Andreas Schmittner Associate Professor College of Oceanic and Atmospheric Sciences Oregon State University 104 COAS Admin Bldg Corvallis OR 97331-5503 USA phone: 541-737-9952 fax: 541-737-2064 email: aschmitt(at)coas.oregonstate.edu CV Blog: Paleoclimate

Online Lecture: Climate Change and Ocean Circulation Book: Ocean Circulation: Mechanisms and Impacts Projects: PALEOVAR: Past Climate Variability Reconstructing Glacial Nitrogen and Carbon Cycling Using Isotopes Teaching: OC599 Introduction to Climate Modeling OC331 Introduction to Ocean Sciences ATS320 Man’s Impact on Climate

Models: University of Victoria Earth System Model (UVic) Oregon State University / University of Victoria Model (OSUVic) News Online news articles about my research Climate Change: Accessible Science Links

Publications:
1997 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 in press submitted

Articles in peer reviewed publications

2012

Ross, A., Matthews, H. D., Schmittner, A., and Kothavala, Z. (2012)

Assessing the Effects of Ocean Diffusivity and Climate Sensitivity on the Rate of Global Climate Change

Tellus B, 64, 17733, doi:10.3402/tellusb.v64i0.17733. html pdf

Shakun, J. D., Clark, P. U., He, F., Marcott, S. A., Mix, A. C., Liu, Z., Otto-Bliesner, B., Schmittner, A., and Bard, E.

Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation

Nature, 484, 49-54, doi:10.1038/nature10915. html pdf

Zhang, X., Prange, M., Steph, S., Butzin, M., Krebs, U., Lunt, D. J., Nisancioglu, K. H., Park, W., Schmittner, A., Schneider, B., Schulz, M. (2012)

Changes in equatorial Pacific thermocline depth in response to Panamanian Seaway closure: Insights from a multi-model study

Earth and Planet. Sci. Lett., 317-318, 76-84, doi:10.1016/j.epsl.2011.11.028. html pdf

2011

Schmittner, A., Urban N. M., Shakun, J. D., Mahowald, N. M., Clark, P. U., Bartlein, P. J., Mix, A. C., and Rosell-Melé, A. (2011)

Climate Sensitivity Estimated From Temperature Reconstructions of the Last Glacial Maximum

Science, 334, 1385-1388, doi: 10.1126/science.1203513. Abstract pdf data

Zickfeld, K., Eby, M., Matthews, H. D., Schmittner, A., and Weaver, A. J.

Nonlinearity of carbon cycle feedbacks

J. Climate, 24, 4255–4275, doi: 10.1175/2011JCLI3898.1. pdf html

Marcott, S. A., Clark, P. U., Padman, L., Klinkhammer, G. P., Springer, S., Liu, Z., Otto-Bliesner, B. L., Carlson, A. E., Ungerer, A., Padman, J., He, F., Cheng, J. and Schmittner, A., (2011)

Ice-shelf collapse from subsurface warming as a trigger for Heinrich events

Proc. Nat. Acad. Sci., 108 (33), 13415-13419, doi:10.1073/pnas.1104772108 pdf html Supplementary Material

Schmittner, A., Silva, T. A. M., Fraedrich, K., Kirk, E. and Lunkeit, F. (2011)

Effects of Mountains and Ice Sheets on Global Ocean Circulation

J. Climate, 24, 2814–2829, doi:10.1175/2010JCLI3982.1. pdf html Supplementary Material Press Release

Alder, C. J., Hostetler, S. W., Pollard, D., and Schmittner, A. (2011)

Evaluation of a present-day climate simulation with a new coupled atmosphere-ocean model GENMOM

Geosi. Model Dev., 4, 69-83, doi:10.5194/gmd-4-69-2011. pdf html

2010

Somes, C. J., Schmittner, A. and Altabet, M. A. (2010)

Nitrogen isotope simulations show the importance of atmospheric iron deposition for nitrogen fixation across the Pacific Ocean

Geophys. Res. Lett., 37, L23605, doi:10.1029/2010GL044537. pdf html

Goes, M., Urban, N. M., Tonkonojenkov, R., Haran, M., Schmittner, A., and Keller, K., (2010)
What is the skill of ocean tracers in reducing uncertainties about ocean diapycnal mixing and projections of the Atlantic Meridional Overturning Circulation?

