Last interglacial seasonal hydroclimate in the North Sea–Baltic Sea region

S. Ni, Z. Lu, Q. Zhang,J. Groeneveld,K.L. Knudsen,M.-S. Seidenkrantz,H.L. Filipsson

Quaternary Science Reviews（2023）

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Abstract

The Last Interglacial (LIG) experienced substantial changes in seasonal insolation compared with the present day, which may have affected the hydrography and water-mass exchange in the North Sea and Baltic Sea region. Here we investigate the effects of solar radiation and greenhouse gas (GHG) forcing on the regional climate by analyzing model simulations of the LIG (127 ka BP), pre-industrial (PI, 1850 CE), and present-day (PD, 1990 CE) climates. We also interpret the reconstructed seasonal bottom water conditions using benthic foraminifera and geochemistry data.

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Key words

The Last Interglacial,Seasonality,EC-Earth model,Insolation,Greenhouse Gas (GHG),Hydrography,Data-model comparison,Baltic Sea,Paleoceanography,Temperature,Salinity,North Atlantic Oscillation (NAO),Precipitation,Evaporation

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