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Biogeochemical modeling

CMI is developing models of global biogeochemical cycles driven by MITgcm. Our main aims are to:

understand, model and describe the role of ocean circulation and its variability in controlling and modulating global biogeochemical cycles.
understand and describe the feedbacks between climate and biogeochemical processes.
use tracers to extract quantitative information about the rates of communication between the surface and the deep ocean.

 

A Selection of Current CMI/ Biogeochemical Modeling Projects:

click here to access more Darwin Project research

 

Publications:

In press:

Bragg, J., S. Dutkiewicz, Oliver Jahn, M.J. Follows, and S.W. Chisholm (2010) Modeling selective pressures on phytoplankton in the global ocean. Accepted for publication in PLoSone

McGuire, A.D., D.J.Hayes, D.W.Kicklighter, M.Manizza, Q.Zhuang, M.Chen, M.J.Follows, K.R.Gurney, J.W.McClelland, J.M.Melillo, B.J.Peterson and R.G.Prinn (2010) An analysis of the carbon balance of the Arctic Basin from 1997 to 2006. Submitted to Tellus.

Hickman, A. E., S. Dutkiewicz, R. G. Williams and M. J. Follows (2010) Modelling the effects of chromatic adaptation on phytoplankton community structure in the oligotrophic ocean. Submitted to MEPS.

Omta, A.-W., P.A. Goodwin and M.J. Follows (2010) Multiple regimes of air-sea carbon partitioning identified from constant-alkalinity buffer factors. Submitted to Global Biogeochemical Cycles.

Published:

Barton, A.D., S. Dutkiewicz, G. Flierl, J. Bragg, and M.J. Follows, 2010:
Patterns of Diversity in Marine Phytoplankton.
Science, 10.1126/science.1184961. (Science Express Reports)

2009

Anderson, T., and M.J. Follows (2009) Representing plankton functional types in ocean general circulation models: competition, tradeoffs and self-organizing architecture. Submitted to IEEE Proceedings (ICECCS 2010 Special Session: Complex Systems Modelling and Simulation).

Dutkiewicz, S., M. J. Follows, and J. G. Bragg, 2009:
Modeling the coupling of ocean ecology and biogeochemistry,
Global Biogeochem. Cycles , 23, GB4017, doi:10.1029/2008GB003405. PDF

Ullman, D. J., G. A. McKinley, V. Bennington, and S. Dutkiewicz, 2009:
Trends in the North Atlantic carbon sink: 1992-2006,
Global Biogeochem. Cycles , 23, GB4011, doi:10.1029/2008GB003383. PDF

Manizza, M., M. J. Follows, S. Dutkiewicz, J. W. McClelland, D. Menemenlis,
C.N. Hill, A. Townsend-Small, and B. J. Peterson, 2009:
Modeling transport and fate of riverine dissolved organic carbon in the Arctic Ocean,
Global Biogeochemical Cycles , 23, GB4006, doi:10.1029/2008GB003396. PDF

Bennington,V., G. A. McKinley, S. Dutkiewicz, and D. Ullman, 2009:
What does chlorophyll variability tell us about export and air-sea CO2 flux variability in the North Atlantic?
Global Biogeochemical Cycles, 23, GB3002, doi:10.1029/2008GB003241. PDF

Gruber, N., M. Gloor, S.E. Mikaloff-Fletcher, S.C. Doney, S. Dutkiewicz, M. Follows, M. Gerber,
A.R. Jacobson, F. Joos, K. Lindsay, D. Menemenlis, A. Moucheta S.A. Muller, J. L. Sarmiento,
and T. Takahashi, 2009:
Oceanic sources, sinks and transport of atmospheric CO2.
Global Biogeochemical Cycles, 23, GB1005, doi:10.1029/2008GB003349. PDF

Goebel, N., C.A. Edwards, J.P. Zehr and M.J. Follows (2009) An emergent community ecosystem model applied to the California Current System Submitted to J. Marine Sys.

Monteiro, F., M.J. Follows and S. Dutkiewicz (2009) Distribution of diverse nitrogen fixers in the global ocean. Submitted to Global Biogeochemical Cycles.

