Publication Abstracts

Dolan et al. 2015

Dolan, A.M., S.J. Hunter, D.J. Hill, A.M. Haywood, S.J. Koenig, B.L. Otto-Bliesner, A. Abe-Ouchi, F. Bragg, W.-L. Chan, M.A. Chandler, C. Contoux, A. Jost, Y. Kamae, G. Lohmann, D.J. Lunt, G. Ramstein, N.A. Rosenbloom, L. Sohl, C. Stepanek, H. Ueda, Q. Yan, and Z. Zhang, 2015: Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the warm Pliocene. Clim. Past, 11, 403-424, doi:10.5194/cp-11-403-2015.

During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide concentrations were higher than pre-industrial levels. Sea level was also higher than today, implying a significant reduction in the extent of the ice sheets. Thus, the mPWP provides a natural laboratory in which to investigate the long-term response of the Earth's ice sheets and sea level in a warmer-than-present-day world.

At present, our understanding of the Greenland ice sheet during the mPWP is generally based upon predictions using single climate and ice sheet models. Therefore, it is essential that the model dependency of these results is assessed. The Pliocene Model Intercomparison Project (PlioMIP) has brought together nine international modelling groups to simulate the warm climate of the Pliocene. Here we use the climatological fields derived from the results of the 15 PlioMIP climate models to force an offline ice sheet model.

We show that mPWP ice sheet reconstructions are highly dependent upon the forcing climatology used, with Greenland reconstructions ranging from an ice-free state to a near-modern ice sheet. An analysis of the surface albedo variability between the climate models over Greenland offers insights into the drivers of inter-model differences. As we demonstrate that the climate model dependency of our results is high, we highlight the necessity of data-based constraints of ice extent in developing our understanding of the mPWP Greenland ice sheet.

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BibTeX Citation

@article{do06100q,
  author={Dolan, A. M. and Hunter, S. J. and Hill, D. J. and Haywood, A. M. and Koenig, S. J. and Otto-Bliesner, B. L. and Abe-Ouchi, A. and Bragg, F. and Chan, W.-L. and Chandler, M. A. and Contoux, C. and Jost, A. and Kamae, Y. and Lohmann, G. and Lunt, D. J. and Ramstein, G. and Rosenbloom, N. A. and Sohl, L. and Stepanek, C. and Ueda, H. and Yan, Q. and Zhang, Z.},
  title={Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the warm Pliocene},
  year={2015},
  journal={Clim. Past},
  volume={11},
  pages={403--424},
  doi={10.5194/cp-11-403-2015},
}

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RIS Citation

TY  - JOUR
ID  - do06100q
AU  - Dolan, A. M.
AU  - Hunter, S. J.
AU  - Hill, D. J.
AU  - Haywood, A. M.
AU  - Koenig, S. J.
AU  - Otto-Bliesner, B. L.
AU  - Abe-Ouchi, A.
AU  - Bragg, F.
AU  - Chan, W.-L.
AU  - Chandler, M. A.
AU  - Contoux, C.
AU  - Jost, A.
AU  - Kamae, Y.
AU  - Lohmann, G.
AU  - Lunt, D. J.
AU  - Ramstein, G.
AU  - Rosenbloom, N. A.
AU  - Sohl, L.
AU  - Stepanek, C.
AU  - Ueda, H.
AU  - Yan, Q.
AU  - Zhang, Z.
PY  - 2015
TI  - Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the warm Pliocene
JA  - Clim. Past
VL  - 11
SP  - 403
EP  - 424
DO  - 10.5194/cp-11-403-2015
ER  -

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