J. Geophys. Res., 115, C12006, doi:10.1029/2010JC006407. pdf html

Somes, C. J., Schmittner, A., Galbraith, E. D., Lehmann, M. F., Altabet, M. A., Montoya, J. P., Letelier, R. M., Mix, A. C., Bourbonnais, A., and Eby, M. (2010)

Simulating the global distribution of nitrogen isotopes in the ocean

Global Biogeochem. Cycles, 24, GB4019, doi:10.1029/2009GB003767. pdf html Supplementary Material

2009

Schmittner, A., N. M. Urban, K. Keller, and D. Matthews (2009)

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

Global Biogeochem. Cycles, 23, GB4009, doi:10.1029/2008GB003421. pdf html

Sarnthein, M., G. Bartoli, M. Prange, A. Schmittner, B. Schneider, M. Weinelt, N. Andersen, and D..Garbe-Schonberg (2009)

Mid-Pliocene shifts in ocean overturning circulation and the onset of Quaternary-style climates

Clim. Past, 5, 269-283, doi:10.5194/cp-5-269-2009. pdf html

2008

Schmittner, A., E. D. Galbraith (2008)

Glacial greenhouse gas fluctuations controlled by ocean circulation changes

Nature, 456, 373-376, doi:10.1038/nature07531. pdf html supplementary information

Oschlies, A., K. G. Schulz, U. Riebesell, and A. Schmittner (2008)

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

Global Biogeochem. Cycles, 22, GB4008, doi:10.1029/2007GB003147. pdf html

Schmittner, A., A. Oschlies, H. D. Matthews, and E. D. Galbraith (2008)

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

Global Biogeochem. Cycles, 22, GB1013, doi:10.1029/2007GB002953. pdf html Correction

2007

Clark, P. U., S. W. Hostetler, N. G. Pisias, A. Schmittner, and K. J. Meissner (2007)

Mechanisms for a ~7-kyr climate and sea-level oscillation during marine isotope stage 3

in Ocean Circulation: Mechanisms and Impacts, AGU Geophys. Monograph, vol. 173, edited by Schmittner, A., J. Chiang, and S. Hemming, pp. 315-334, American Geophysical Union. pdf

Schmittner, A., E. Brook and J. Ahn (2007)

Impact of the ocean’s overturning circulation on atmospheric CO₂

in Ocean Circulation: Mechanisms and Impacts, AGU Geophysical Monograph Series, vol. 173, edited by A. Schmittner, J. Chiang, and S. Hemming, pp. 209-246, American Geophysical Union. pdf

Schmittner, A., E. D. Galbraith, S. W. Hostetler, T. F. Pedersen, and R. Zhang (2007)

Large fluctuations of dissolved oxygen in the Indian and Pacific oceans during Dansgaard-Oeschger oscillations caused by variations of North Atlantic Deep Water subduction

Paleoceanogr., 22, PA3207, doi:10.1029/2006PA001384. pdf html data available at ftp://ftp.ncdc.noaa.gov/pub/data/paleo/gcmoutput/uvic/schmittner2007/

Schneider, B., M. Latif, and A. Schmittner (2007)

Evaluation of different methods to assess model projections of the future evolution of the Atlantic meridional overturning circulation

J. Climate, 20, 2121-2132. pdf

2006

Schneider, B. and A. Schmittner (2006)

Simulating the impact of the Panamanian seaway closure on ocean circulation, marine productivity and nutrient cycling

Earth and Planet. Sci. Lett., 246, 367–380. pdf

2005

Schmittner, A., Latif, M. and Schneider, B. (2005)

