Index Catalog // ScholarsArchive@OSU

Simulated 21st century’s increase in oceanic suboxia by CO2-enhanced biotic carbon export

Creator:: Oschlies, Andreas, Schulz, Kai G., Riebesell, Ulf, and Schmittner, Andreas
Abstract:: The primary impacts of anthropogenic CO2 emissions on marine biogeochemical cycles predicted so far include ocean acidification, global warming induced shifts in biogeographical provinces, and a possible negative feedback on atmospheric CO2 levels by CO2-fertilized biological production. Here we report a new potentially significant impact on the oxygen-minimum zones of...
Resource Type:: Article
Full Text:: suboxia by CO2-enhanced biotic carbon export Andreas Oschlies,1 Kai G. Schulz,1 Ulf Riebesell,1 and

A global model of the marine ecosystem for long-term simulations: Sensitivity to ocean mixing, buoyancy forcing, particle sinking, and dissolved organic matter cycling

Creator:: Schmittner, Andreas, Oschlies, Andreas, Giraud, X., Eby, M., and Simmons, H. L.
Abstract:: A new model of the marine ecosystem coupled into a global Earth System Climate Model suitable for long-term (multimillennial timescale) simulations is presented. The model is based on nitrate as the sole limiting nutrient. Prognostic equations for nutrients, phytoplankton, zooplankton, and detritus are solved online in the three-dimensional ocean circulation...
Resource Type:: Article
Full Text:: organic matter cycling A. Schmittner,1,2 A. Oschlies,3,4 X. Giraud,5,6 M. Eby,7 and H. L. Simmons8

Future changes in climate, ocean circulation, ecosystems, and biogeochemical cycling simulated for a business-as-usual CO2 emission scenario until year 4000 AD

Creator:: Schmittner, Andreas, Oschlies, Andreas, Matthews, H. Damon, and Galbraith, Eric D.
Abstract:: A new model of global climate, ocean circulation, ecosystems, and biogeochemical cycling, including a fully coupled carbon cycle, is presented and evaluated. The model is consistent with multiple observational data sets from the past 50 years as well as with the observed warming of global surface air and sea temperatures...
Resource Type:: Article
Full Text:: 4000 AD Andreas Schmittner,1 Andreas Oschlies,2 H. Damon Matthews,3 and Eric D. Galbraith4 Received 5

Glacial greenhouse-gas fluctuations controlled by ocean circulation changes

Creator:: Schmittner, Andreas and Galbraith, Eric D.
Abstract:: Earth's climate and the concentrations of the atmospheric greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O) varied strongly on millennial timescales during past glacial periods. Large and rapid warming events in Greenland and the North Atlantic were followed by more gradual cooling, and are highly correlated with fluctuations of...
Resource Type:: Article
Full Text:: controlled by ocean circulation changes Andreas Schmittner1 & Eric D. Galbraith2 Earth’s climate and the

Impact of the Ocean’s Overturning Circulation on Atmospheric CO2

Creator:: Schmittner, Andreas, Brook, Edward J., and Ahn, Jinho
Abstract:: A coupled climate-carbon cycle model and ice core CO2 data from the last glacial period are used to explore the impact of changes in ocean circulation on atmospheric CO2 concentrations on millennial time scales. In the model, stronger wind driven circulation increases atmospheric CO2. Changes in the buoyancy driven deep...
Resource Type:: Part of Book
Full Text:: Andreas Schmittner College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis

Using tracer observations to reduce the uncertainty of ocean diapycnal mixing and climate–carbon cycle projections

Creator:: Schmittner, Andreas, Urban, Nathan M., Keller, Klaus, and Matthews, Damon
Abstract:: What is the uncertainty of climate-carbon cycle projections in response to anthropogenic greenhouse gas emissions and how can we reduce this uncertainty? We address this question by quantifying the ability of available ocean tracer observations to constrain the values of diapycnal diffusivity in the pelagic ocean (Kv), a key uncertain...
Resource Type:: Article
Full Text:: uncertainty of ocean diapycnal 3 mixing and climate–carbon cycle projections 4 Andreas Schmittner,1 Nathan M

Assessing the effects of ocean diffusivity and climate sensitivity on the rate of global climate change

