(Table 1) Micro-inclusion counts and ion concentrations in the five GRIP ice-core sections

We provide the first direct evidence that a number of water-soluble compounds, in particular calcium sulfate (CaSO4 2H2O) and calcium carbonate (CaCO3), are present as solid, micron-sized inclusions within the Greenland GRIP ice core. The compounds are detected by two independent methods: micro-Rama...

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Bibliographic Details
Main Authors: Sakurai, Toshimitsu, Iizuka, Yoshinori, Horikawa, Shinichiro, Johnsen, Sigfús Jóhann, Dahl-Jensen, Dorthe, Steffensen, Jørgen Peder, Hondoh, Takeo
Format: Dataset
Language:English
Published: PANGAEA 2009
Subjects:
AGE
Calcium cation
Chloride anion
Depth
bottom/max
ice/snow
top/min
Diameter
Epoch
Greenland
Greenland Ice Core Projects
GRIP
GRIP/GISP/NGRIP
International Polar Year (2007-2008)
IPY
ISTUK
ISTUK electromechanical drill
Magnesium cation
Nitrate ion
Number
Particle concentration
Sampling/drilling ice
Sodium cation
Standard deviation
Sulfate anion
Thickness
GISP
Greenland ice core
ice core
International Polar Year
Journal of Glaciology
NGRIP
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.833919
https://doi.org/10.1594/PANGAEA.833919
Description
Summary:We provide the first direct evidence that a number of water-soluble compounds, in particular calcium sulfate (CaSO4 2H2O) and calcium carbonate (CaCO3), are present as solid, micron-sized inclusions within the Greenland GRIP ice core. The compounds are detected by two independent methods: micro-Raman spectroscopy of a solid ice sample, and energy-dispersive X-ray spectroscopy of individual inclusions remaining after sublimation. CaSO4 2H2O is found in abundance throughout the Holocene and the last glacial period, while CaCO3 exists mainly in the glacial period ice. We also present size and spatial distributions of the micro-inclusions. These results suggest that water-soluble aerosols in the GRIP ice core are dependable proxies for past atmospheric conditions.

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