Model Projections of the North Atlantic thermohaline circulation for the 21st century assessed by observations

Geophys. Res. Lett., 32, L23710, doi:10.1029/2005GL024368. pdf html

Schmittner, A., Oschlies, A., Giraud, X., Eby, M. and Simmons H.L. (2005)

A Global Model of the Marine Ecosystem for Long Term Simulations: Sensitivity to Ocean Mixing, Buoyancy Forcing, Particle Sinking and Dissolved Organic Matter Cycling

Global Biogeochem. Cycles, 19, GB3004, doi:10.1029/2004GB002283. pdf html

Schmittner, A., (2005)

Decline of the marine ecosystem caused by a reduction in the Atlantic overturning circulation

Nature, 434, 628-633. pdf html

Koesters, F., R. H. Kaese, A. Schmittner and P. Herrmann (2005)

The Effect of Denmark Strait Overflow on the Atlantic Meridional Overturning Circulation

Geophys. Res. Lett., 32, L04602, doi:10.1029/2004GL022112. pdf html

2004

Schmittner, A., M. Sarnthein, H. Kinkel, G. Bartoli, T. Bickert, M. Crucifix, D. Crudeli, J. Groeneveld, F. Kösters, U. Mikolajewicz, C. Millo, J. Reimer, P. Schäfer, D. Schmidt, B. Schneider, M. Schulz, S. Steph, R. Tiedemann, M. (2004)

Global Impact of the Panamanian Seaway Closure

EOS, 85, 526. pdf

Saenko, O. A., Schmittner, A. and A. J. Weaver (2004)

The Atlantic-Pacific seesaw

J. Climate, 17, 2033-2038. pdf

Ewen, T., A.J. Weaver and A. Schmittner (2004)

Modelling carbon cycle feedbacks during abrupt climate change

Quat. Sci. Rev., 23, 431-448. pdf

2003

Saenko, O. A., A. J. Weaver and A. Schmittner (2003)

Atlantic deep circulation controlled by freshening in the Southern Ocean

Geophys. Res. Lett., 30, 1754, doi:10.1029/2003GL017681. pdf html (you need online access to AGU journals)

Schmittner, A. (2003)

Southern Ocean sea ice and radiocarbon ages of glacial bottom waters

Earth and Planet. Sci. Lett., 213, 53-62, doi:10.1016/S0012-821X(03)00291-7. pdf html

Meissner, K. J., Schmittner, A. and Weaver, A. J. (2003)

The ventilation of the North Atlantic Ocean during the Last Glacial Maximum - a comparison between simulated and observed radiocarbon ages

Paleoceanogr., 18 (2). doi:10.1029/2002PA000762. pdf html (you need online access to AGU journals)

Schmittner, A., Saenko, O. A. and Weaver,A. J. (2003)

Coupling of the hemispheres in observations and simulations of glacial climate change

Quat. Sci. Rev., 22, 659-671.doi:10.1016/S0277-3791(02)00184-1. pdf html

2002

Saenko, O. A., Schmittner, A. and Weaver, A. J. (2002)

On the role of wind-driven sea ice motion on ocean ventilation

J. Phys. Oceanogr., 32, 3376-3395. pdf

Meissner, K. J., Schmittner, A., Wiebe, E. C. and Weaver, A. J. (2002)
Simulations of Heinrich Events in a coupled ocean-atmosphere-sea ice model

Geophys. Res. Lett., 17, 10.1029/2001GL013514.

