@misc{53149, type = "Article", year = "2017", title = "Regional seesaw between the North Atlantic and Nordic Seas during the last glacial abrupt climate events", journal = "Climate Of The Past", editor = "Copernicus Gesellschaft Mbh", volume = "13", number = "6", pages = "729-739", author = "Wary Melanie, Eynaud Frederique, Swingedouw Didier, Masson-Delmotte Valerie, Matthiessen Jens, Kissel Catherine, Zumaque Jena, Rossignol Linda, Jouzel Jean", url = "https://archimer.ifremer.fr/doc/00420/53149/", organization = "", address = "FRANCE, GERMANY, CANADA", doi = "https://doi.org/10.5194/cp-13-729-2017", abstract = "
Dansgaard-Oeschger oscillations constitute one of the most enigmatic features of the last glacial cycle. Their cold atmospheric phases have been commonly associated with cold sea-surface temperatures and expansion of sea ice in the North Atlantic and adjacent seas. Here, based on dinocyst analyses from the 48-30 ka interval of four sediment cores from the northern Northeast Atlantic and southern Norwegian Sea, we provide direct and quantitative evidence of a regional paradoxical seesaw pattern: cold Greenland and North Atlantic phases coincide with warmer sea-surface conditions and shorter seasonal sea-ice cover durations in the Norwegian Sea as compared to warm phases. Combined with additional palaeorecords and multi-model hosing simulations, our results suggest that during cold Greenland phases, reduced Atlantic meridional overturning circulation and cold North Atlantic sea-surface conditions were accompanied by the subsurface propagation of warm Atlantic waters that re-emerged in the Nordic Seas and provided moisture towards Greenland summit.
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