Firn cores obtained in Northern Greenland in 2015 ...

Results from six firn cores obtained during a 426 km long northern Greenland traverse in 2015 between the NEEM and the EGRIP deep drilling stations situated on the Western and Eastern side of the Greenland ice sheet, respectively. The cores (9 to 14 m long) are analysed for chemical impurities by me...

Full description

Bibliographic Details
Main Authors: Kjær, Helle Astrid, Zens, Patrick, Black, Samuel, Lund, Kasper Holst, Svensson, Anders M, Vallelonga, Paul T
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
acidity
ammonium
calcium
Conductivity
dust
firn
Firn chemistry
Greenland
peroxide
Event label
Core
LATITUDE
LONGITUDE
ELEVATION
Core length
AGE
Age, maximum/old
Age, minimum/young
Age, uncertainty
Accumulation of snow/ice per year
Uncertainty
Snow pits/firn core/ice core
Ruler stick
Annual layer counting based on H₂O₂ and/or insoluble dust
Arctic Sea Ice and Greenland Ice Sheet Sensitivity ice2ice
East Greenland Ice-core Project EGRIP
North Greenland Eemian Ice Drilling NEEM
Tipping Points in the Earth System TiPES
Arctic
East Greenland
East Greenland Ice-core Project
Greenland ice core
Greenland Ice core Project
ice core
Ice Sheet
North Greenland
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.952933
https://doi.pangaea.de/10.1594/PANGAEA.952933
Description
Summary:Results from six firn cores obtained during a 426 km long northern Greenland traverse in 2015 between the NEEM and the EGRIP deep drilling stations situated on the Western and Eastern side of the Greenland ice sheet, respectively. The cores (9 to 14 m long) are analysed for chemical impurities by means of Continuous Flow Analysis (CFA); Insoluble dust, ammonium, calcium, acid, conductivity and peroxide. The data was dated by means of annual layer counting of mainly peroxide supplemented by calcium seasonal cycles and spans 18 to 53 years (±3 yrs) depending on local snow accumulation that decreases from west to east. Insoluble dust, ammonium, and calcium concentrations in the 6 firn cores overlap, and also the seasonal cycles are similar in timing and magnitude across sites, while peroxide (H2O2) and conductivity both have spatial variations. H2O2 is driven by the accumulation pattern and conductivity is likely influenced by sea salt. Data is published as part of Kjær et al. 2022, Climate of the past, ...

Similar Items