Schmittner, A., Meissner, K. J., Eby, M. and Weaver, A. J. (2002)

Forcing of the deep ocean circulation in simulations of the Last Glacial Maximum

Paleoceanogr., 17, 10.1029/2001PA000633. pdf html (you need online access to AGU journals)

Schmittner, A. and Clement, A. C. (2002)

Sensitivity of the thermohaline circulation to tropical and high latitude freshwater forcing during the last glacial-interglacial cycle

Paleoceanogr., 17, 10.1029/2000PA000591. pdf html (you need online access to AGU journals)

Schmittner, A., Yoshimori, M. and Weaver, A. J. (2002)

Instability of glacial climate in a model of the ocean-atmosphere-cryosphere system

Science, 295, 1489-1493. pdf Abstract

2001

Weaver, A. J., Eby, M., Wiebe, E. C., Bitz, C. M., Duffy, P. B., Ewen, T. L., Fanning, A. F., Holland, M. M., MacFadyen, A., Saenko, O., Schmittner, A., Wang, H. and Yoshimori,M. (2001)

The UVic Earth System Climate Model: Model Description, Climatology and Applications to Past, Present and Future Climates

Atmos.-Ocean, 4, 361-428. pdf

Schmittner, A. and Weaver, A. J. (2001)

Dependence of multiple climate states on ocean mixing parameters

Geoph. Res. Let., 28, 1027-1030. pdf

Schmittner, A. and Stocker, T. F., (2001)

A seasonally forced model for paleoclimate studies

J. Climate, 14, 1055-1068. pdf

2000

Appenzeller, C., Stocker, T.F., and Schmittner, A. (2000)

Climate change and natural climate variability: chance for surprise?

Integr. Assessment, 1, 301-306.

Schmittner, A., Appenzeller, C. and Stocker, T. F. (2000)

Enhanced Atlantic freshwater export during El Nino

Geoph. Res. Let., 27, 1163-1166. pdf

Schmittner, A., Appenzeller, C. and Stocker, T. F. (2000)

Validation of parametrisations for the meridional energy and moisture transport used in simple climate models

Clim. Dyn., 16, 63-77. pdf

1999

Joos, F., Plattner, G.-K., Stocker, T.F., Marchal, O. and Schmittner, A. (1999)

Global warming and marine carbon cycle feedbacks on future atmospheric CO2

Science, 284, 464-467. Abstract pdf

Schmittner, A. and Stocker, T. F. (1999)

The stability of the thermohaline circulation in global warming experiments

J. Climate, 12,1117-1133. pdf

1997

Stocker, T. F. and Schmittner, A. (1997)

Influence of CO₂ emission rates on the stability of the thermohaline circulation

Nature, 388, 862-865. html pdf

Articles in press:

Articles submitted:

Pinsonneault, A. J., Matthews, H. D., Galbraith, E. D., and Schmittner, A. (2011)

Calcium carbonate production response to future ocean warming and acidification

Biogeosciences.

Non peer-reviewed publications:

Schmittner, A., J. C. H. Chiang and S. Hemming (2007)

Introduction: The ocean's meridional overturning circulation

in Ocean Circulation: Mechanisms and Impacts, AGU Geophysical Monograph Series, vol. 173, edited by A. Schmittner, J. C. H. Chiang, and S. R. Hemming, pp. 1-4, American Geophysical Union. pdf

Schmittner, A. (2012)

Ice Age Lessons for Future Climate Change

in The Long View, vol. 9, Oregon State Bar Sustainable Future Section. pdf

Online News Articles About My Research:

November 2011:

New York Times “How Much Will the Earth Warm Up?”

Time “New Study Suggests Climate Change May Be (Slightly) Less Severe Than Feared”

Houston Chronicle “New study: Climate not as sensitive to carbon dioxide as some fear”

The Oregonian “Ice age analysis suggests global warming may be less severe than predicted”

New Scientist “CO2 may not warm the planet as much as thought”

The Daily Mail “Climate change fears 'have been exaggerated' and doomsday predictions are overestimates, say scientists”

The Australian “Climate forecasts ‘exaggerated’: Science journal

USA Today “Carbon dioxide doubling impact has limit ”

The Economist “Good news at last?”

