climate change itself, including a slowdown of the Atlantic Meridional Overturning Circulation (AMOC), a build - up of heat in the tropical oceans over several decades, and a warming of the atmosphere a few miles above the tropics.