This record is the result of an inversion of water isotope data, borehole temperature data and ice flow modeling (Cuffey andClow 1997, updated by Alley et al., 2004 for the Younger dryas period). This is a primary, trustworthy record for Greenland.
NOAA lists Alley 2000 as the primary publication, but Cuffey and Clow 1997 is the primary publication, as Alley 2000 only deals with the younger dryas.
linear correlation of d18O with borehole temperature
NA; paleoData_isPrimary has been standardized
NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized
NA; paleoData_datum has been standardized
"coring in the central region of a large, broad ice cap with sufficiently rapid snow accumulation, as in central Greenland, avoids significant contributions from any of these. “Noise” from snow drifts or other spatial heterogeneity in accumulation affects yearto-year accumulation, but snowdrift anomalies cannot be sustained for multiple years. Hence, accurate reconstructions of accumulation rate are straightforward over tens of thousands of years in central Greenland". (Alley et al., 2000)
temperature (GH34755740): paleoData_isPrimary: '' has been replaced by 'FALSE'
temperature (GH34755740): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
needsToBeChanged (GHa2c65bb2): paleoData_isPrimary: '' has been replaced by 'FALSE'
needsToBeChanged (GHa2c65bb2): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
age (WEB-187cf-3761-4de6-a5b5-a7509): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_isPrimary: '' has been replaced by 'FALSE'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
age (WEB34a305f8): paleoData_primaryAgeColumn: '' has been replaced by 'TRUE'
year (WEB647031c0): paleoData_primaryAgeColumn: '' has been replaced by 'FALSE'
temperature (GH34755740): interpretation1_seasonalityGeneral: 'annual' has been replaced by 'Annual'
temperature (GH34755740): paleoData_proxyGeneral: 'other ice' has been replaced by 'cryophysical'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_proxyGeneral: 'biophysical' has been replaced by 'cryophysical'
originalDataUrl: 'www.ncdc.noaa.gov/paleo/study/2475' has been replaced by 'https://doi.org/10.25921/36sb-3355'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): interpretation1_variableDetail: 'precipitation@surface' has been replaced by 'amount@surface'
temperature (GH34755740): paleoData_proxyDetail: 'glacier ice' has been replaced by 'GlacierIce'
Updated lipdverse database entry with a changed file.
geo_elevation: '' has been replaced by '3200'
temperature (GH34755740): paleoData_proxy: 'hybrid-ice' has been replaced by 'multiproxy'
needsToBeChanged (GHa2c65bb2): paleoData_datum: '' has been replaced by '1950'
needsToBeChanged (GHa2c65bb2): paleoData_notes: '' has been replaced by 'NA; paleoData_datum has been standardized'
needsToBeChanged (GHa2c65bb2): paleoData_units: 'BP' has been replaced by 'yr BP'
needsToBeChanged (GHa2c65bb2): paleoData_variableName: 'kyryr BP2' has been replaced by 'needsToBeChanged'
age (WEB-187cf-3761-4de6-a5b5-a7509): paleoData_datum: '' has been replaced by '1950'
age (WEB-187cf-3761-4de6-a5b5-a7509): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized'
age (WEB-187cf-3761-4de6-a5b5-a7509): paleoData_isPrimary: '' has been replaced by 'TRUE'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_proxy: 'Ice Accumulation' has been replaced by 'ice accumulation'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_units: 'mm/a' has been replaced by 'mm/yr'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_variableName: 'Ice Accumulation' has been replaced by 'accumulation'
age (WEB34a305f8): paleoData_datum: '' has been replaced by '1950'
age (WEB34a305f8): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized; paleoData_datum has been standardized'
age (WEB34a305f8): paleoData_units: 'BP' has been replaced by 'yr BP'
age (WEB34a305f8): paleoData_isPrimary: '' has been replaced by 'TRUE'
year (WEB647031c0): paleoData_notes: '' has been replaced by 'NA; paleoData_isPrimary has been standardized'
year (WEB647031c0): paleoData_units: 'AD' has been replaced by 'yr AD'
year (WEB647031c0): paleoData_isPrimary: '' has been replaced by 'TRUE'
temperature (GH34755740): interpretation1_seasonality: 'annual' has been replaced by 'Annual'
temperature (GH34755740): interpretation1_variable: 'T' has been replaced by 'temperature'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): interpretation1_seasonality: '1,2,3,4,5,6,7,8,9,10,11,12' has been replaced by 'Annual'
accumulation (WEB-ef183-b6de-44d7-8b46-61a47): interpretation1_variable: 'P' has been replaced by 'precipitation'
geo_elevation: '3200' has been replaced by ''
Ice Accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_datum: '' has been replaced by 'abs'
Ice Accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_notes: '' has been replaced by '"coring in the central region of a large, broad ice cap with sufficiently rapid snow accumulation, as in central Greenland, avoids significant contributions from any of these. “Noise” from snow drifts or other spatial heterogeneity in accumulation affects yearto-year accumulation, but snowdrift anomalies cannot be sustained for multiple years. Hence, accurate reconstructions of accumulation rate are straightforward over tens of thousands of years in central Greenland". (Alley et al., 2000)'
Ice Accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_proxy: 'Accumulation' has been replaced by 'Ice Accumulation'
Ice Accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_proxyDetail: '' has been replaced by 'Accumulation'
Ice Accumulation (WEB-ef183-b6de-44d7-8b46-61a47): paleoData_proxyGeneral: '' has been replaced by 'biophysical'
Ice Accumulation (WEB-ef183-b6de-44d7-8b46-61a47): interpretation1_seasonalityGeneral: '' has been replaced by 'Annual'
Column 'WEB-187cf-3761-4de6-a5b5-a7509', with variable name 'age', was added to the dataset
Column 'WEB-ef183-b6de-44d7-8b46-61a47', with variable name 'Ice Accumulation', was added to the dataset
Column 'GH129d82be', with variable name 'accumulation', was removed from the dataset
pub2_author: '' has been replaced by 'Alley, Richard B.'
