Variability of the northeast Atlantic sea surface Δ14C and marine reservoir age and the North Atlantic Oscillation (NAO)

Laborde, Nadine; Paterne, Martine; Métivier, Bernard; Arnold, Maurice; Yiou, Pascal; Blamart, Dominique; Raynaud, Stephane

doi:10.1016/j.quascirev.2010.06.013

Cited by 47 publications

(25 citation statements)

References 86 publications

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“…On the other hand, a recent study concerning the 14 C content determination of marine mollusc shells collected off the European Atlantic margin between 45º N and 60º N showed that ΔR takes the value of -7±50 14 C yr (Tisnérat-Laborde et al, 2010) which is in accordance with the prevailing oceanographic conditions of that region influenced by the North Atlantic Current and where the coastal upwelling is not present. Another example could be the research carried out concerning the Canary Archipelago.…”

Section: The Marine Radiocarbon Reservoir Effect (δR)supporting

confidence: 53%

Radiocarbon Dating of Marine Shells from the Gulf of Cadiz: The marine radiocarbon reservoir effect, its variability during the Holocene and palaeoenvironmental inferences.

Soares

2015

CyG

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The ocean reservoir is deficient in radiocarbon compared with the atmosphere and, consequently, an offset in 14C age exists between coeval samples containing marine carbon versus those containing terrestrial carbon. A record of past reservoir ages is preserved in the 14C ages of contemporary marine and terrestrial material. The quantification of the marine radiocarbon reservoir effect (ΔR) is of crucial importance to the correct calibration of the 14C ages of marine samples. For the southern Atlantic Iberian coast, for the last 3000 yr, ΔR takes the following values +69±17 14C yr (Barlavento coast), -26±14 14C yr (Sotavento coast), and -108±31 14C yr (Andalusian coast), which are in accordance with the oceanographic conditions present in each area. Results also suggest that during the 5th millennium cal BP very different oceanographic conditions (high positive ΔR values) prevail in the Barlavento and in the Atlantic Andalusian coastal areas and, consequently, in all the northern Gulf of Cadiz region, perhaps due to the extension of the Azores Front eastward along the Azores Current penetrating into the Gulf of Cadiz.

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Section: The Marine Radiocarbon Reservoir Effect (δR)supporting

confidence: 53%

Radiocarbon Dating of Marine Shells from the Gulf of Cadiz: The marine radiocarbon reservoir effect, its variability during the Holocene and palaeoenvironmental inferences.

Soares

2015

CyG

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“…yr B.P., depending on the strength of the North Atlantic Current (NAC ;Wanamaker Jr et al, 2012). Feedbacks between the NAC and the NAO atmospheric circulation pattern have also influenced DR along French Atlantic coasts between 1885 and 1950 CE by 90 to 170 years (Tisnérat-Laborde et al, 2010). In the present study, such changes in the DR parameter were not considered for calibrating the 14 C ages (Table 2), which could have an impact on the chronological boundaries of CSPs.…”

Section: Uncertainties and Perspectivesmentioning

confidence: 96%

“…First, 14 C ages were calibrated against Marine13 reference curve (Reimer et al, 2013). The regional reservoir offset value DR, which is here −28 ± 23, is the inverse-error weighted average of 4 measurements carried out on mollusc shells of the Pertuis Charentais (−36 ± 40, −34 ± 60, −32 ± 39, +7 ± 60; Tisnérat-Laborde et al, 2010) .…”

Section: C Data Processingmentioning

confidence: 99%

Climate control on late Holocene high-energy sedimentation along coasts of the northeastern Atlantic Ocean

Poirier

Tessier

Chaumillon

2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The gray arrows indicate the  14 C drops discussed in the text. Tisnérat-Laborde et al (2010) showed that NEA surface waters result from a mixture of subtropical (Bermuda 14 C signature) and subpolar mode waters, the latter being the upstream source of the 14 Cdepleted Labrador Sea. This mixing leads to lower  14 C values for the NEA and, consequently, for the Mediterranean Sea compared to Bermuda waters.…”

Section: Pre-bomb D 14 C Signaturementioning

confidence: 99%

A High-Resolution Coral-Based Δ14C Record of Surface Water Processes in the Western Mediterranean Sea

Tisnérat‐Laborde

Montagna

McCulloch³

et al. 2013

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ABSTRACT. The first high-resolution time series of pre-and post-bomb radiocarbon measurements is reported for surface waters in the western Mediterranean Sea. The  14 C record was obtained from the aragonite skeleton of Cladocora caespitosa using a 50-yr-old corallite collected in the Ligurian Sea in 1998. Laser-ablation ICP measurements of trace elements (Li/Mg and Sr/Ca) show a strong seasonal variability, enabling the chronology of the  14 C record to be determined at annual timescales. The mean  14 C of pre-bomb surface water is -56 ± 3‰, corresponding to a reservoir age of 262 ± 29 yr. The postbomb maximum occurs in 1972 with a  14 C value of 90‰, significantly lower than the peak of 150‰ observed in the North Atlantic. The dilution of the peak-amplitude of  14 C in western Mediterranean surface waters is attributed to mixing of North Atlantic Central Water inflow with relatively depleted underlying Intermediate Mediterranean and Levantine Intermediate waters. Intensification of this mixing is observed in 1963-1964, consistent with the change in atmospheric circulation from a positive to negative NAO phase (1960)(1961)(1962)(1963)(1964)(1965)(1966)(1967). The post-peak  14 C variability is relatively limited, reflecting mainly local vertical mixing forced by wind stress.

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Variability of the northeast Atlantic sea surface Δ14C and marine reservoir age and the North Atlantic Oscillation (NAO)

Cited by 47 publications

References 86 publications

Radiocarbon Dating of Marine Shells from the Gulf of Cadiz: The marine radiocarbon reservoir effect, its variability during the Holocene and palaeoenvironmental inferences.

Radiocarbon Dating of Marine Shells from the Gulf of Cadiz: The marine radiocarbon reservoir effect, its variability during the Holocene and palaeoenvironmental inferences.

Climate control on late Holocene high-energy sedimentation along coasts of the northeastern Atlantic Ocean

A High-Resolution Coral-Based Δ14C Record of Surface Water Processes in the Western Mediterranean Sea

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