Verdy, A., M. Follows and G. Flierl (2009) Evolution of phytoplankton cell size in an allometric model. Marine Ecology Progress Series, 379, 1-12 pdf

Goodwin, P., R.G. Williams, A. Ridgewell and M.J. Follows (2009) Climate sensitivity of the carbon cycle to past and future changes in ocean chemistry. Nature Geoscience, doi:10.1038/ngeo416 pdf

2008

Cermeno, P., S. Dutkiewicz, R. Harris, M.J. Follows, O. Schofield, P. Falkowski (2008) The role of nutricline depth in regulating the ocean carbon cycle. PNAS 105(51), 20344-20349, doi: 10.1073/pnas.0811302106 pdf

Goodwin, P.A., M.J. Follows and R.G. Williams (2008) Analytical relationships between atmospheric carbon dioxide, carbon emissions and ocean processes. Global Biogeochem. Cycles, 22, GB3030, doi:10.1029/2008GB003184 pdf

Marinov, I., A. Gnanadesikan, J. L. Sarmiento, J. R. Toggweiler, M. Follows, and B. K. Mignone (2008), Impact of oceanic circulation on biological carbon storage in the ocean and atmospheric pCO2, Global Biogeochem. Cycles, 22, GB3007, doi:10.1029/2007GB002958. pdf

Marinov, I., M.Follows, A.Gnanadesikan, J.L.Sarmiento, and R.D.Slater (2008) How does ocean biology affect atmospheric pCO2? Theory and models J. Geophys. Res., 113, C07032, doi: 10.1029/2007JC004598. pdf

Berman-Frank, I., Y.-B. Chen, Y. Gao, K. Fennel, M.J. Follows, A. Milligan and P. Falkowski (2008) Feedbacks between the nitrogen, oxygen and carbon cycles. Chapter in Nitrogen in the Marine Environment , editors Capone, D. G., D. A. Bronk, M. R. Mulholland and E.J. Carpenter. Elsevier, pp. 1537-1557. pdf

Hansell, D., and M.J. Follows (2008) Nitrogen in the Atlantic Ocean. Chapter in Nitrogen in the Marine Environment , editors Capone, D. G., D. A. Bronk, M. R. Mulholland and E.J. Carpenter. Elsevier, pp. 597-623. pdf

2007

Boyd, P.W., T. Jickells, C.S. Law, S. Blain, E.A. Boyle, K.O. Buesseler, K.H. Coale, J.J. Cullen, H.J.W. de Baar, M.J. Follows, M. Harvey, C. Lancelot, M. Levasseur, R. Pollard, R.B. Rivkin, J. Sarmiento, V. Schoemann, V. Smetacek, S. Takeda, A. Tsuda, S. Turner, A.J. Watson (2007) A synthesis of mesoscale iron-enrichment experiments 1993-2005: key findings and implications for ocean biogeochemistry. Science, 315: 612-617 [DOI: 10.1126/science.1131669].

Follows, M.J., S. Dutkiewicz, S. Grant and S.W. Chisholm (2007) Emergent biogeography of microbial communities in a model ocean. Science, 315, 1843-1846, [DOI: 10.1126/science.1138544]: Link to abstract and link to full text.

Friis, K., R. Najjar, M.J. Follows, S. Dutkiewicz, A. Kortziner, and K. M. Johnson, 2007:
Dissolution of calcium carbonate: observations and model results in the subpolar North Atlantic.
Biogeosciences , 4, 205-213. LINK

Goodwin, P., R.G. Williams, M.J. Follows, and S. Dutkiewicz, 2007:
The Ocean-Atmosphere Partitioning of Anthropogenic Carbon Dioxide on Centennial Timescales.
Global Biogeochemical Cycles, 21, GB1014, doi:10.1029/2006GB002810. PDF

Hood, R.A., E.A. Laws, M.J. Follows and D.A. Siegel (2007) Modeling and prediction of microbial populations in the genomic era. Oceanography, 20, 155-165. pdf

Mikaloff Fletcher, S.E., N.P. Gruber, A.R. Jacobson, M. Gloor, S.C. Doney, S. Dutkiewicz,
M. Gerber, M. Follows, K. Lindsay, D. Menemenlis, A. Mouchet, S.A. Muller, and J. Sarmiento, 2007:
Inverse estimates of the oceanic sources and sinks of natural CO2 in and their implied oceanic transport.
Global Biogeochemical Cycles , 21, GB1010, doi:10.1029/2006GB002751. PDF

