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Publications

Original Papers

  1. Chikamoto, M. O., A. Timmermann, M. Yoshimori, F. Lehner, A. Laurian, A. Abe-Ouchi, A. Mouchet, F. Joos, C. C. Raible, K. M. Cobb (2016), Intensification of tropical Pacific biological productivity due to volcanic eruptions, Geophysical Research Letters, 43, 3, 1184-1192, doi:10.1002/2015GL067359. [Link]
  2. Chikamoto, M. O., A. Timmermann, Y. Chikamoto, N. Harada, and H. Tokinaga (2015), Mechanisms and predictability of multiyear ecosystem variability in the North Pacific, Global Biogeochemical Cycles, 29, 2001-2019, doi:10.1002/2015GB005096. [Open Access Link]
  3. Weber, M. E., P. U. Clark, G. Kuhn, A. Timmermann, D. Sprenk, R. Gladstone, X. Zhang, G. Lohmann, L. Menviel, M. O. Chikamoto, T. Friedrich, and C. Ohlwein (2014), Millennial-scale variability in Antarctic ice-sheet discharge during the last deglaciation, Nature, 510, 134-138. [Link]
  4. Timmermann, A., T. Friedrich, O. E. Timm, M. O. Chikamoto, A. Abe-Ouchi, and A. Ganopolski, (2014), Modeling Obliquity and CO2 Effects on Southern Hemisphere Climate during the Past 408 ka, Journal of Climate, Volume 27, Issue 5, 1863-1875. [Link PDF]
  5. Sueyoshi, T., R. Ohgaito, A. Yamamoto, M. O. Chikamoto, T. Hajima, H. Okajima, M. Yoshimori, M. Abe, R. O'ishi, F. Saito, S. Watanabe, M. Kawamiya, and A. Abe-Ouchi, (2013), Setup of the PMIP3 paleoclimate experiments conducted using an Earth System Model, MIROC-ESM, Geoscientific Model Development, 6, 819-836, doi:10.5194/gmd-6-819-2013 [Link]
  6. Chikamoto, M. O., A. Abe-Ouchi, A. Oka, S. L. Smith, (2012), Temperature-induced marine export production during glacial period, Geophysical Research Letters, 39, L21601,doi:10.1029/2012GL053828 [Full text (PDF)]
  7. Chikamoto, M. O., A. Abe-Ouchi, A. Oka, R. Ohgaito, A. Timmermann, (2012), Quantifying the ocean's role in glacial CO2 reductions, Climate of the Past, 8, 545-563 [Full text (PDF)]
  8. Chikamoto, M. O., L. Menviel, A. Abe-Ouchi, R. Ohgaito, A. Timmermann, Y. Okazaki, N. Harada, A. Oka, and A. Mouchet (2012), Variability in North Pacific Intermediate and deep water ventilation during Heinrich events in two coupled climate models, Deep Sea Research II, 61-64, 114-126 [Full text (PDF)]
  9. Harada, N., M. Sato, O. Seki, A. Timmermann, H. Moossen, J. Bendle, Y. Nakamura, K. Kimoto, Y. Okazaki, K. Nagashima, S. A. Garbarenko, A. Ijiri, T. Nakatsuka, L. Menviel, M. O. Chikamoto, A. Abe-Ouchi, and S. Schouten (2012), Sea surface temperature changes in the Okhotsk Sea and adjacent North Pacific during the last glacial maximum and deglaciation, Deep Sea Research II, 61-64, 93-105 [Link]
  10. Menviel, L., A. Timmermann, A., O. Timm, A. Mouchet, A. Abe-Ouchi, M. O. Chikamoto, N. Harada, R. Ohgaito, and Y. Okazaki (2012), Removing the north Pacific halocline: effects on global climate, ocean circulation and the carbon cycle, Deep Sea Research II, 61-64, 106-113 [Link]
  11. Hu. A., G. A. Meehl, W. Han, A. Abe-Ouchi, C. Morrill, Y. Okazaki, and M. O. Chikamoto (2012), The Pacific-Atlantic seesaw and the Bering Strait, Geophysical Research Letters, Volume: 39 L03702 doi:10.1029/2011GL050567 [Link]
  12. Friedrich, T., A. Timmermann, A. Abe-Ouchi, N. R. Bates, M. O. Chikamoto, M. J. Church, J. E. Dore, D. K. Gledhill, M. Gonzalez-Davila, M. Heinemann, T. Ilyina, T., H. Jungclaus, E. McLeod, A. Mouchet, and J. M. Santana-Casiano (2012), Detecting regional anthropogenic trends in ocean acidification against natural variability, Nature Climate Change, doi:10.1038/nclimate1372 [Link]
  13. Oka, A., A. Abe-Ouchi, M. O. Chikamoto, and T. Ide (2011), Mechanisms controlling export production at the LGM: effects of changes in oceanic physical field and atmospheric dust deposition, Global Biogeochemical Cycles, Volume: 25 GB2009 doi:10.1029/2009GB003628 [Link]
  14. Matsumoto, K., K. S. Tokos, M. O. Chikamoto, and A. Ridgwell (2010), Characterizing postindurstrial changes in the ocean carbon cycle in an Earth System model, Tellus, Volume: 62 Issue: 4 Pages:296-313 [Link]
  15. Okazaki, Y., A. Timmermann, L. Menviel, N. Harada, A. Abe-Ouchi, M. O. Chikamoto, A. Mouchet, and H. Asahi (2010), Deep water formation in the North Pacific during the last glacial termination, Science, Volume: 329 Issue: 5988 Pages: 200-204 [Link]
  16. Chikamoto, M. O., K. Matsumoto, and Y. Yamanaka (2009), Influence of export rain ratio changes on atmospheric CO2 and sedimentary calcite preservation, Journal of Oceanography Volume: 65 Issue: 2 Pages: 209-221. [Full text (PDF)]
  17. Chikamoto, M. O., K. Matsumoto, and A. Ridgwell (2008), Response of deep-sea CaCO3 sedimentation to Atlantic meridional overturning circulation shutdown, Journal of Geophysical Research Biogeosciences, Volume: 113 G03017 doi:10.1029/2007JG000669 [Full text (PDF)]
  18. Chikamoto, M. O. and Y. Yamanaka (2005), Sedimentary responses to an abrupt change of biogenic silica flux by a sediment model for long timescale simulations, Journal of Oceanography, Volume: 61 Issue: 4 Pages: 733-746 [Full text (PDF)]

