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Volcanic Impact on the Atlantic Ocean Over the Last Millennium : Volume 7, Issue 4 (21/12/2011)

By Mignot, J.

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Book Id: WPLBN0004006262
Format Type: PDF Article :
File Size: Pages 17
Reproduction Date: 2015

Title: Volcanic Impact on the Atlantic Ocean Over the Last Millennium : Volume 7, Issue 4 (21/12/2011)  
Author: Mignot, J.
Volume: Vol. 7, Issue 4
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Frankignoul, C., Khodri, M., Servonnat, J., & Mignot, J. (2011). Volcanic Impact on the Atlantic Ocean Over the Last Millennium : Volume 7, Issue 4 (21/12/2011). Retrieved from

Description: LOCEAN-IPSL UMR 7159 CNRS-IRD MNHN-UPMC, Case 100, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France. The oceanic response to volcanic eruptions over the last 1000 years is investigated with a focus on the North Atlantic Ocean, using a fully coupled AOGCM forced by a realistic time series of volcanic eruptions, total solar irradiance (TSI) and atmospheric greenhouse gases concentration. The model simulates little response to TSI variations but a strong and long-lasting thermal and dynamical oceanic adjustment to volcanic forcing, which is shown to be a function of the time period of the volcanic eruptions. The thermal response consists of a fast tropical cooling due to the radiative forcing by the volcanic eruptions, followed by a penetration of this cooling in the subtropical ocean interior one to five years after the eruption, and propagation of the anomalies toward the high latitudes. The oceanic circulation first adjusts rapidly to low latitude anomalous wind stress induced by the strong cooling. The Atlantic Meridional Overturning Circulation (AMOC) shows a significant intensification 5 to 10 years after the eruptions of the period post-1400 A.D., in response to anomalous atmospheric momentum forcing, and a slight weakening in the following decade. In response to the stronger eruptions occurring between 1100 and 1300, the AMOC shows no intensification and a stronger reduction after 10 years. This study thus stresses the diversity of AMOC response to volcanic eruptions in climate models and discusses possible explanations.

Volcanic impact on the Atlantic Ocean over the last millennium

Ammann, C., Meehl, G., Washington, W., and Zender, C.: A monthly and latitudinally varying volcanic forcing dataset in simulations of 20th century climate, Geophys. Res. Lett, 30, 1657, doi:10.1029/2003GL016875, 2003.; Ammann, C., Joos, F., Schimel, D., Otto-Bliesner, B., and Tomas, R.: Solar influence on climate during the past millennium: Results from transient simulations with the NCAR climate system model, Proc. Nat. Acad. Sci. USA, 104, 3713–3718, doi:10.1073/pnas.0605064103, 2007.; Church, J., White, N. J., and Arblaster, J. M.: Significant decadal-scale impact of volcanic eruption and sea level and ocean heat content, Nature, 438, 74–77, doi:10.1038/nature04237, 2005.; Crowley, T.: Causes of climate change over the past 1000 years, Science, 289, 270–277, doi:10.1126/science.289.5477.270, 2000.; Fichefet, T. and Maqueda, M. A. M.: Sensitivity of a global sea ice model to the treatment of ice thermodynamics and dynamics, J. Geophys. Res., 102, 12609–12646, doi:10.1029/97JC00480, 1997.; Foukal, P., North, G., and Wigley, T.: A stellar view on solar variations and climate, Science, 306, 68–69, doi:10.1126/science.1101694, 2004.; Gao, C., Robock, A., and Ammann, C.: Volcanic forcing of climate over the last 1500 years: An improved ice-core based index for climate models, J. Geophys. Res., 113, D2311, doi:10.1029/2008JD010239, 2008.; Gastineau, G. and Frankignoul, C.: Cold-season atmospheric response to the natural variability of the Atlantic meridional overturning circulation, Clim. Dyn., in press, 2011.; Gleckler, P., Wigley, T. M. L., Santer, B. D., Gregory, J. M., AchutaRaoand, K., and Taylor, K. E.: Krakatoa's signature persists in the ocean, Nature, 429, 675, doi:10.1038/439675a, 2006.; Goosse, H. and Renssen, H.: Regional response of the climate system to solar forcing: the role of the ocean, Space Sci Rev., 125, 227–235, doi:10.1007/s1124-006-9059-0, 2006.; Goosse, H., Crowley, T., Zorita, E., Ammann, C., Renssen, H., and Driesschaert, E.: Modelling the climate of the last millennium: What causes the differences between simulations?, Geophys. Res. Lett., 32, L06710, doi:10.1029/2005GL022368, 2005.; Gray, L., Beer, J., Geller, M., Haigh, J. D., Lockwood, M., Matthes, K., Cubasch, U., Fleitmann, D., Harrison, G., Hood, L., Luterbacher, J., Meehl, G. A., Shindell, D., van Geel, B., and White, W.: Solar influenced on climate, Rev. Geophys., 48, RG4001, doi:10.1029/2009RG000282, 2010.; Gray, S., Graumlich, L. J., Betancourt, J. L., and Pederson, G. T.: A tree-ring based reconstruction of the A}tlantic {M}ultidecadal {O}scillation since 1567 {A.D., J. Geophys. Res., 31, L12205, doi:10.1029/2004GL019932, 2004.; Grinsted, A., Moore, J. C., and Jevrejeva, S.: Application of the cross wavelet transform and wavelet coherence to geophysical time series, Nonlin. Processes Geophys., 11, 561–566, doi:10.5194/npg-11-561-2004, 2004.; Hofer, D., Raible, C. C., and Stocker, T. F.: Variations of the Atlantic meridional overturning circulation in control and transient simulations of the last millennium, Clim. Past, 7, 133–150, doi:10.5194/cp-7-133-2011, 2011.; Hourdin, F., Musat, I., Bony, S., Braconnot, P., Codron, F., Dufresne, J., Fairhead, L., Filiberti, M. A., Friedlingstein, P., Grandpeix, J. Y., Krinner, G., Levan, P., Li, Z., and Lott, F.: The LMDZ4 general circulation model: climate performance and sensitivity to parametrized physics with emphasis on tropical convection, Clim. Dyn., 27, 787–813, doi:10.1007/s00382-006-0158-0, 2006.; Jansen, E., Overpeck, J., Briffa, K. R., Duplessy, J.-C., Joos, F., Masson-Delmotte, V., Olago, B., Otto-Bliesner, B., Peliter, W. R., Rahmstorf, S., Ramesh, R., Raynaud, D., Rind, D., Solomina, O., Villalba, R., and Zhang, D.: Paleoclimate, in: Climate change 2007: the physical science basis. Contribution of working group I to the fourth assessment report of


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