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| Lohmann, G.; Pfeiffer, M.; Laepple, T.; Leduc, G.; Kim, J-h.. |
| We compare the ocean temperature evolution of the Holocene as simulated by climate models and reconstructed from marine temperature proxies. We use transient simulations from a coupled atmosphere-ocean general circulation model, as well as an ensemble of time slice simulations from the Paleoclimate Modelling Intercomparison Project. The general pattern of sea surface temperature (SST) in the models shows a high-latitude cooling and a low-latitude warming. The proxy dataset comprises a global compilation of marine alkenone- and Mg/Ca-derived SST estimates. Independently of the choice of the climate model, we observe significant mismatches between modelled and estimated SST amplitudes in the trends for the last 6000 yr. Alkenone-based SST records show a... |
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| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00496/60739/65189.pdf |
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| Leduc, G.; Schneider, R.; Kim, J. -h.; Lohmann, G.. |
| In this study we review a global set of alkenone- and foraminiferal Mg/Ca-derived sea surface temperatures (SST) records from the Holocene and compare them with a suite of published Eemian SST records based on the same approach For the Holocene, the alkenone SST records belong to the actualized GHOST database (Kim, J.-H Schneider R.R., (2004) GHOST global database for alkenone-derived Holocene sea-surface temperature records. Available from. http.//www pangaea de/Projects/GHOST.), while the Mg/Ca-derived SST database represents a new compilation The actualized GHOST database not only confirms the SST changes previously described but also documents the Holocene temperature evolution in new oceanic regions such as the Northwestern Atlantic, the eastern... |
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| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00231/34229/32835.pdf |
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