Oral Presentations Scientific Meeting (Invited)

  1. Chikamoto, M. O., Timmermann, A., Harada, N., Okazaki, Y.: Deglacial millennial-scale calcium carbonate spikes in the North Pacific Ocean, AGU 2015 Fall Meeting, San Francisco, California, USA, December 14-18, 2015 (Invited)
  2. Chikamoto, M. O., Abe-Ouchi, A. Oka, A., Ohgaito, R., Timmermann, A.: Marine carbon cycle sensitivities to glacial North Atlantic Deep Water formation by coupled climate model simulations, INQIA Congress, Bern, Switzerland, July 21-27, 2011

Oral Presentations

  1. Chikamoto, M. O., Timmermann, A., Harada, N., Okazaki, Y.: Understanding North Pacific deglacial CaCO3 peaks, ESSAS Annual Science Meeting, The Role of Ice in the Sea, Seattle, Washington, USA, June 15-17, 2015
  2. Abe-Ouchi, A., R. Ohgaito, K. Takahashi, M. O. Chikamoto, S. Sherriff-Tadano, A. Oka, J. C. Hargreaves, A. Timmermann, and M. Yoshimori, Glacial Atlantic Overturning in CMIP/PMIP models controlled by the Southern and Northern high latitude changes, AGU Fall Meeting, San Francisco, CA, USA, December 2014.
  3. Chikamoto, M. O., Timmermann, A., Chikamoto, Y., Tokinaga, H., Harada, N.: Decadal marine ecosystem response to Aleutian Low variability in CESM, 18th Annual CESM Workshop, Breckenridge, Colorado, USA, June 17-20, 2013
  4. Oka, A., Abe-Ouchi, A., Chikamoto, M. O., and Ide T.: Investigation on mechanisms controlling atmospheric carbon dioxide concentration and export production at the LGM by using an biogeochemical ocean model, 2012 Ocean Science Meeting, Salt Lake City, USA, February 20-24, 2012
  5. Timmermann, A., Okazaki, Y., Harada, N., Menviel, L., Chikamoto, M. O., and Abe-Ouchi, A.: The North Pacific’s role in Pleistocene Climate, AGU Fall Meeting, San Francisco, USA, December 5-9, 2011
  6. Abe-Ouchi, A., Saito, F., Kawamura, K., Ohgaito, R., Chiakmoto, M. O., Oka, A., Yoshimori, M., Yokoyama, Y.: Modelling the climate, ice sheet and thermohaline circulation during the ice age termination, AGU Fall Meeting, San Francisco, USA, December 13-18, 2009
  7. Chikamoto, M. O., A. Abe-Ouchi, A. Oka, and R. Ohgaito, Simulations of ocean carbon cycle based on the glacial climate fields of a full coupled atmosphere-ocean GCM, Japan Geoscience Union Meeting 2009, Chiba, Japan, May 2009.

