Climate of the Past
Climate of the Past
CP
Articles | Volume 21, issue 9
Articles | Volume 21, issue 9
https://doi.org/10.5194/cp-21-1595-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-1595-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 9
Research article
 | 
11 Sep 2025
Research article |  | 11 Sep 2025

A new 1500-year-long varve thickness record from Labrador, Canada, uncovers significant insights into large-scale climate variability in the Atlantic

François Lapointe, Antoine Gagnon-Poiré, Pierre Francus, Patrick Lajeunesse, and Clarence Gagnon

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Short summary
A new 1500-year-long sediment record made of annual laminations (varves) from Grand Lake, Labrador, reveals past hydroclimatic conditions. The Medieval Climate Anomaly (~1050–1225 CE) had thicker varves indicating more precipitation, while the Little Ice Age (1400–1875 CE) had thinner varves, suggesting a dryer climate. Teleconnections show that Grand Lake is influenced by winter North Atlantic Oscillation (NAO), hence making this record a promising candidate for future NAO reconstructions.
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