scholarly journals How Choice of Depth Horizon Influences the Estimated Spatial Patterns and Global Magnitude of Ocean Carbon Export Flux

2018 ◽  
Vol 45 (9) ◽  
pp. 4171-4179 ◽  
Author(s):  
Hilary I. Palevsky ◽  
Scott C. Doney
Keyword(s):  
Spatial Patterns ◽  
Carbon Export ◽  
Export Flux ◽  
Ocean Carbon ◽  
Depth Horizon

scholarly journals Southern Ocean carbon export efficiency in relation to temperature and primary productivity

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Gaojing Fan ◽  
Zhengbing Han ◽  
Wentao Ma ◽  
Shuangling Chen ◽  
Fei Chai ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Primary Productivity ◽  
Carbon Export ◽  
Ocean Carbon

scholarly journals The relative contribution of fast and slow sinking particles to ocean carbon export

2012 ◽  
Vol 26 (1) ◽  
pp. n/a-n/a ◽  
Author(s):  
J. S. Riley ◽  
R. Sanders ◽  
C. Marsay ◽  
F. A. C. Le Moigne ◽  
E. P. Achterberg ◽  
...  
Keyword(s):  
Carbon Export ◽  
Relative Contribution ◽  
Sinking Particles ◽  
Ocean Carbon

234Th-derived particulate organic carbon export flux in the western Arctic Ocean

2010 ◽  
Vol 28 (6) ◽  
pp. 1146-1151 ◽  
Author(s):  
Wen Yu ◽  
Liqi Chen ◽  
Jianping Cheng ◽  
Jianhua He ◽  
Mingduan Yin ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Arctic Ocean ◽  
Particulate Organic Carbon ◽  
Carbon Export ◽  
Western Arctic Ocean ◽  
Export Flux ◽  
Western Arctic

Effect of different rates and modes of artificial upwelling on particle flux and potential POC deep export

2021 ◽  
Author(s):  
Moritz Baumann ◽  
Jan Taucher ◽  
Allanah Joy Paul ◽  
Malte Heinemann ◽  
Mari Vanharanta ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Organic Matter ◽  
Deep Water ◽  
Open Water ◽  
Carbon Export ◽  
Export Flux ◽  
Surface Ocean ◽  
Sequestration Potential ◽  
Sinking Velocities ◽  
Removal Technique

<p>To counteract climate change, measures to actively remove carbon dioxide from the atmosphere are required, since the reduction of global CO<sub>2</sub> emissions alone will not suffice to meet the 1.5 °C goal of the Paris agreement. Artificial upwelling in the ocean has been discussed as one such carbon dioxide removal technique, by fueling primary production in the surface ocean with nutrient-rich deep water and thereby potentially enhancing downward fluxes of organic matter and carbon sequestration. In this study we tested the effect of different rates and modes of artificial upwelling on carbon export and its potential attenuation with depth in a five-week mesocosm experiment in the subtropical Northeast Atlantic. We fertilized oligotrophic surface waters with different amounts of deep water in a pulsed (deep water fertilization once at the beginning) and a continuous manner (deep water fertilization every four days) and measured the resulting export flux as well as sinking velocities and respiration rates of sinking particles. Based on this, we applied a simple one-dimensional model to calculate flux attenuation. We found that the export flux more than doubled when fertilizing with deep water, while the C:N ratios of produced organic matter increased from values around Redfield (6.6) to ~8-13. The pulsed form of upwelling resulted in a single export event, while the continuous mode led to a persistently elevated export flux. Particle sinking velocity and remineralization rates were highly variable over time and showed differences between upwelling modes. We stress the importance of experiments with a prolonged application of artificial upwelling and studies including real world open water application to validate the CO<sub>2</sub> sequestration potential of artificial upwelling.</p>

Air—sea C0 2 transfer and the carbon budget of the North Atlantic

1995 ◽  
Vol 348 (1324) ◽  
pp. 211-219 ◽  
Keyword(s):  
Spatial Distribution ◽  
Carbon Budget ◽  
Dissolved Inorganic Carbon ◽  
Model Simulation ◽  
Bering Strait ◽  
Carbon Export ◽  
The North ◽  
The Pacific ◽  
Ocean Carbon ◽  
The Impact

A model simulation of the global carbon cycle demonstrates that the biological and solubility pumps are of comparable importance in determining the spatial distribution of annual mean air-sea fluxes in the Atlantic. The model also confirms that the impact of the (steady state) biological pump on the magnitude and spatial distribution of anthropogenic CO 2 uptake is minimal. An Atlantic Ocean carbon budget developed from analysis of the model combined with observations suggests that the air-sea flux of carbon is inadequate to supply the postulated large dissolved inorganic carbon export from the Atlantic. Other sources of carbon are required, such as an input from the Pacific via the Bering Strait and Arctic, river inflow, or an import of dissolved organic carbon.

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