Poster Presentations

  1. Chikamoto, M. O., Chikamoto, Y., Timmermann, A., Minobe, S. and Harada, N.: Marine Ecosystem Variability under the ocean dynamical constrain, International Symposium "Ocean Mixing Processes: Impact on Biogeochemistry, Climate and Ecosystem", Tokyo, Japan, March 16-17, 2017
  2. Chikamoto, M. O., Timmermann, A., Chikamoto, Y., Tokinaga, H., Harada, N.: Decadal variability and predictability of biogeochemical changes in the North Pacific, Ocean Science Meeting 2014, Honolulu, Hawaii, USA, February 23-28, 2014
  3. Sarnthein, M., A. Abe-Ouchi, S. Balmer, M. Chikamoto, P. M. Grootes, B. Schneider, K. Wallmann, Benthic 14C ventilation ages record DIC storage in modern and LGM Abyssal Ocean, the 12th International Conference on Paleoceanography, Utrecht, Netherland, August 2016
  4. Ohgaito, R., A. Abe-Ouchi, T. Takemura, T. Sueyoshi, S. Watanabe, R. O’ishi, T. Hajima, H. Okajima, F. Saito, M. O. Chikamoto, and M. Kawamiya, The modeling of mineral dust aerosol at the Last Glacial Miximum using MIROC-ESM and analyses on the feedbacks on the climate, XIX INQUA 2015, Nagoya, Japan, August 2015
  5. Abe-Ouchi, A., R. Ohgaito, K. Takahashi, S. Sherriff Tadano, A. Oka, J. Hargreaves, M. Yoshimori, A. Timmermann, and M. Chikamoto, Glacial Atlantic Overturning in CMIP/PMIP models and MIROC AOGCM, European Geosciences Union General Assembly 2015, Vienna, Austria, April 2015
  6. Ohgaito, R., A. Abe-Ouchi, T. Takemura, T. Sueyoshi, S. Watanabe, R. O’ishi, T. Hajima, H. Okajima, F. Saito, M. O. Chikamoto, and M. Kawamiya, LGM climate and dust representation in MIROC-ESM – preliminary results, 3rd Paleoclimate Modelling Intercomparison Project, Phase 3, Workshop, Namur, Belgium, May 2014
  7. Chikamoto, M. O., A. Timmermann, Y. Chikamoto, H. Tokinaga, and N. Harada, Decadal variability and predictability of biogeochemical changes in the North Pacific, Ocean Science Meeting 2014, Honolulu, HI, USA, February 23-28, 2014
  8. Oka, A., A. Abe-Ouchi, M. O. Chikamoto, and T. Ide, Mechanisms Controlling Export Production at the LGM: Effects of Changes in Oceanic Physical Fields and Atmospheric Dust Deposition, AOGS (Asia Oceania Geosciences Society)–AGU Joint Assembly, Singapore, August 2012
  9. Chikamoto, M. O., Smith, S. L., Abe-Ouchi, A., and A. Oka. Modeling the carbon cycle as affected by temperature sensitivities of autotrophic production vs. heterotrophic degradation in the ocean, SOLAS Open Science Conference, Seattle, WA, USA, May 7-10, 2012
  10. Oka, A., A. Abe-Ouchi, M. O. Chikamoto, and T. Ide, Investigation on mechanisms controlling export production at the LGM with an biogeochemical ocean model, European Geosciences Union General Assembly 2012, Vienna, Austria, April 2012
