Scientific Commons: J. L. Sarmiento

Detection of anthropogenic climate change in satellite records of ocean chlorophyll and productivity (2010)

S. A. Henson, J. L. Sarmiento, J. P. Dunne, L. Bopp, I. Lima, S. C. Doney, ...

Global climate change is predicted to alter the ocean's biological productivity. But how will we recognise the impacts of climate change on ocean productivity? The most comprehensive information...

A new estimate of the CaCO 3 to organic carbon export ratio (2009)

J. L. Sarmiento, J. Dunne, A. Gnanadesikan, R. M. Key, K. Matsumoto, R. Slater

[1] We use an ocean biogeochemical-transport box model of the top 100 m of the water column to estimate the CaCO3 to organic carbon export ratio from observations of the vertical gradients of...

Central role of Southern Hemisphere winds and eddies in modulating the oceanic uptake of anthropogenic carbon (2009)

Bryan K. Mignone, Jorge L. Sarmiento, Richard D. Slater, Citation Mignone, A. Gnanadesikan, J. L. Sarmiento

[1] Although the world ocean is known to be a major sink of anthropogenic carbon dioxide, the exact processes governing the magnitude and regional distribution of carbon uptake remain poorly...

Representation of the carbon cycle in box models and GCMs: 1. Solubility pump (2009)

J. R. Toggweiler, A. Gnanadesikan, S. Carson, R. Murnane, J. L. Sarmiento

[1] Bacastow [1996], Broecker et al. [1999], and Archer et al. [2000] have called attention recently to the fact that box models and general circulation models (GCMs) represent the thermal...

Representation of the carbon cycle in box models and GCMs 2. Organic pump (2009)

J. R. Toggweiler, R. Murnane, S. Carson, A. Gnanadesikan, J. L. Sarmiento

[1] Box models of the ocean/atmosphere CO2 system rely on mechanisms at polar outcrops to alter the strength of the ocean’s organic carbon pump. GCM-based carbon system models are reportedly less...

Is global warming already changing ocean productivity? (2009)

S. A. Henson, J. L. Sarmiento, J. P. Dunne, L. Bopp, I. Lima, S. C. Doney, ...

Global warming is predicted to alter the ocean's biological productivity. But how will we recognise the impacts of climate change on ocean productivity? The most comprehensive information available...

Efficiency of small scale carbon mitigation by patch iron fertilization (2009)

J. L. Sarmiento, R. D. Slater, J. Dunne, A. Gnanadesikan, M. R. Hiscock

While nutrient depletion scenarios have long shown that the high-latitude High Nutrient Low Chlorophyll (HNLC) regions are the most effective for sequestering atmospheric carbon dioxide, recent...

Trends and regional distributions of land and ocean carbon sinks (2009)

J. L. Sarmiento, M. Gloor, N. Gruber, C. Beaulieu, A. R. Jacobson, S. M. Fletcher, ...

We show here a new estimate of the variability and long-term trends in the net land carbon sink from 1960 onwards calculated from the difference between fossil fuel emissions, the observed...

Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) (2007)

Najjar, R.G., Jin, X., Louanchi, F., Aumont, O., Caldeira, K., Doney, S.C., ...

Results are presented of export production, dissolved organic matter (DOM) and dissolved oxygen simulated by 12 global ocean models participating in the second phase of the Ocean Carbon-cycle Model...

Mesoscale iron enrichment experiments 1993-2005: synthesis and future directions (2007)

Boyd, P., Jickells, T., Law, C.S., Blain, S., Boyle, E.A., Buessler, K.O., ...

Since the mid-1980s, our understanding of nutrient limitation of oceanic primary production has radically changed. Mesoscale iron addition experiments (FeAXs) have unequivocally shown that iron...

Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) (2007)

Najjar, R. G., Jin, X., Louanchi, F., Aumont, O., Caldeira, K., Doney, S. C., ...

Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) (2007)

Najjar, R. G., Jin, X., Louanchi, F., Aumont, O., Caldeira, K., Doney, S., ...

Results are presented of export production, dissolved organic matter (DOM) and dissolved oxygen simulated by 12 global ocean models participating in the second phase of the Ocean Carbon-cycle Model...

Inverse estimates of anthropogenic CO2 uptake, transport, and storage by the ocean (2006)

Fletcher, SEM, Gruber, N, Jacobson, A R, Doney, S C, Dutkiewicz, S, Gerber, M, ...

[1] Regional air-sea fluxes of anthropogenic CO2 are estimated using a Green's function inversion method that combines data-based estimates of anthropogenic CO2 in the ocean with information about...

Sensitivity of inverse estimation of annual mean CO2 sources and sinks to ocean-only sites versus all-sites observational networks - art. no. L05814 (2006)

Patra, P. K., Gurney, K. R., Denning, A. S., Maksyutov, S., Nakazawa, T., Baker, D., ...

On error estimation in atmospheric CO2 inversions (vol 107, pg 4635, 2002) - art. no. D14199 (2006)

Engelen, R. J., Denning, A. S., Gurney, K. R., Law, R. M., Rayner, P. J., Baker, D., ...

Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms (2005)

Orr,J. C., Fabry,V. J., Aumont,O., Bopp,L., Doney,S. C., Feely,R. A., ...

Today’s surface ocean is saturated with respect to calcium carbonate, but increasing atmospheric carbon dioxide concentrations are reducing ocean pH and carbonate ion concentrations, and thus the...

Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms (2005)

Orr, J. C., Fabry, V. J., Aumont, O., Bopp, L., Doney, S. C., Feely, R. A., ...

Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms (2005)

Orr, J.C., Fabry, V.J., Aumont, O., Bopp, L., Doney, S.C., Feely, R.A., ...

Today's surface ocean is saturated with respect to calcium carbonate, but increasing atmospheric carbon dioxide concentrations are reducing ocean pH and carbonate ion concentrations, and thus the...

Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms (2005)

Orr, J. C., Fabry, V. J., Aumont, O., Bopp, L., Doney, S. C., Feely, R. A., ...

Today’s surface ocean is saturated with respect to calcium carbonate, but increasing atmospheric carbon dioxide concentrations are reducing ocean pH and carbonate ion concentrations, and thus the...

Evaluating Global Ocean Carbon Models: The Importance of Realistic Physics (2004)

Doney, S. C., Lindsay, K., Caldeira, Ken, Campin, J. M., Drange, Helge, Dutay, J. C., ...

A suite of standard ocean hydrographic and circulation metrics are applied to the equilibrium physical solutions from 13 global carbon models participating in phase 2 of the Ocean Carbon-cycle Model...

Evaluation of ocean carbon cycle models with data-based metrics (2004)

Matsumoto,K., Sarmiento,J. L., Key,R. M., Aumont,O., Bullister,J. L., Caldeira,K., ...