BBC “CO2 climate sensitivity 'overestimated'”

Los Angeles Times “CO2 sensitivity possibly less than most extreme projections”

The Science Daily “Climate Sensitivity to Carbon Dioxide More Limited Than Extreme Projections, Research Shows”

Forbes “Climate Change: Not as Bad as We Thought it Was Going to Be”

The Sydney Morning Herald “New global warming estimate”

Washington Post “Most dire global warming forecasts unlikely, study finds”

Deutschlandfunk “Forscher versuchen Reaktion des Klimas auf Klimagas-Anstieg abzuschätzen”

Environmental Research Web “Is climate sensitivity lower than IPCC finding?”

Neue Züricher Zeitung “Das Klima ist möglicherweise robuster als gedacht”

ABC Science “Global warming rate less than feared”

New York Times “Study Finds Limited Sensitivity of Climate to CO2”

International Business Times “Climate Change Not so Extreme, Based on New Model”

Bits of Science “Good news? According to paleo research median CO2 climate sensitivity could be 0.7 degrees lower”

Ars Technica “Last big chill suggests lower climate impact of carbon ”

The Register “Global warming much less serious than thought - new science”

Sverige Radio “Stora temperaturökningar osannolika i ny studie”

Rinnovabili “Usa: la CO2 è una minaccia poco pericolosa per il clima”

Green Car Congress “Study using paleoclimate data suggests climate sensitivity to CO2 doubling may be less severe than projected”

Power Line “This Week in Climate News”

TG Daily “Global warming may not be as severe as predicted”

Ghana Business News “Carbon dioxide climate sensitivity overestimated”

NRK “Vi har forstatt tid”

Environmental Research Lab “Is climate sensitivity lower than IPCC finding?”

Biggovernment.com “Study Funded By National Science Foundation Concludes: ‘Global Warming Rate Less Than Feared’”

Inverstors.com “Global Warming Models Called Into Question By New Study”

Physorg.com “Climate sensitivity to CO2 more limited than extreme projections: research”

Reason.com “The Sky is Falling Less?”

Democratherald.com “Good news on ‘warming’”

DiePresse.com “Klima: Erwärmung wird nicht ganz so hoch wie befürchtet”

Discovery News “Hot air ahead of climate meeting”

Theenergycollective “Message to Durban: It’s The Economy”

eScienceNews “Climate sensitivity to CO2 more limited than extreme projections”

FellowGeek “Global Temperatures Could Be More Resistant Than Thought”

SmartPlanet “CO2 not warming planet as much as thought”

SonnenSeite “Fällt der Klimawandel schwächer aus?”

The Global Warming Policy Foundation “Global Warming Forecasts ‘Exaggerated’”

National Review “The Climate Cataclysm Is Not Nigh”

The Food and Farm Show Interview with Ray Bowman on America’s Web Radio

USA Today “Warming Raising Sea Level, Says New Climate Change Report”

The following articles misrepresent, in my opinion, my work:

The Portland Press Herald “News continues to expose false ‘global warming’ claims”

Morning Sentinel “Major media ignoring news critical of climate change claims”

June 2011: KEZI 9 News “Coastal Mountains Affect Oceans”

December 2009: Oregon Sea Grant video “Predicting the Climate”

September 2009: Johanneum Gymnasium Herborn “Wir erkennen zu wenig die Ökologische Komplexität …”

September 2009: Oregon Public Broadcasting What Climate Change May Mean To Coastal Farms

May 2009: Terra Climate by the Numbers

November 2008: Science Direct Did Icebergs Warm the World?

March 2008: Washington Post Carbon Output Must Near Zero To Avert Danger, New Studies Say

March 2008: Interview with Radio Show “Ecoshock”

August 2006: FACTS Wir gehen baden
December 2005: BBC Ancient clues to ocean currents
November 2005: National Geographic “Mini Ice Age” May Be Coming Soon, Sea Study Warns
July 2005: Earthwatch Radio Plankton in Peril
April 2005: NASA Earth Observatory Currents Could Disrupt Ocean Food Chain

Other Media Links:
Thermohaline Circulation Slowing (Nature) ?

Thermohaline Circulation Slowing (Physics Today) ?

Bubbles in Ice Cores

last changed 5/3/12 11:03 AM