Natural Carbon Sequestration by Forestry

2019 ◽  
pp. 73-92
Author(s):  
Xolile G. Ncipha ◽  
Venkataraman Sivakumar
Keyword(s):  
Carbon Sequestration ◽  
Natural Carbon

scholarly journals Simulating natural carbon sequestration in the Southern Ocean: on uncertainties associated with eddy parameterizations and iron deposition

2017 ◽  
Vol 14 (6) ◽  
pp. 1561-1576 ◽  
Author(s):  
Heiner Dietze ◽  
Julia Getzlaff ◽  
Ulrike Löptien
Keyword(s):  
Carbon Sequestration ◽  
Southern Ocean ◽  
Ocean Circulation ◽  
Spatial Scales ◽  
Carbon Uptake ◽  
Comprehensive Understanding ◽  
Biogeochemical Models ◽  
Anthropogenic Carbon ◽  
Natural Carbon ◽  
Oceanic Carbon

Abstract. The Southern Ocean is a major sink for anthropogenic carbon. Yet, there is no quantitative consensus about how this sink will change when surface winds increase (as they are anticipated to do). Among the tools employed to quantify carbon uptake are global coupled ocean-circulation–biogeochemical models. Because of computational limitations these models still fail to resolve potentially important spatial scales. Instead, processes on these scales are parameterized. There is concern that deficiencies in these so-called eddy parameterizations might imprint incorrect sensitivities of projected oceanic carbon uptake. Here, we compare natural carbon uptake in the Southern Ocean simulated with contemporary eddy parameterizations. We find that very differing parameterizations yield surprisingly similar oceanic carbon in response to strengthening winds. In contrast, we find (in an additional simulation) that the carbon uptake does differ substantially when the supply of bioavailable iron is altered within its envelope of uncertainty. We conclude that a more comprehensive understanding of bioavailable iron dynamics will substantially reduce the uncertainty of model-based projections of oceanic carbon uptake.

Carbon sequestration as part of the global warming solution – Using software to combine environmental stewardship with economic benefit

2008 ◽  
Vol 84 (2) ◽  
pp. 162-165
Author(s):  
Donna St. Jean Conti
Keyword(s):  
Carbon Sequestration ◽  
Spatial Planning ◽  
Economic Benefit ◽  
Environmental Stewardship ◽  
Carbon Trading ◽  
Effective Management ◽  
Carbon Sinks ◽  
Carbon Credits ◽  
Modeling Software ◽  
Natural Carbon

The purpose of this paper is to provide an overview of what carbon sequestration is, how forests are used as natural carbon sinks and how selling carbon credits is proving to be a potentially new revenue stream for organizations and other entities managing large tracks of forested area. Finally, this paper will show how Remsoft’s spatial planning and modeling software system enables efficient and effective management of forests as carbon sinks. Key words: carbon sequestration, carbon credits, carbon trading, forestry, forests as carbon sinks, spatial planning and modeling software, Remsoft

Reactive Transport Modeling of Natural Carbon Sequestration in Ultramafic Mine Tailings

2012 ◽  
Vol 11 (2) ◽  
pp. vzj2011.0053 ◽  
Author(s):  
S.A. Bea ◽  
S.A. Wilson ◽  
K.U. Mayer ◽  
G.M. Dipple ◽  
I.M. Power ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Mine Tailings ◽  
Reactive Transport ◽  
Transport Modeling ◽  
Reactive Transport Modeling ◽  
Natural Carbon

scholarly journals Simulating natural carbon sequestration in the Southern Ocean: on uncertainties associated with eddy parameterizations and iron deposition

2016 ◽  
Author(s):  
Heiner Dietze ◽  
Julia Getzlaff ◽  
Ulrike Löptien
Keyword(s):  
Carbon Sequestration ◽  
Southern Ocean ◽  
Ocean Circulation ◽  
Spatial Scales ◽  
Carbon Uptake ◽  
Comprehensive Understanding ◽  
Biogeochemical Models ◽  
Anthropogenic Carbon ◽  
Natural Carbon ◽  
Oceanic Carbon

Abstract. The Southern Ocean is a major sink for anthropogenic carbon. Yet, there is no quantitative consensus about how this sink will change when surface winds increase (as they are anticipated to do). Among the tools employed to quantify carbon uptake are global coupled ocean-circulation biogeochemical models. Because of computational limitations these models still fail to resolve potentially-important spatial scales. Instead, processes on these scales are parameterized. There is concern that deficiencies in these so-called eddy-parameterizations might imprint wrong sensitivities of projected oceanic carbon uptake. Here, we compare natural carbon uptake in the Southern Ocean simulated with contemporary eddy-parameterizations. We find that very differing parameterizations yield surprisingly similar oceanic carbon in response to strengthening winds. In contrast, we find (in an additional simulation) that the carbon uptake does differ substantially when the supply of bioavailable iron is altered within its envelope of uncertainty. We conclude that a more comprehensive understanding of bioavailable iron dynamics will substantially reduce the uncertainty of model-based projections of oceanic carbon uptake.

scholarly journals Let more big fish sink: Fisheries prevent blue carbon sequestration—half in unprofitable areas

2020 ◽  
Vol 6 (44) ◽  
pp. eabb4848
Author(s):  
Gaël Mariani ◽  
William W. L. Cheung ◽  
Arnaud Lyet ◽  
Enric Sala ◽  
Juan Mayorga ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Fuel Consumption ◽  
Marine Fish ◽  
Deep Ocean ◽  
Blue Carbon ◽  
Fish Stocks ◽  
Carbon Pump ◽  
Natural Carbon ◽  
High Seas

Contrary to most terrestrial organisms, which release their carbon into the atmosphere after death, carcasses of large marine fish sink and sequester carbon in the deep ocean. Yet, fisheries have extracted a massive amount of this “blue carbon,” contributing to additional atmospheric CO2 emissions. Here, we used historical catches and fuel consumption to show that ocean fisheries have released a minimum of 0.73 billion metric tons of CO2 (GtCO2) in the atmosphere since 1950. Globally, 43.5% of the blue carbon extracted by fisheries in the high seas comes from areas that would be economically unprofitable without subsidies. Limiting blue carbon extraction by fisheries, particularly on unprofitable areas, would reduce CO2 emissions by burning less fuel and reactivating a natural carbon pump through the rebuilding of fish stocks and the increase of carcasses deadfall.

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