Grain size distribution, Ca/Fe ratios and elemental composition of sediment core GS13-182-CC, Norwegian continental margin ...
The North Atlantic Oscillation is the dominant atmospheric driver of North Atlantic climate variability with phases corresponding to droughts and cold spells in Europe. Here, we exploit a suggested anti-correlation of North Atlantic Oscillation-phase and north-eastern North Atlantic primary producti...
| Main Authors: | , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
2020
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.925437 https://doi.pangaea.de/10.1594/PANGAEA.925437 |
| Summary: | The North Atlantic Oscillation is the dominant atmospheric driver of North Atlantic climate variability with phases corresponding to droughts and cold spells in Europe. Here, we exploit a suggested anti-correlation of North Atlantic Oscillation-phase and north-eastern North Atlantic primary productivity by investigation of south-eastern Norwegian Sea sediment cores spanning the last 8000 years. Age model uncertainties between 2 and 13 years for the period 1992-1850 AD allows for proxy to observational data calibration. Our data suggest that Ca/Fe core-scanning results reflect sedimentary CaCO3-variability in the region. Cross-correlating the Ca/Fe record with nearby phytoplankton counts and dissolved O2 data, suggests that Ca/Fe can be used as a proxy for primary productivity variability in the region. Our data support an anti-correlation of primary productivity to the winter North Atlantic Oscillation index. Hence, we propose a sub-decadally resolved palaeo-North Atlantic Oscillation reconstruction based on ... |
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