Najjar, R.G., X. Jin, F. Louanchi, O. Aumont, K. Caldeira, S. C. Doney, J.-C. Dutay, M. Follows, N. Gruber, F. Joos, K. Lindsay, E. Maier-Reimer, R. J. Matear, K. Matsumoto, P. Monfray, A. Mouchet, J. C. Orr, G. K. Plattner, J. L. Sarmiento, R. Schlitzer, M. F. Weirig, Y. Yamanaka and A. Yool (2007) Impact of circulation on export production, dissolved organic matter and dissolved oxygen in the ocean: Results from OCMIP2. Global Biogeochem. Cycles, 21, GB3007, doi:10.1029/2006GB002857. pdf

Verdy, A., S. Dutkiewicz, M. J. Follows, J. Marshall, and A. Czaja (2007), Carbon dioxide and oxygen fluxes in the Southern Ocean: Mechanisms of interannual variability, Global Biogeochem. Cycles, 21, GB2020, doi:10.1029/2006GB002916. pdf

2006

Dutkiewicz, S., M. Follows, P. Heimbach, and J. Marshall, 2006:
Controls on ocean productivity and air-sea carbon flux: an adjoint model sensitivity study.
Geophysical Research Letters, 33, L02603, doi:10.1029/2005GL024987. PDF

Follows, M., T. Ito and S. Dutkiewicz, 2006:
A Compact and Accurate Carbonate Chemistry Solver for Ocean Biogeochemistry Models.
Ocean Modeling, 12, 290-301. PDF

Follows, M.J., S. Dutkiewicz, and T. Ito (2006) On the solution of the carbonate system in ocean biogeochemistry models. Ocean Modelling, 12, 290-301. pdf

Friis, K., R. Najjar, M.J. Follows, and S. Dutkiewicz, 2006:
Possible overestimation of shallow-depth calcium carbonate dissolution in the ocean.
Global Biogeochemical Cycles, 20, GB4019, doi:10.1029/2006GB002727. PDF

Mikaloff Fletcher, S.E., N.P. Gruber, A.R. Jacobson, S.C. Doney, S. Dutkiewicz, M. Follows,
K. Lindsay, D. Menemenlis, A. Mouchet, and J. Sarmiento, 2006:
Inverse estimates of anthropogenic CO2 uptake, transport, and storage by the ocean.
Global Biogeochemical Cycles , 20, GB2002, doi:10.1029/2005GB002530. PDF

Parekh, P., S. Dutkiewicz, M. Follows, and T. Ito, 2006:
Atmospheric carbon dioxide in a less dusty world.
Geophysical Research Letters, 33, L03610, doi:10.1029/2005GL025098. PDF

Parekh, P., M. J. Follows, S. Dutkiewicz, and T. Ito, 2006:
Physical and biological regulation of the soft tissue carbon pump.
Paleoceanography , 21, PA3001, doi:10.1029/2005PA001258. PDF

Rothstein, L.M., J.J. Cullen, M. Abbott, E.P.Chassignet, K. Denman, S.C. Doney, H. Ducklow, K. Fennel, M. Follows, D. Haidvogel, E. Hoffman, D.M. Karl, J. Kindle, I. Lima, M. Maltrud, C. McClain, D. McGillicuddy, M.J. Olascoaga, Y. Spitz, J. Wiggert and J. Yoder (2006) Modeling Ocean Ecosystems: The PARADIGM Program. Oceanography, 19, 22-51. pdf

Williams, R.G., V. Roussenov and M.J. Follows (2006) Induction of nutrients into the mixed layer and maintenance of high latitude productivity. Global Biogeochem. Cycles, 20, GB1016, doi:10.1029/2005GB002586. pdf

2005

Dutkiewicz, S., M. Follows, and P. Parekh, 2005:
Interactions of the iron and phosphorus cycles: a three-dimensional model study.
Global Biogeochemical Cycles, 19, GB1021, doi:10.1029/2004GB002342. PDF

