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| Titel |
Northwest Pacific Ocean during the last 20,000 years: Initial results of the Sino-German Pacific Ocean Experiment (SiGePax) |
| VerfasserIn |
Gerrit Lohmann, Lester Lembke-Jene, Patrick Scholz, Xun Gong, Lars Max, Ralf Tiedemann, Xuefa Shi, Jianjun Zou, Yanguang Liu, Yonghua Wu, Shulan Ge |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250132127
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| Publikation (Nr.) |
 EGU/EGU2016-12605.pdf |
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| Zusammenfassung |
| Arctic and Subarctic Regions are most sensitive to climate change, and reversely provide dramatic feedbacks to the global climate. Paleoclimate studies in these regions are of vital importance for a better understanding of the natural processes in the climate system prior to the influences of human activities. With a focus on discovering paleoceanographic evolutions in the Northwest Pacific Ocean during the last 20,000 years, we show first results of the German-Sino cooperation programme SiGePax. We present a collection of sediment cores covering climatical key regions in the Northwest Pacific Ocean. Our climate simulations provide the first step towards ‘Data-Model Syntheses’, which are crucial for exploring the underlying mechanisms of observed changes in proxy records. Analyses of Holocene sea surface temperature records on a basin-wide scale show a spatially heterogenous, but no simple warming or cooling pattern, indicating that extratropical atmospheric dynamics is involved. The temperature data are compared to model scenarios. We use the Finite-Element Sea-Ice Ocean Model (FESOM) in a global configuration, with a regional focus on the marginal seas of the Northwest Pacific Ocean to provide the underlying dynamics. We find that the Okhotsk Sea is characterized by a highly dynamical sea-ice cover, where due to brine release, the Okhotsk Sea Intermediate Water is formed, contributing to North Pacific Intermediate Water. |
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