Search Results - "Schmittner, A."

Complementary constraints from carbon (13C) and nitrogen (15N) isotopes on the glacial ocean's soft‐tissue biological pump by Schmittner, A., Somes, C. J.

“…A three‐dimensional, process‐based model of the ocean's carbon and nitrogen cycles, including 13C and 15N isotopes, is used to explore effects of idealized…”
Get full text

Air-sea disequilibrium enhances ocean carbon storage during glacial periods by Khatiwala, S, Schmittner, A, Muglia, J

“…The prevailing hypothesis for lower atmospheric carbon dioxide (CO ) concentrations during glacial periods is an increased efficiency of the ocean's biological…”
Get full text

Early deglacial Atlantic overturning decline and its role in atmospheric CO2 rise inferred from carbon isotopes (?13C) by Schmittner, A, Lund, D C

“…The reason for the initial rise in atmospheric CO2 during the last deglaciation remains unknown. Most recent hypotheses invoke Southern Hemisphere processes…”
Get full text

Fate of the Atlantic Meridional Overturning Circulation: Strong decline under continued warming and Greenland melting by Bakker, P., Schmittner, A., Lenaerts, J. T. M., Abe‐Ouchi, A., Bi, D., Broeke, M. R., Chan, W.‐L., Hu, A., Beadling, R. L., Marsland, S. J., Mernild, S. H., Saenko, O. A., Swingedouw, D., Sullivan, A., Yin, J.

“…The most recent Intergovernmental Panel on Climate Change assessment report concludes that the Atlantic Meridional Overturning Circulation (AMOC) could weaken…”
Get full text

Model projections of the North Atlantic thermohaline circulation for the 21st century assessed by observations by Schmittner, A., Latif, M., Schneider, B.

“…Most climate models predict a weakening of the North Atlantic thermohaline circulation for the 21st century when forced by increasing levels of greenhouse gas…”
Get full text

Biology and air–sea gas exchange controls on the distribution of carbon isotope ratios (δ 13 C) in the ocean by Schmittner, A, Gruber, N, Mix, A. C, Key, R. M, Tagliabue, A, Westberry, T. K

“…Analysis of observations and sensitivity experiments with a new three-dimensional global model of stable carbon isotope cycling elucidate processes that…”
Get full text

Glacial ocean overturning intensified by tidal mixing in a global circulation model by Schmittner, A., Green, J. A. M., Wilmes, S.-B.

“…Due to lower sea levels during the Last Glacial Maximum (LGM), tidal energy dissipation was shifted from the shallow margins into the deep ocean. Here using a…”
Get full text

Southwest Atlantic water mass evolution during the last deglaciation by Lund, D. C., Tessin, A. C., Hoffman, J. L., Schmittner, A.

“…The rise in atmospheric CO2 during Heinrich Stadial 1 (HS1; 14.5–17.5 kyr B.P.) may have been driven by the release of carbon from the abyssal ocean. Model…”
Get full text

Isotopic constraints on the pre-industrial oceanic nitrogen budget by Somes, C. J, Oschlies, A, Schmittner, A

“…The size of the bioavailable (i.e., "fixed") nitrogen inventory in the ocean influences global marine productivity and the biological carbon pump. Despite its…”
Get full text

Simulating the impact of the Panamanian seaway closure on ocean circulation, marine productivity and nutrient cycling by Schneider, Birgit, Schmittner, Andreas

“…The closure of the Panama Isthmus, ∼14–3 Ma, caused large reorganizations of ocean circulation. Here we use a global climate–ocean ecosystem model to…”
Get full text

Southern Ocean sea ice and radiocarbon ages of glacial bottom waters by Schmittner, A

Get full text

Glacial Ice Sheet Extent Effects on Modeled Tidal Mixing and the Global Overturning Circulation by Wilmes, S.‐B., Schmittner, A., Green, J. A. M.

“…At present, tides supply approximately half (1 TW) of the energy necessary to sustain the global deep meridional overturning circulation (MOC) through…”
Get full text

Climatic Consequences of a Pine Island Glacier Collapse by Green, J. A. M., Schmittner, A.

“…An intermediate-complexity climate model is used to simulate the impact of an accelerated Pine Island Glacier mass loss on the large-scale ocean circulation…”
Get full text

An improved parameterization of tidal mixing for ocean models by Schmittner, A, Egbert, G. D

“…Two modifications to an existing scheme of tidal mixing are implemented in the coarse resolution ocean component of a global climate model. First, the vertical…”
Get full text

A global model of the marine ecosystem for long-term simulations: Sensitivity to ocean mixing, buoyancy forcing, particle sinking, and dissolved organic matter cycling by Schmittner, A., Oschlies, A., Giraud, X., Eby, M., Simmons, H. L.

“…A new model of the marine ecosystem coupled into a global Earth System Climate Model suitable for long‐term (multimillennial timescale) simulations is…”
Get full text

Mid-Pliocene shifts in ocean overturning circulation and the onset of Quaternary-style climates by Sarnthein, M., Bartoli, G., Prange, M., Schmittner, A., Schneider, B., Weinelt, M., Andersen, N., Garbe-Schönberg, D.

“…A major tipping point of Earth's history occurred during the mid-Pliocene: the onset of major Northern-Hemisphere Glaciation (NHG) and of pronounced,…”
Get full text

Early deglacial Atlantic overturning decline and its role in atmospheric CO 2 rise inferred from carbon isotopes (δ 13 C) by Schmittner, A., Lund, D. C.

“…The reason for the initial rise in atmospheric CO2 during the last deglaciation remains unknown. Most recent hypotheses invoke Southern Hemisphere processes…”
Get full text

Coupling of the hemispheres in observations and simulations of glacial climate change by Schmittner, A., Saenko, O.A., Weaver, A.J.

“…We combine reconstructions, climate model simulations and a conceptual model of glacial climate change on millennial time scales to examine the relation…”
Get full text

Evaluation of a present-day climate simulation with a new coupled atmosphere-ocean model GENMOM by Alder, J R, Hostetler, S W, Pollard, D, Schmittner, A

“…We present a new, non-flux corrected AOGCM, GENMOM, that combines the GENESIS version 3 atmospheric GCM (Global Environmental and Ecological Simulation of…”
Get full text

Calcium carbonate production response to future ocean warming and acidification by Pinsonneault, A. J, Matthews, H. D, Galbraith, E. D, Schmittner, A

“…Anthropogenic carbon dioxide (CO2) emissions are acidifying the ocean, affecting calcification rates in pelagic organisms, and thereby modifying the oceanic…”
Get full text