d18O (LS12STLI): interpretation1_seasonality: 'winter' has been replaced by 'Winter'
d18O (LS12STLI): interpretation1_variable: 'P' has been replaced by 'precipitation'
d18O (LS12STLI): interpretation2_seasonality: 'DJF' has been replaced by 'Dec-Feb'
d18O (LS12STLI): interpretation2_variable: 'P_isotope' has been replaced by 'precipitationIsotope'

d18O (LS12STLI): paleoData_longName: '' has been replaced by 'AD'
year (MAT7c63e174b9): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT7c63e174b9): paleoData_longName: '' has been replaced by 'AD'

d18O (LS12STLI): interpretation3_scope: '' has been replaced by 'isotope'
d18O (LS12STLI): interpretation4_scope: '' has been replaced by 'isotope'

Steinman, B. A. , Abbott, M. B. , Mann, M. E. , Stansell, N. D. , Finney, B. P.

Steinman, B. A., Abbott, M. B., Mann, M. E., Stansell, N. D. and Finney, B. P.: 1,500 year quantitative reconstruction of winter precipitation in the Pacific Northwest, Proceedings of the National Academy of Sciences, 109(29), 11619–11623, doi:10.1073/pnas.1201083109, 2012.

1,500 year quantitative reconstruction of winter precipitation in the Pacific Northwest

Sediment samples
were disaggregated for approximately 24 h in 7% H2O2 solution and sieved
at 63 μm to isolate authigenic (i.e., precipitated in-lake) carbonate material
and to limit contamination by biogenic carbonate shell material. The captured
<63 μm fraction of the sediment was settled from rinse water and then
centrifuged, and the remaining liquid was decanted. The resulting fine grained
 carbonate sediment was bleached (using a 50% bleach, 50% water
 solution), rinsed three times using deionized water, freeze-dried, and homogenized
using an agate mortar and pestle.

We interpret the Renner-Lime Lake ??18O record as a proxy for winter precipitation amounts. Note that the Renner- Lake ??18O dataset was produced by mean centering the two records and subtracting the latter from the former (i.e., the same method used to produce the Castor-Lime Lake ??18O dataset).