CP Climate of the Past CP Clim. Past 1814-9332 Copernicus Publications Göttingen, Germany 10.5194/cp-8-1765-2012 COnstructing Proxy Records from Age models (COPRA) Breitenbach S. F. M. 1 Rehfeld K. 2 3 Goswami B. 2 4 Baldini J. U. L. 5 Ridley H. E. 5 Kennett D. J. 6 Prufer K. M. 7 Aquino V. V. 7 Asmerom Y. 8 Polyak V. J. 8 Cheng H. 9 10 Kurths J. 2 Marwan N. 2 Geological Institute, Department of Earth Sciences, ETH Zurich, 8092 Zurich, Switzerland Potsdam Institute for Climate Impact Research (PIK), 14412 Potsdam, Germany Department of Physics, Humboldt Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany Department of Physics, University of Potsdam, Karl-Liebknecht Str. 24–25, 14476 Potsdam, Germany Department of Earth Sciences, Durham University, Durham DH1 3LE, UK Department of Anthropology, The Pennsylvania State University, University Park, PA 16803, USA Department of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, USA Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China Department of Earth Sciences, University of Minnesota, Minneapolis, MN 55455, USA 31 10 2012 8 5 1765 1779 Copyright: © 2012 S. F. M. Breitenbach et al. 2012 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://cp.copernicus.org/articles/8/1765/2012/cp-8-1765-2012.html The full text article is available as a PDF file from https://cp.copernicus.org/articles/8/1765/2012/cp-8-1765-2012.pdf

Reliable age models are fundamental for any palaeoclimate reconstruction. Available interpolation procedures between age control points are often inadequately reported, and very few translate age uncertainties to proxy uncertainties. Most available modeling algorithms do not allow incorporation of layer counted intervals to improve the confidence limits of the age model in question. <br><br> We present a framework that allows detection and interactive handling of age reversals and hiatuses, depth-age modeling, and proxy-record reconstruction. Monte Carlo simulation and a translation procedure are used to assign a precise time scale to climate proxies and to translate dating uncertainties to uncertainties in the proxy values. The presented framework allows integration of incremental relative dating information to improve the final age model. The free software package COPRA1.0 facilitates easy interactive usage.

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