Articles | Volume 20, issue 3
https://doi.org/10.5194/cp-20-625-2024
https://doi.org/10.5194/cp-20-625-2024
Research article
 | 
21 Mar 2024
Research article |  | 21 Mar 2024

Abrupt warming and alpine glacial retreat through the last deglaciation in Alaska interrupted by modest Northern Hemisphere cooling

Joseph P. Tulenko, Jason P. Briner, Nicolás E. Young, and Joerg M. Schaefer

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Cited articles

Badding, M. E., Briner, J. P., and Kaufman, D. S.: 10Be ages of late Pleistocene deglaciation and Neoglaciation in the north-central Brooks Range, Arctic Alaska, J. Quaternary Sci., 28, 95–102, https://doi.org/10.1002/jqs.2596, 2013. 
Balco, G.: Technical note: A prototype transparent-middle-layer data management and analysis infrastructure for cosmogenic-nuclide exposure dating, Geochronology, 2, 169–175, https://doi.org/10.5194/gchron-2-169-2020, 2020. 
Balco, G., Stone, J. O., Lifton, N. A., and Dunai, T. J.: A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements, Quat. Geochronol., 3, 174–195, 2008. 
Balco, G., Briner, J., Finkel, R. C., Rayburn, J. A., Ridge, J. C., and Schaefer, J. M.: Regional beryllium-10 production rate calibration for late-glacial northeastern North America, Quat. Geochronol., 4, 93–107, 2009. 
Barclay, D. J., Wiles, G. C., and Calkin, P. E.: Holocene glacier fluctuations in Alaska, Quaternary Sci. Rev., 28, 2034–2048, https://doi.org/10.1016/j.quascirev.2009.01.016, 2009. 
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Short summary
We take advantage of a site in Alaska – where climate records are limited and a former alpine glacier deposited a dense sequence of moraines spanning the full deglaciation – to construct a proxy summer temperature record. Building on age constraints for moraines in the valley, we reconstruct paleo-glacier surfaces and estimate the summer temperatures (relative to the Little Ice Age) for each moraine. The record suggests that the influence of North Atlantic climate forcing extended to Alaska.
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