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| Kasper, Sebastian; Van Der Meer, M. T. J.; Mets, A.; Zahn, R.; Damste, J. S. Sinninghe; Schouten, S.. |
| At the southern tip of Africa, the Agulhas Current reflects back into the Indian Ocean causing so-called "Agulhas rings" to spin off and release relatively warm and saline water into the South Atlantic Ocean. Previous reconstructions of the dynamics of the Agulhas Current, based on paleo-sea surface temperature and sea surface salinity proxies, inferred that Agulhas leakage from the Indian Ocean to the South Atlantic was reduced during glacial stages as a consequence of shifted wind fields and a northwards migration of the subtropical front. Subsequently, this might have led to a buildup of warm saline water in the southern Indian Ocean. To investigate this latter hypothesis, we reconstructed sea surface salinity changes using alkenone delta D, and... |
| Tipo: Text |
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| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00274/38488/36959.pdf |
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| Kasper, Sebastian. |
| The extent of the general warming related to increasing anthropogenic CO2 emission and its implications for the global climate system are currently under heavy debate. In particular the extrapolation of long term climatic trends relies on complex climate models for the interaction between the atmosphere, the oceans and the land surface. In turn these models require validation based on continuous time series of observational data. However, instrumental based data records only extend as far back as approximately 150 years and thus make the validation of long-term modelling experiments difficult. To obtain information on past climate beyond the instrumental period, so-called paleoceanographic proxies are used. Two of the most targeted paleoceanographic... |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00494/60590/64075.pdf |
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