[OANNES Foro] THE REINVIGORATION OF THE SOUTHERN OCEAN CARBON SINK

Mario Cabrejos casal en infotex.com.pe
Lun Sep 14 18:37:59 PDT 2015


Science 11 September 2015: 
Vol. 349 no. 6253 pp. 1221-1224

DOI:10.1126/science.aab2620


 


THE REINVIGORATION OF THE SOUTHERN OCEAN CARBON SINK


Several studies have suggested that the carbon sink in the Southern
Ocean-the ocean's strongest region for the uptake of anthropogenic CO2 -has
weakened in recent decades. We demonstrated, on the basis of multidecadal
analyses of surface ocean CO2 observations, that this weakening trend
stopped around 2002, and by 2012, the Southern Ocean had regained its
expected strength based on the growth of atmospheric CO2. All three Southern
Ocean sectors have contributed to this reinvigoration of the carbon sink,
yet differences in the processes between sectors exist, related to a
tendency toward a zonally more asymmetric atmospheric circulation. The large
decadal variations in the Southern Ocean carbon sink suggest a rather
dynamic ocean carbon cycle that varies more in time than previously
recognized. 

 



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