Publication Date:
2021-06-25
Description:
This work focuses on the Late Saalian (140 ka)
Eurasian ice sheets’ surface mass balance (SMB) sensitivity
to changes in sea surface temperatures (SST). An
Atmospheric General Circulation Model (AGCM), forced
with two preexisting Last Glacial Maximum (LGM, 21 ka)
SST reconstructions, is used to compute climate at 140 and
21 ka (reference glaciation). Contrary to the LGM, the
ablation almost stopped at 140 ka due to the climatic
cooling effect from the large ice sheet topography. Late
Saalian SST are simulated using an AGCM coupled with a
mixed layer ocean. Compared to the LGM, these 140 ka
SST show an inter-hemispheric asymmetry caused by the
larger ice-albedo feedback, cooling climate. The resulting
Late Saalian ice sheet SMB is smaller due to the extensive
simulated sea ice reducing the precipitation. In conclusion,
SST are important for the stability and growth of the Late
Saalian Eurasian ice sheet.
Description:
Published
Description:
531-553
Description:
3.7. Dinamica del clima e dell'oceano
Description:
JCR Journal
Description:
restricted
Keywords:
Sea surface temperatures
;
Late Saalian
;
Last Glacial Maximum
;
Eurasian ice sheet
;
Climate modelling
;
Quaternary
;
01. Atmosphere::01.01. Atmosphere::01.01.02. Climate
;
02. Cryosphere::02.02. Glaciers::02.02.02. Cryosphere/atmosphere Interaction
;
03. Hydrosphere::03.01. General::03.01.06. Paleoceanography and paleoclimatology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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