pub2_issue: '' has been replaced by '1-5'
pub2_journal: '' has been replaced by 'Quaternary Science Reviews'
pub2_pages: '' has been replaced by '213-226'
pub2_publisher: '' has been replaced by 'Elsevier BV'
pub2_title: '' has been replaced by 'The Younger Dryas cold interval as viewed from central Greenland'
pub2_type: '' has been replaced by 'journal-article'
pub2_volume: '' has been replaced by '19'
pub2_year: '' has been replaced by '2000'
temperature (GH34755740): paleoData_QCCertification: 'AJO, AAC' has been replaced by 'AJO'
temperature (GH34755740): paleoData_QCnotes: 'Defer to Kobashi temperatures; NOAA lists Alley 2000 as the primary publication, but Cuffey and Clow 1997 is the primary publication, as Alley 2000 only deals with the younger dryas.' has been replaced by 'NOAA lists Alley 2000 as the primary publication, but Cuffey and Clow 1997 is the primary publication, as Alley 2000 only deals with the younger dryas.'
kyryr BP2 (GHa2c65bb2): interpretation1_scope: '' has been replaced by 'climate'
Accumulation (GH129d82be): paleoData_datum: '' has been replaced by 'abs'
Accumulation (GH129d82be): paleoData_proxyGeneral: 'Ice Accumulation' has been replaced by 'biophysical'
Accumulation (GH129d82be): paleoData_proxy: '' has been replaced by 'Ice Accumulation'
Accumulation (GH129d82be): paleoData_proxyDetail: '' has been replaced by 'Accumulation'
Accumulation (GH129d82be): paleoData_proxyGeneral: 'ice' has been replaced by 'Ice Accumulation'
Accumulation (GH129d82be): paleoData_QCCertification: '' has been replaced by 'CH'
Accumulation (GH129d82be): paleoData_variableName: 'accumulation' has been replaced by 'Accumulation'
Accumulation (GH129d82be): interpretation1_variableDetail: '@surface' has been replaced by 'precipitation@surface'
accumulation (GH129d82be): paleoData_notes: '' has been replaced by '"coring in the central region of a large, broad ice cap with sufficiently rapid snow accumulation, as in central Greenland, avoids significant contributions from any of these. “Noise” from snow drifts or other spatial heterogeneity in accumulation affects yearto-year accumulation, but snowdrift anomalies cannot be sustained for multiple years. Hence, accurate reconstructions of accumulation rate are straightforward over tens of thousands of years in central Greenland". (Alley et al., 2000)'
accumulation (GH129d82be): paleoData_proxyGeneral: '' has been replaced by 'ice'
accumulation (GH129d82be): interpretation1_direction: '' has been replaced by 'positive'
accumulation (GH129d82be): interpretation1_scope: '' has been replaced by 'climate'
accumulation (GH129d82be): interpretation1_seasonality: '' has been replaced by '1,2,3,4,5,6,7,8,9,10,11,244'
accumulation (GH129d82be): interpretation1_seasonalityGeneral: '' has been replaced by 'Annual'
accumulation (GH129d82be): interpretation1_variable: '' has been replaced by 'P'
accumulation (GH129d82be): interpretation1_variableDetail: '' has been replaced by '@surface'
accumulation (GH129d82be): interpretation1_scope: 'climate' has been replaced by ''
kyryr BP2 (GHa2c65bb2): interpretation1_scope: 'climate' has been replaced by ''
This marks the creation of the changelog, and marks the status of this dataset as of Temp12k version 1.0.1
Temperature, accumulation, and ice sheet elevation in central Greenland through the last deglacial transition
The Younger Dryas cold interval as viewed from central Greenland