Icebergs Fertilize Southern Ocean, Sequester Carbon
نویسندگان
چکیده
منابع مشابه
The effect of dynamic-thermodynamic icebergs on the Southern Ocean climate in a three-dimensional model
Melting icebergs are a mobile source of fresh water as well as a sink of latent heat. In most global climate models, the spatio-temporal redistribution of fresh water and latent heat fl uxes related to icebergs is parameterized by an instantaneous more or less arbitrary fl ux distribution over some parts of the oceans. It is uncertain if such a parameterization provides a realistic representati...
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We report the results of laboratory and field studies examining inorganic carbon (Ci) utilization by Southern Ocean phytoplankton. Both in monospecific laboratory cultures of diatoms and Phaeocystis antarctica and in natural assemblages in the Ross Sea, Ci uptake by phytoplankton was dominated by direct HCO { 3 transport. The contribution of HCO 3 transport to total Ci uptake ranged from 65% to...
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The Southern Ocean fascinates us. It retains an aura of mystery from the time of the early European explorers, when to sail through the Straits of Magellan or around Cape Horn was to leave the known world behind. Then, as now, the waters of the Southern Ocean earned a reputation as the roughest and most challenging on the Earth, a test for the bravest of mariners. Many that sailed there never r...
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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 o...
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Upper-ocean fluxes of particulate organic carbon (POC) and biogenic silica (bSi) are calculated from four US JGOFS cruises along 1701W using a thorium-234 based approach. Both POC and bSi fluxes exhibit large variability vs. latitude during the seasonal progression of diatom dominated blooms. POC fluxes at 100m of up to 50mmolCm 2 d 1 are found late in the bloom, and farthest south near the Ros...
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ژورنال
عنوان ژورنال: Eos
سال: 2016
ISSN: 2324-9250
DOI: 10.1029/2016eo043707