Accumulation rate and stable oxygen isotope ratios of the ice cores from the North Greenland Traverse ...

• Main Authors: Weißbach, Stefanie, Wegner, Anna, Opel, Thomas, Oerter, Hans, Vinther, Bo Møllesøe, Kipfstuhl, Sepp
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2016
• Subjects: Glaciology @ AWI AWI_Glac; Greenland; Ice Sheet; NGRIP; North Greenland
• Online Access: https://dx.doi.org/10.1594/pangaea.849161; https://doi.pangaea.de/10.1594/PANGAEA.849161

We present for the first time all 12 d18O records obtained from ice cores drilled in the framework of the North Greenland Traverse (NGT) between 1993 and 1995 in northern Greenland. The cores cover an area of 680 km × 317 km, 10 % of the Greenland ice sheet. Depending on core length (100-175 m) and accumulation rate (90-200 kg/m**2/a) the single records reflect an isotope-temperature history over the last 500-1100 years.Lowest d18O mean values occur north of the summit and east of the main divide as a consequence of Greenland's topography. In general, ice cores drilled on the main ice divide show different results than those drilled east of the main ice divide that might be influenced by secondary regional moisture sources. A stack of all NGT records and the NGRIP record is presented with improved signal-to-noise ratio. Compared to single records, this stack represents the mean d18O signal for northern Greenland that is interpreted as proxy for temperature. Our northern Greenland d18O stack indicates ... : Supplement to: Weißbach, Stefanie; Wegner, Anna; Opel, Thomas; Oerter, Hans; Vinther, Bo Møllesøe; Kipfstuhl, Sepp (2016): Spatial and temporal oxygen isotope variability in northern Greenland – implications for a new climate record over the past millennium. Climate of the Past, 12(2), 171-188 ...