Nature 392, 779–787 (1998).
It has been drawn to our attention (S. McIntyre and R. McKitrick) that the listing of the ‘proxy’ data set in the Supplementary Information published with this Article contained several errors. In Table 1 we provide a list of the records that were either mistakenly included in the Supplementary Information, or mistakenly left out. A small number of other corrections of the original listing include (see Table 1) corrections of the citations originally provided, or corrections of the start years for certain series.
The full, corrected listing of the data is supplied as Supplementary Information to this corrigendum. Also provided as Supplementary Information are a documented archive of the complete data (instrumental and ‘proxy’ climate series) used in our original study, and an expanded description of the methodological details of our original study.
None of these errors affect our previously published results1.
Mann, M. E., Bradley, R. S. & Hughes, M. K. Global-scale temperature patterns and climate forcing over the past six centuries. Nature 392, 779–787 (1998)
Bradley, R. S. & Jones, P. D. “Little ice age” summer temperature variations: their nature and relevance to recent global warming trends. The Holocene 3, 367–376 (1993)
Briffa, K. R. et al. Fennoscandian summers from ad500: temperature changes on short and long timescales. Clim. Dyn. 7, 111–119 (1992)
Stahle, D. W. et al. Experimental dendroclimatic reconstruction of the Southern Oscillation. Bull. Am. Meteorol. Soc. 79, 2137–2152 (1998)
Mann, M. E. et al. Global temperature patterns in past centuries: An interactive presentation. Earth Inter. 4-4, 1–29 (2000)
The online version of the original article can be found at 10.1038/33859
Instrumental directory This directory contains: 1. Instrumental surface temperature eigenvectors (EOFs and PC series), their corresponding eigenvalues, and the gridbox centers for the 1082 instrumental surface temperature gridpoint series used; 2. Gridpoint temperature standardization factors used to normalize the 1082 instrumental gridpoint series; 3. The original Climatic Research Unit (CRU) gridpoint surface temperature temperature database from 1854-1993 of Jones and Briffa  used by MBH98 (this version of the dataset has been replaced by a different surface temperature dataset at CRU and is no longer available). A simple fortran program that reads in the data is provided. Proxy directory This directory contains:1. The 11 distinct matrices of proxy data corresponding to the 11 distinct intervals of the stepwise reconstruction described by MBH98; 2. The 11 corresponding files listing the corresponding set of proxy indicators, and the weights applied to those proxy indicators in the analysis; 3. Data matrix containing all 415 individual proxy (and instrumental/historical) series contributing to the proxy indicators networks used by MBH98; 4. Updated list of all individual series used by MBH98, with start/end dates of series, and references. Figure Data This directory contains the ime series data shown in MBH98, corresponding to Figures 5a; 5b; 7. Methods A supplement to the brief description of methods provided in MBH98, providing some additional minor methodological details. (HTM 27 kb)
Additional minor details of the MBH98 methodology. (DOC 19 kb)
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Mann, M., Bradley, R. & Hughes, M. Correction: Corrigendum: Global-scale temperature patterns and climate forcing over the past six centuries. Nature 430, 105 (2004). https://doi.org/10.1038/nature02478
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