Articles | Volume 17, issue 1
Clim. Past, 17, 491–505, 2021
https://doi.org/10.5194/cp-17-491-2021
Clim. Past, 17, 491–505, 2021
https://doi.org/10.5194/cp-17-491-2021

Research article 23 Feb 2021

Research article | 23 Feb 2021

Atmospheric iron supply and marine productivity in the glacial North Pacific Ocean

François Burgay et al.

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Revised manuscript accepted for CP
Short summary

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Subject: Feedback and Forcing | Archive: Ice Cores | Timescale: Millenial/D-O
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Cited articles

Albani, S., Delmonte, B., Maggi, V., Baroni, C., Petit, J.-R., Stenni, B., Mazzola, C., and Frezzotti, M.: Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales, Clim. Past, 8, 741–750, https://doi.org/10.5194/cp-8-741-2012, 2012. 
Amo, M. and Minagawa, M.: Sedimentary record of marine and terrigenous organic matter delivery to the Shatsky Rise, western North Pacific, over the last 130 kyr, Org. Geochem., 34, 1299–1312, 2003. 
Baccolo, G., Delmonte, B., Albani, S., Baroni, C., Cibin, G., Frezzotti, M., Hampai, D., Marcelli, A., Revel, M., and Salvatore, M.: Regionalization of the atmospheric dust cycle on the periphery of the East Antarctic ice sheet since the last glacial maximum, Geochem. Geophy. Geosy. 19, 3540–3554, 2018. 
Basile, I., Grousset, F. E., Revel, M., Petit, J. R., Biscaye, P. E., and Barkov, N. I.: Patagonian origin of glacial dust deposited in East Antarctica (Vostok and Dome C) during glacial stages 2, 4 and 6, Earth Planet. Sci. Lett., 146, 573–589, 1997. 
Boyd, P., Muggli, D., Varela, D., Goldblatt, R., Chretien, R., Orians, K., and Harrison, P.: In vitro iron enrichment experiments in the NE subarctic Pacific, Mar. Ecol. Progr. Ser., 136, 179–193, 1996. 
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Short summary
We present the first Fe record from the NEEM ice core, which provides insight into past atmospheric Fe deposition in the Arctic. Considering the biological relevance of Fe, we questioned if the increased eolian Fe supply during glacial periods could explain the marine productivity variability in the Fe-limited subarctic Pacific Ocean. We found no overwhelming evidence that eolian Fe fertilization triggered any phytoplankton blooms, likely because other factors play a more relevant role.