The Late Saalian surface ocean (140 ka): sensitivity of the Late Saalian Eurasian ice sheet to sea surface conditions
(English)Manuscript (preprint) (Other academic)
This work focuses on the Late Saalian (140 ka) and LGM (21 ka) Eurasian ice sheets surface mass balance (SMB) sensitivity to changes in sea surface temperatures (SST). Since no global Late Saalian SST compilations exist, we test the sensitivity of the Late Saalian climate using an AGCM forced with two data-based LGM SST reconstructions. Furthermore, an attempt to reconstruct the Late Saalian SST is performed using an AGCM coupled to a mixed-layer ocean. The resulting Late Saalian SST are cooler than the LGM SST in the Northern Hemisphere and warmer in the Southern. The winter sea ice extends to 40◦ N in both North Atlantic and Paciﬁc oceans. Changes in SST affect the SMB of the Eurasian ice sheet during both glaciations although the Late Saalian ice sheet is less sensitive to the prescribed SST changes than the LGM.
Sea surface conditions, Late Saalian, Eurasian ice sheet, Climate modelling, Quaternary
Climate Research Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:su:diva-29300OAI: oai:DiVA.org:su-29300DiVA: diva2:232270
ProjectsANR IDEGLACEThe Bert Bolin Center for Climate ResearchExplora Doc (Rhones Alpes)Lavoisier Cotutelle