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

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

doi:10.5194/cp-21-1595-2025

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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Cited articles

Banfield, C. E. and Jacobs, J. D.: Regional patterns of temperature and precipitation for Newfoundland and Labrador during the past century, Can. Geogr.–Geogr. Can., 42, 354–364, https://doi.org/10.1111/j.1541-0064.1998.tb01351.x, 1998.

Blaauw, M.: Methods and code for “classical” age-modelling of radiocarbon sequences, Quat. Geochronol., 5, 512–518, https://doi.org/10.1016/j.quageo.2010.01.002, 2010.

Bonsal, B. and Shabbar, A.: Impacts of Large-Scale Circulation Variability on Low Streamflows over Canada: A Review, Can. Water Resour. J., 33, 137–154, https://doi.org/10.4296/cwrj3302137, 2008.

Bonsal, B. R., Peters, D. L., Seglenieks, F., Rivera, A., and Berg, A.: Changes in freshwater availability across Canada, Chap. 6 in Canada's Changing Climate Report, edited by: Bush, E. and Lemmen, D. S., Government of Canada, Ottawa, Ontario, 261–342, https://natural-resources.canada.ca/sites/www.nrcan.gc.ca/files/energy/Climate-change/pdf/CCCR-Chapter6-ChangesInFreshwaterAvailabilityAcrossCanada.pdf, 2019.

Boucher, E., Nicault, A., Arseneault, D., Begin, Y., and Karami, M. P.: Decadal Variations in Eastern Canada's Taiga Wood Biomass Production Forced by Ocean-Atmosphere Interactions, Sci. Rep., 7, 2457, https://doi.org/10.1038/s41598-017-02580-9, 2017.