Creator:: Ross, Andrew, Matthews, H. Damon, Schmittner, Andreas, and Kothavala, Zavareh
Abstract:: The range in the projections of future climate warming can be attributed to the inherent uncertainty in the representation of climate model parameters and processes. In this study, we assess the effect of uncertainty in climate sensitivity and ocean heat uptake on the rate of future climate change. We apply...
Resource Type:: Article
Full Text:: , ANDREAS SCHMITTNER2 and ZAVAREH KOTHAVALA1, 1Department of Geography, Planning and Environment, Concordia

Effects of Mountains and Ice Sheets on Global Ocean Circulation

Creator:: Schmittner, Andreas, Silva, Tiago A. M., Fraedrich, Klaus, Kirk, Edilbert, and Lunkeit, Frank
Abstract:: The impact of mountains and ice sheets on the large-scale circulation of the world’s oceans is investigated in a series of simulations with a new coupled ocean–atmosphere model [Oregon State University–University of Victoria model (OSUVic)], in which the height of orography is scaled from 1.5 times the actual height (at...
Resource Type:: Article
Full Text:: Global Ocean Circulation* ANDREAS SCHMITTNER AND TIAGO A. M. SILVA1 Oregon State University, Corvallis

What is the skill of ocean tracers in reducing uncertainties about ocean diapycnal mixing and projections of the Atlantic Meridional Overturning Circulation?

Creator:: Schmittner, Andreas, Tonkonojenkov, Roman, Urban, Nathan M., Goes, Marlos, Haran, Murali, and Keller, Klaus
Abstract:: Current projections of the oceanic response to anthropogenic climate forcings are uncertain. Two key sources of these uncertainties are (1) structural errors in current Earth system models and (2) imperfect knowledge of model parameters. Ocean tracer observations have the potential to reduce these uncertainties. Previous studies typically consider each tracer...
Resource Type:: Article
Full Text:: Circulation? 4 Marlos Goes,1 Nathan M. Urban,1 Roman Tonkonojenkov,1 Murali Haran,2 5 Andreas Schmittner,3

What is the skill of ocean tracers in reducing uncertainties about ocean diapycnal mixing and projections of the Atlantic Meridional Overturning Circulation?

Creator:: Goes, Marlos, Urban, Nathan M., Tonkonojenkov, Roman, Haran, Murali, Schmittner, Andreas, and Keller, Klaus
Abstract:: Current projections of the oceanic response to anthropogenic climate forcings are uncertain. Two key sources of these uncertainties are (1) structural errors in current Earth system models and (2) imperfect knowledge of model parameters. Ocean tracer observations have the potential to reduce these uncertainties. Previous studies typically consider each tracer...
Resource Type:: Article
Full Text:: Circulation? 4 Marlos Goes,1 Nathan M. Urban,1 Roman Tonkonojenkov,1 Murali Haran,2 5 Andreas Schmittner,3

ScholarsArchive@OSU

Simulated 21st century’s increase in oceanic suboxia by CO2-enhanced biotic carbon export

A global model of the marine ecosystem for long-term simulations: Sensitivity to ocean mixing, buoyancy forcing, particle sinking, and dissolved organic matter cycling

Future changes in climate, ocean circulation, ecosystems, and biogeochemical cycling simulated for a business-as-usual CO2 emission scenario until year 4000 AD

Glacial greenhouse-gas fluctuations controlled by ocean circulation changes

Impact of the Ocean’s Overturning Circulation on Atmospheric CO2

Using tracer observations to reduce the uncertainty of ocean diapycnal mixing and climate–carbon cycle projections

Assessing the effects of ocean diffusivity and climate sensitivity on the rate of global climate change

Effects of Mountains and Ice Sheets on Global Ocean Circulation

What is the skill of ocean tracers in reducing uncertainties about ocean diapycnal mixing and projections of the Atlantic Meridional Overturning Circulation?

What is the skill of ocean tracers in reducing uncertainties about ocean diapycnal mixing and projections of the Atlantic Meridional Overturning Circulation?

Limit your search

Academic Affiliation

Creator

Date

Decade

Language

Peer Reviewed

Resource Type

Rights Statement

Search Constraints

Search Results

Limit your search