globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.07.007
Scopus记录号: 2-s2.0-85049825733
论文题名:
Subpolar North Atlantic sea surface temperature since 6 ka BP: Indications of anomalous ocean-atmosphere interactions at 4-2 ka BP
作者: Orme L.C.; Miettinen A.; Divine D.; Husum K.; Pearce C.; Van Nieuwenhove N.; Born A.; Mohan R.; Seidenkrantz M.-S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 194
起始页码: 128
结束页码: 142
语种: 英语
英文关键词: Diatoms ; East Greenland current ; Holocene ; Micropaleontology ; North Atlantic ; North Atlantic oscillation ; Paleoceanography ; Paleoclimatology ; Sea surface temperature ; Sedimentology-marine cores
Scopus关键词: Atmospheric pressure ; Climate change ; Oceanography ; Submarine geophysics ; Surface properties ; Surface reconstruction ; Surface waters ; Diatoms ; East greenland currents ; Holocenes ; Marine cores ; Micropaleontology ; North Atlantic ; North Atlantic oscillations ; Paleoceanography ; Paleoclimatology ; Sea surface temperature (SST) ; Atmospheric temperature ; atmosphere-ocean coupling ; atmospheric circulation ; climate change ; diatom ; diatomite ; global ocean ; Holocene ; micropaleontology ; North Atlantic Oscillation ; oceanic circulation ; paleoceanography ; paleoclimate ; reconstruction ; sea surface temperature ; sediment core ; temperature gradient ; Arctic Ocean ; Atlantic Ocean ; Atlantic Ocean (North) ; East Greenland Current ; Iceland Basin ; Bacillariophyta
英文摘要: Atmospheric circulation may change with future climate change in response to modification of meridional temperature gradients, but the potential influence on ocean circulation is as yet unclear. Over the mid-late Holocene, atmospheric circulation in the North Atlantic region has fluctuated on millennial timescales; therefore, the ocean response to these changes can be investigated using the paleoceanographic records that have been developed in the north-eastern subpolar North Atlantic. Here, we present a diatom-based sea surface temperature reconstruction from the Iceland Basin, south of Iceland; the reconstruction shows the warmest temperatures of the record at 6.1–4 ka BP, cooler temperatures at 4-2 ka BP and warmer temperatures thereafter. Inter-record comparisons indicate that the cold period at c. 4-2 ka BP may have resulted from a strengthened East Greenland Current and/or melting of the Greenland ice sheet, in response to a negative North Atlantic Oscillation. The findings highlight that atmospheric circulation changes are likely to cause pronounced variations in the latitudinal exchange of heat, which may have consequences for deep-water formation and global ocean circulation. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112106
Appears in Collections:气候减缓与适应

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作者单位: Norwegian Polar Institute, Fram Centre, P.O. Box 6606 Langnes, Tromsø, 9296, Norway; Department of Mathematics and Statistics, Faculty of Science and Technology, The Arctic University of Norway, Tromsø, N-9037, Norway; Centre for Past Climate Studies, Arctic Research Centre and iClimate, Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2, building 1672, 213, Aarhus C, 8000, Denmark; Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive FrederictonNB E3B 5A3, Canada; Department of Earth science, University of Bergen, Postboks 7803, Bergen, 5020, Norway; Bjerknes Centre for Climate Research, University of Bergen, Postboks 7803, Bergen, 5020, Norway; National Centre for Antarctic and Ocean Research, Ministry of Earth Sciences, Government of India, Headland Sada, Vasco-da-Gama, Goa 403 804, India

Recommended Citation:
Orme L.C.,Miettinen A.,Divine D.,et al. Subpolar North Atlantic sea surface temperature since 6 ka BP: Indications of anomalous ocean-atmosphere interactions at 4-2 ka BP[J]. Quaternary Science Reviews,2018-01-01,194
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