Articles | Volume 17, issue 3
Clim. Past, 17, 1341–1362, 2021
https://doi.org/10.5194/cp-17-1341-2021
Clim. Past, 17, 1341–1362, 2021
https://doi.org/10.5194/cp-17-1341-2021

Research article 21 Jun 2021

Research article | 21 Jun 2021

Variations in mineralogy of dust in an ice core obtained from northwestern Greenland over the past 100 years

Naoko Nagatsuka et al.

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Short summary
Here we present a first high-temporal-resolution record of mineral composition in a Greenland ice core (SIGMA-D) over the past 100 years using SEM–EDS analysis. Our results show that the ice core dust composition varied on multi-decadal scales, which was likely affected by local temperature changes. We suggest that the ice core dust was constantly supplied from distant sources (mainly northern Canada) as well as local ice-free areas in warm periods (1915 to 1949 and 2005 to 2013).