we employed the model developed by Bowen and Wilkinson (2002) and Bowen and Revenaugh (2003) to estimate the isotope composition of monthly precipitation atTakahula Lake.

We calculated a regional meteoric water line (RMWL) from
 precipitation dD and d18O data from Global Network of Isotopes in
 Precipitation (GNIP) (IAEA/WMO, 2004) sites in Bethel (60 4604800
 N, 161 4800000 W), Barrow (71 1800000 N, 156 4604800 W), Mayo
 (63 2201200 N, 135 3101200 W), and Whitehorse (60 4301200 N,
 135 401200 W)'

year (MAT178924c724): interpretation4_scope: '' has been replaced by 'climate'
depth (MATa866d9704a): interpretation4_scope: '' has been replaced by 'climate'

d18O (LS10CLTA): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (LS10CLTA): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MAT178924c724): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MAT178924c724): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
depth (MATa866d9704a): paleoData_isPrimary: '' has been replaced by 'FALSE'
depth (MATa866d9704a): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'

d18O (LS10CLTA): interpretation1_seasonality: 'winter' has been replaced by 'Winter'
d18O (LS10CLTA): interpretation1_variable: 'P' has been replaced by 'precipitation'
d18O (LS10CLTA): interpretation2_seasonality: 'DJF' has been replaced by 'Dec-Feb'
d18O (LS10CLTA): interpretation2_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS10CLTA): interpretation3_variable: 'P_E' has been replaced by 'effectivePrecipitation'

d18O (LS10CLTA): interpretation1_seasonality: 'winter' has been replaced by 'Winter'
d18O (LS10CLTA): interpretation1_variable: 'P' has been replaced by 'precipitation'
d18O (LS10CLTA): interpretation2_seasonality: 'DJF' has been replaced by 'Dec-Feb'
d18O (LS10CLTA): interpretation2_variable: 'P_E' has been replaced by 'effectivePrecipitation'
d18O (LS10CLTA): interpretation3_variable: 'P_E' has been replaced by 'effectivePrecipitation'

d18O (LS10CLTA): paleoData_longName: '' has been replaced by 'AD'
year (MAT178924c724): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MAT178924c724): paleoData_longName: '' has been replaced by 'AD'
depth (MATa866d9704a): paleoData_longName: '' has been replaced by 'AD'