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Bericht van: Saskia (Diepenveen)  - moderator - , 05-01-2017 11:53 

The underestimated danger of a breakdown of the Gulf Stream System

A new model simulation of the Gulf Stream System shows a breakdown of the gigantic overturning circulating in the Atlantic after a CO2 doubling.

A new study in Science Advances by Wei Liu and colleagues at the Scripps Institution of Oceanography in San Diego and the University of Wisconsin-Madison has important implications for the future stability of the overturning circulation in the Atlantic Ocean. They applied a correction to the freshwater fluxes in the Atlantic, in order to better reproduce the salt concentration of ocean waters there. This correction changes the overall salt budget for the Atlantic, also changing the stability of the model’s ocean circulation in future climate change. The Atlantic ocean circulation is relatively stable in the uncorrected model, only declining by about 20% in response to a CO2 doubling, but in the corrected model version it breaks down completely in the centuries following a CO2 doubling, with dramatic consequences for the climate of the Northern Hemisphere.

The potential instability of the Atlantic Meridional Overturning Circulation or AMOC – commonly known as the Gulf Stream System – has been a subject of research since the 1980s, when Wallace Broecker warned in an essay in Nature of Unpleasant Surprises in the Greenhouse. The reason for this was growing evidence of abrupt climate changes in the history of the Earth due to instability of Atlantic currents.

De hele blogpost (lang stuk) vind je op deze webpagina: http://www.realclimate.org/index.php/archives/2017/01/the-underestimated-danger-of-a-breakdown-of-the-gulf-stream-system

Study AMOC   ( 1057)
Ruben (Ås, nabij Oslo, Noorwegen) ( 53m) -- 04-01-2017 23:34
Realclimate blogt er ook over   ( 946)
Saskia (Diepenveen) ( 5m) -- 05-01-2017 11:53
Dank beiden voor de links, onderwerp is al een tijd   ( 573)
Pieterweer (Doetinchem) ( 15m) -- 08-01-2017 23:33
Kritiek op het artikel (Noors)   ( 710)
Ruben (Ås, nabij Oslo, Noorwegen) ( 53m) -- 10-01-2017 21:56
Re : Kritiek op het artikel (Noors)   ( 638)
Rob (Westland) -- 11-01-2017 11:45