  11. Abe-Ouchi, A., R. Ohgaito, A. Oka, M. Chikamoto, J. C. Hargreaves, M. Yoshimori, and A. Timmermann, Why climate models often fail to reproduce the Atlantic Meridional Overturning Circulation at the Last Glacial Maximum, European Geosciences Union General Assembly 2012, Vienna, Austria, April 2012
  12. Sueyoshi, T. A. Abe-Ouchi, S. Watanabe, T. Hajima, R. Ohgaito, M. Chikamoto, and M. Kawamiya, Transient climate simulation of Last Millennium using integrated Earth System Model, XVIII INQUA Congress 2011, Bern, Switzerland, July 21-27, 2011
  13. Harada, N. M. Saito, O. Seki, A. Timmermann, H. Moossen, J. Bendle, Y. Nakamura, K. Kimoto, Y. Okazaki, K. Nagashima, S. A. Gorbarenko, A. Ijiri, T. Nakatsuka, L. Menviel, M. O. Chikamoto, A. Abe-Ouchi, and S. Schouten, Sea surface and subsurface temperature changes in the Okhotsk Sea and Adjacent North Pacific during the Last Glacial Maximum and deglaciation, AGU Fall Meeting, San Francisco, CA, USA, December 2010
  14. Chikamoto, M. O., Abe-Ouchi, A., Oka, A., and R. Ohgaito. Atmospheric CO2 response to strong and weak glacial North Atlantic Deep Water formations by coupled climate model simulations, Paleoclimate Modelling Intercomparison Project, Phase 3, Workshop, Kyoto, Japan, December 6-10, 2010
  15. Laurian, A. M. O. Chikamoto, A. Timmermann, A. Abe-Ouchi, and A. Mouchet, Marine biogeochemical response to the 1258 AD volcanic eruption, Paleoclimate Modelling Intercomparison Project, Phase 3, Workshop, Kyoto, Japan, December 6-10, 2010
  16. Okazaki, Y. A. Timmermann, L. Menviel, N. Harada, M. Chikamoto, A. Abe-Ouchi, A. Mouchet, and H. Asahi, Deepwater formation in the North Pacific during the last glacial termination, 10th International Conference on Paleoceanography, San Diego, CA, USA, August 2010
  17. Chikamoto, M. O., Abe-Ouchi A., Ohgaito, R., and A. Oka. Interaction between ocean circulation and sea-ice coverage controlling marine carbon cycle, 2010 PAGES Regional Workshop, Nagoya, Japan, June 5-6, 2010
  18. Chikamoto, M. O., Abe-Ouchi, A., Ohgaito, R., and A. Oka, Marine carbon cycle sensitivity to background glacial climate states, AGU Fall Meeting, San Francisco, CA, USA, December 13-18, 2009
  19. Abe-Ouchi, A., Saito, F., Kawamura, K., Ohgaito, R., Chiakmoto, M. O., Oka, A., Yoshimori, M., Yokoyama, Y.: Modelling the climate, ice sheet and thermohaline circulation during the ice age termination, AGU Fall Meeting, San Francisco, USA, December 13-18, 2009
  20. Chikamoto, M. O., Matsumoto, K. and A. Ridgwell, The Response of Calcite Lysocline to Thermohaline Circulation Changes, AGU Fall Meeting, San Francisco, CA, USA, December 2006
  21. Chikamoto, M. O. and Y. Yamanaka, Sedimentary responses to an abrupt change of biogenic silica flux using a long-term sediment diagenesis model, 8th International Conference on Paleoceanography, Biarritz, France, September 2004
  22. Ohata, M. and Y. Yamanaka, A study of marine sediment, 7th International Conference on Paleoceanography, Sapporo, Japan, September 2001