COnstructing Proxy Records from Age models (COPRA)

Reliable age models are fundamental for any palaeoclimate reconstruction. Available interpolation proce- dures between age control points are often inadequately re- ported, and very few translate age uncertainties to proxy un- certainties. Most available modeling algorithms do not allow incorporation of layer counted intervals to improve the con- fidence limits of the age model in question. We present a framework that allows detection and interac- tive handling of age reversals and hiatuses, depth-age mod- eling, and proxy-record reconstruction. Monte Carlo simula- tion and a translation procedure are used to assign a precise time scale to climate proxies and to translate dating uncer- tainties to uncertainties in the proxy values. The presented framework allows integration of incremental relative dating information to improve the final age model. The free soft- ware package COPRA1.0 facilitates easy interactive usage.

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