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TitleSupplementary data, code, and information for ‘Robustness of Proxy-Based Climate Field Reconstruction Methods’ (Mann et al. 2007)
AbstractWe present results from continued investigations into the fidelity of covariance-based climate field reconstruction (CFR) approaches used in proxy-based climate reconstruction. Our experiments employ synthetic ‘‘pseudoproxy’’ data derived from simulations of forced climate changes over the past millennium. Using networks of these pseudoproxy data, we investigate the sensitivity of CFR performance to signal-to-noise ratios, the noise spectrum, the spatial sampling of pseudoproxy locations, the statistical representation of predictors used, and the diagnostic used to quantify reconstruction skill. Our results reinforce previous conclusions that CFR methods, correctly implemented and applied to suitable networks of proxy data, should yield reliable reconstructions of past climate histories within estimated uncertainties. Our results also demonstrate the deleterious impact of a linear detrending procedure performed recently in certain CFR studies and illustrate flaws in some previously proposed metrics of reconstruction skill.
MetadataClick here for full metadata
Data DOIdoi:10.26208/v9j7-1p65

Mann, M. E.
Penn State Department of Meteorology
Rutherford, S.
Roger Williams University
Wahl, E.
Alfred University
Ammann, C.
National Center for Atmospheric Research

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Mann, M.E., Rutherford, S., Wahl, E., Ammann, C., Robustness of Proxy-Based Climate Field Reconstruction Methods, J. Geophys. Res., 112, D12109, doi: 10.1029/2006JD008272, 2007.