age model based on volcanic horizons and counting of annual layers (seasonal variations of stable isotopes and SO4)

AO: added isotope interpretation, doi and chronology information. TP added elevation

Column 'IC94THDP-chron-NA1', with variable name 'yearEnsemble', was added to the dataset

year (MATa83a2620a1): interpretation3_scope: '' has been replaced by 'climate'

d18O (IC94THDP01A): paleoData_isPrimary: '' has been replaced by 'FALSE'
d18O (IC94THDP01A): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
year (MATa83a2620a1): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (MATa83a2620a1): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'

d18O (IC94THDP01A): interpretation1_seasonality: 'annual' has been replaced by 'Annual'
d18O (IC94THDP01A): interpretation1_variable: 'T' has been replaced by 'temperature'
d18O (IC94THDP01A): interpretation2_seasonality: 'annual' has been replaced by 'Annual'
d18O (IC94THDP01A): interpretation2_variable: 'P_isotope' has been replaced by 'precipitationIsotope'

d18O (IC94THDP01A): interpretation1_seasonality: 'annual' has been replaced by 'Annual'
d18O (IC94THDP01A): interpretation1_variable: 'T' has been replaced by 'temperature'
d18O (IC94THDP01A): interpretation2_seasonality: 'annual' has been replaced by 'Annual'
d18O (IC94THDP01A): interpretation2_variable: 'P_isotope' has been replaced by 'precipitationIsotope'

d18O (IC94THDP01A): paleoData_longName: '' has been replaced by 'AD'
year (MATa83a2620a1): paleoData_units: 'AD' has been replaced by 'yr AD'
year (MATa83a2620a1): paleoData_longName: '' has been replaced by 'AD'

Thompson, L. G., Peel, D. A., Mosley-thompson, E., Mulvaney, R., Dal, J., Lin, P. N., Davis, M. E. and Raymond, C. F.: Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change, Annals of Glaciology, 20, 420–426, doi:10.3189/1994aog20-1-420-426, 1994.

DVD: data from https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/a87del18_1yr.txt  ; corrected coordinates