Dutkiewicz, S.W., P. Parekh, T. Ito and M.J. Follows (2005) Interactions of the iron and phosphorus cycles: A modelling study. Global Biogeochem. Cycles. 19, GB1021, doi:10.1029/2004GB002342 pdf

Fennel, K., M.J. Follows, and P. Falkowski (2005) The co-evolution of the nitrogen, carbon and oxygen cycles in the Proterozoic ocean. American Journal of Science, 305, 526-545. pdf

Ito, T., P. Parekh, S. Dutkiewicz, and M. Follows, 2005:
The Antarctic Productivity Belt.
Geophysical Research Letters, 32, doi:10.1029/2005GL023021. PDF

Ito, T., and M.J. Follows (2005) Preformed phosphate, soft tissue pump and atmospheric CO2. J. Marine Res., 63(4), 813-839, DOI: 10.1357/0022240054663231 pdf

Parekh, P., M.J. Follows, and E.A. Boyle (2005) Decoupling of iron and phosphate in the global ocean. Global Biogeochem. Cycles. 19, GB2020, 10.1029/2004GB002280 pdf

2004

S.C. Doney, K. Lindsay, K. Caldeira, J.-M. Campin, H. Drange, J.-C. Dutay, M. Follows, Y. Gao, A. Gnanadesikan, N. Gruber, A. Ishida, F. Joos, G. Madec, E. Maier-Reimer, J.C. Marshall, R.J. Matear, P. Monfray, A. Mouchet, R. Najjar, J.C. Orr, G.-K. Plattner, J.L. Sarmiento, R. Schlitzer, R. Slater, I.J. Totterdell, M.-F. Weirig, Y. Yamanaka, A. Yool (2004) Evaluating global ocean carbon models: The importance of realistic physics, Global Biogeochem. Cycles, 18, GB3017, doi:10.1029/2003GB002150. pdf

Follows, M.J. and R.G.Williams (2004) Mechanisms controlling the air-sea flux of CO2 in the North Atlantic. In "The Ocean Carbon Cycle and Climate", NATO-ASI volume, Kluwer. eds. M.J. Follows and T. Oguz. pdf

Hill, C.N., V. Bugion, M.J. Follows and J.C. Marshall (2004) Evaluating carbon sequestration efficiency in an ocean model using adjoint sensitivity analysis. J. Geophys. Res., 109, C11005, doi:10.1029/2002JC001598. pdf

Ito, T., M.J. Follows and E.A. Boyle (2004) Is AOU a good measure of respiration in the oceans? Geophys. Res. Lett., 31, L17305, doi:10.1029/2004GL020900. pdf

Ito, T., J.C. Marshall and M.J. Follows (2004) What controls the uptake of transient tracers in the Southern Ocean? Global Biogeochem. Cycles., 18, GB2021, doi:10.1029/2003GB002103 pdf

Matsumoto, K., J.L. Sarmiento, R.M. Key, O. Aumont, J.L. Bullister, K. Caldeira, J.-M. Campin, S.C. Doney, H. Drange, J.-C. Dutay, M. Follows, Y. Gao, A. Gnanadesikan, N. Gruber, A. Ishida, F. Joos, K. Lindsay, E. Maier-Reimer, J.C. Marshall, R.J. Matear, P. Monfray, R. Najjar, G.-K. Plattner, R. Schlitzer, R. Slater, P.S. Swathi, I.J. Totterdell, M.-F. Weirig, Y. Yamanaka, A. Yool, J.C. Orr (2004) Evaluation of ocean carbon cycle models with data-based metrics, Geophys. Res. Lett., 31, L07303, doi:10.1029/2003GL018970 pdf

McKinley, G., M.J. Follows and J.C. Marshall (2004) Mechanisms of air-sea CO2 flux variability in the Equatorial Pacific and the North Atlantic. Global Biogeochemical Cycles, 18, doi:10.1029/2003GB002179 pdf

Parekh, P., M.J. Follows, and E.A. Boyle (2004a) Modeling the global ocean iron cycle. Global Biogeochem. Cycles., 18, GB1002, doi:10.1029/2003GB002061 pdf

