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fs01.pdfPDF document1732KMaps showing the intensity of locally-absent rings during those eighteen years of the last millennium when these features were present in the highest number of ring-width records across the Northern Hemisphere. The locations of records that spanned each year but did not have any absent rings are indicated by grey dots.
fs02.pdfPDF document415KMaps showing the distribution and intensity of locally-rings across the Northern Hemisphere during the growing seasons that immediately followed the four largest stratospheric sulfate aerosol injection events of the last millennium [Gao et al., 2008]. The locations of records that spanned each year but did not have any absent rings are indicated by grey dots.
fs03.pdfPDF document131KMap showing the distribution and intensity of locally-absent rings across the Northern Hemisphere in A.D. 1644, which is estimated to be the coldest year of the last 1,500 years [Mann et al., 2009]. The locations of records that spanned this year but did not have any absent rings are indicated by grey dots.
fs04.pdfPDF document161KScatter plot illustrating the frequency of absent rings in tree-ring width records as a function of elevation.
fs05.pdfPDF document123KBar plots illustrating the occurrences of absent rings, by year, in those tree-ring width records that had the highest frequency of those features for each of the major five genera. The gray bars represent the number of total tree-ring specimens that spanned each year, and the black bars represent the number of specimens with absent rings.
ts01.xlsapplication/unknown443KExcel file containing metadata for the 2,359 tree-ring width data obtained from the International Tree-Ring Data Bank (ITRDB) used in this study.
ts02.xlsapplication/unknown11KExcel file describing the frequency of absent rings within Northern Hemisphere ring-width records reported in the literature.
readme.rtfapplication/unknown5KSupporting information

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