Publication Abstracts

Jansen et al. 2007

Jansen, E., J. Overpeck, K.R. Briffa, J.-C. Duplessy, F. Joos, V. Masson-Delmotte, D. Olago, B. Otto-Bliesner, W.R. Peltier, S. Rahmstorf, R. Ramesh, D. Raynaud, D. Rind, O. Solomina, R. Villalba, and D. Zhang, 2007: Palaeoclimate. In Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor, and H.L. Miller, Eds. Cambridge University Press, pp. 433-497.

This chapter assesses palaeoclimatic data and knowledge of how the climate system changes over interannual to millennial time scales, and how well these variations can be simulated with climate models. Additional palaeoclimatic perspectives are included in other chapters.

Palaeoclimate science has made significant advances since the 1970s, when a primary focus was on the origin of the ice ages, the possibility of an imminent future ice age, and the first explorations of the so-called Little Ice Age and Medieval Warm Period. Even in the first IPCC assessment, many climatic variations prior to the instrumental record were not that well known or understood. Fifteen years later, understanding is much improved, more quantitative and better integrated with respect to observations and modelling.

After a brief overview of palaeoclimatic methods, including their strengths and weaknesses, this chapter examines the palaeoclimatic record in chronological order, from oldest to youngest. This approach was selected because the climate system varies and changes over all time scales, and it is instructive to understand the contributions that lower-frequency patterns of climate change might make in infl uencing higher-frequency patterns of variability and change. In addition, an examination of how the climate system has responded to large changes in climate forcing in the past is useful in assessing how the same climate system might respond to the large anticipated forcing changes in the future.

Cutting across this chronologically based presentation are assessments of climate forcing and response, and of the ability of state-of-the-art climate models to simulate the responses. Perspectives from palaeoclimatic observations, theory and modelling are integrated wherever possible to reduce uncertainty in the assessment. Several sections also assess the latest developments in the rapidly advancing area of abrupt climate change, that is, forced or unforced climatic change that involves crossing a threshold to a new climate regime (e.g., new mean state or character of variability), often where the transition time to the new regime is short relative to the duration of the regime.

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BibTeX Citation

@inbook{ja05100g,
  author={Jansen, E. and Overpeck, J. and Briffa, K. R. and Duplessy, J.-C. and Joos, F. and Masson-Delmotte, V. and Olago, D. and Otto-Bliesner, B. and Peltier, W. R. and Rahmstorf, S. and Ramesh, R. and Raynaud, D. and Rind, D. and Solomina, O. and Villalba, R. and Zhang, D.},
  editor={Solomon, S. and Qin, D. and Manning, M. and Chen, Z. and Marquis, M. and Averyt, K. B. and Tignor, M. and Miller, H. L.},
  title={Palaeoclimate},
  booktitle={Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change},
  year={2007},
  pages={433--497},
  publisher={Cambridge University Press},
  address={Cambridge, United Kingdom and New York, N.Y.},
}

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RIS Citation

TY  - CHAP
ID  - ja05100g
AU  - Jansen, E.
AU  - Overpeck, J.
AU  - Briffa, K. R.
AU  - Duplessy, J.-C.
AU  - Joos, F.
AU  - Masson-Delmotte, V.
AU  - Olago, D.
AU  - Otto-Bliesner, B.
AU  - Peltier, W. R.
AU  - Rahmstorf, S.
AU  - Ramesh, R.
AU  - Raynaud, D.
AU  - Rind, D.
AU  - Solomina, O.
AU  - Villalba, R.
AU  - Zhang, D.
ED  - Solomon, S.
ED  - Qin, D.
ED  - Manning, M.
ED  - Chen, Z.
ED  - Marquis, M.
ED  - Averyt, K. B.
ED  - Tignor, M.
ED  - Miller, H. L.
PY  - 2007
TI  - Palaeoclimate
BT  - Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change
SP  - 433
EP  - 497
PB  - Cambridge University Press
CY  - Cambridge, United Kingdom and New York, N.Y.
ER  -

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