Roussenov, V., R.G. Williams, M.J. Follows and R.M. Key (2004) The role of bottom water transport and diapycnic mixing in determining the radiocarbon distribution in the Pacific. J. Geophys. Res. 109(C6), C06015, doi: 10.1029/2003JC002188. pdf

2003

Ito, T., and M.J. Follows (2003) Upper ocean control on the solubility pump of CO2. J. Marine Res., 61, 465-489. pdf

McKinley, G., M.J. Follows, J.C. Marshall and S.-M. Fan (2003) Interannual variability of air-sea O2 fluxes and the determination of CO2 sinks using atmospheric O2/N2. Geophysical Research Letters, 30(3), 1101, 10.1029/2002GL016044. pdf

Williams, R.G. and M.J. Follows (2003) Physical transport of nutrients and the maintenance of biological production, in Ocean Biogeochemistry, edited by M.Fasham, Springer-Verlag. pdf

2002

Dutay, J.-C., J. Bullister, S. Doney, J. Orr, R. Najjar, K. Caldeira, J.-M. Champin, H. Drange, M. Follows, Y. Gao, N. Gruber, D. Hecht, A. Ishida, F. Joos, K. Lindsay, Madec, E. Maier-Reimer, J. Marshall, R. Matear, P. Monfray, Plattner, J. Sarmiento, R. Schlitzer, R. Slater, I. Totterdell, M.F. Weirig, Y. Yamanaka, , and A. Yool (2002) Evaluation of ocean model ventilation with CFC-11: Comparison of 13 global ocean models. Ocean Modelling, 4, 89-120. pdf

Follows, M.J., T. Ito and J. Marotzke (2002) The oceans subtropical gyres and atmospheric pCO2. Global Biogeochem. Cycles., 16, 1113, doi:10.1029/2001GB001786 pdf

Follows, M.J. and S.W. Dutkiewicz (2002) Meteorological modulation of the North Atlantic spring bloom. Deep-Sea Res. II, 49, 321-344. pdf

Gildor, H, and M.J. Follows (2002) Two-way interactions between ocean biota and climate mediated by biogeochemical cycles. Israel Journal of Chemistry, 42, 15-27.

Zhang R., M.J. Follows and J.C. Marshall (2002) Mechanisms of thermohaline mode switching with application to warm equable climates. J. of Climate, Vol. 15, 2,056-2,072. pdf

2001

Dutkiewicz, S.W., Follows, M.J., J.C. Marshall and W.W. Gregg (2001) Interannual variability of phytoplankton abundance in the North Atlantic. Deep-Sea Res. II., 48, 2323-2344. abstract, pdf

Doney, S.C, I. Lima, K. Lindsay, J.K. Moore, S. Dutkiewicz, M.A.M. Friedrichs and R.J. Matear, 2001:
Marine Biogeochemical Modeling.
Oceanography , 14-4, 93 -- 107.

Zhang R., M.J. Follows, J. Grotzinger and J.C. Marshall (2001) Could the Late Permian, deep ocean have been Anoxic? Paleoceanography, 16, 317-329. pdf

2000

McKinley, G., M.J. Follows and J.C. Marshall (2000) Interannual variability of oxygen fluxes in the North Atlantic. Geophys. Res. Lett.,27, 2933-2936. pdf

Williams, R.G., A. McLaren and M.J. Follows (2000) Interannual variability in the convective and Ekman supply of nitrate to the euphotic zone over the the North Atlantic. Global Biogeochem. Cycles., 14, 1299-1313. pdf

1999

Follows, M.J., D. Stammer and C. Wunsch (1999) Ventilation of CFC-11 in a global ocean circulation model constrained by WOCE data. International WOCE Newsletter, 35, 3-5. abstract

1998

Williams R.G., and M.J. Follows (1998) Estimating new production over the North Atlantic due to the climatological Ekman supply of nutrients. Deep-Sea Res. , 45, 461-489. pdf

1996

Follows, M.J., R.G. Williams, and J.C. Marshall (1996) The solubility pump of carbon in the subtropical gyre of the North Atlantic. J. Marine Res., 54, 605-630. abstract

Follows, M.J. and J.C. Marshall (1996) On models of bomb 14C in the North Atlantic. J. Geophys. Res., 101, 22,577-22,582. abstract