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CP | Articles | Volume 14, issue 7
Clim. Past, 14, 1051–1066, 2018
https://doi.org/10.5194/cp-14-1051-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 14, 1051–1066, 2018
https://doi.org/10.5194/cp-14-1051-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 12 Jul 2018

Research article | 12 Jul 2018

Rapid increase in simulated North Atlantic dust deposition due to fast change of northwest African landscape during the Holocene

Sabine Egerer et al.
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Adkins, J., deMenocal, P., and Eshel, G.: The “African Humid Period” and the Record of Marine Upwelling from Excess 230Th in ODP Hole 658C, Paleoceanography, 21, PA4203, https://doi.org/10.1029/2005PA001200, 2006. a, b, c, d, e, f, g
Albani, S., Mahowald, N. M., Winckler, G., Anderson, R. F., Bradtmiller, L. I., Delmonte, B., François, R., Goman, M., Heavens, N. G., Hesse, P. P., Hovan, S. A., Kang, S. G., Kohfeld, K. E., Lu, H., Maggi, V., Mason, J. A., Mayewski, P. A., McGee, D., Miao, X., Otto-Bliesner, B. L., Perry, A. T., Pourmand, A., Roberts, H. M., Rosenbloom, N., Stevens, T., and Sun, J.: Twelve thousand years of dust: the Holocene global dust cycle constrained by natural archives, Clim. Past, 11, 869–903, https://doi.org/10.5194/cp-11-869-2015, 2015. a, b, c, d, e, f, g, h
Armitage, S. J., Bristow, C. S., and Drake, N. A.: West African monsoon dynamics inferred from abrupt fluctuations of Lake Mega-Chad, P. Natl. Acad. Sci., 112, 8543–8548, https://doi.org/10.1073/pnas.1417655112, 2015. a
Baker, R. A., Adams, C., Bell, G. T., Jickells, D. T., and Ganzeveld, L.: Estimation of atmospheric nutrient inputs to the Atlantic Ocean from 50°N to 50°S based on large scale field sampling: Iron and other dust associated elements, Global Biogeochem. Cy., 27, 755–767, https://doi.org/10.1002/gbc.20062, 2013. a
Bartlein, P.: Pollen-based continental climate reconstructions at 6 and 21 ka: a global synthesis, Clim. Dynam., 37, 775–802, https://doi.org/10.1007/s00382-010-0904-1, 2011. a, b, c, d
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Short summary
We find a rapid increase in simulated dust deposition between 6 and 4 ka BP that is fairly consistent with an abrupt change in dust deposition that was observed in marine sediment records at around 5 ka BP. This rapid change is caused by a rapid increase in simulated dust emissions in the western Sahara due to a fast decline in vegetation cover and a locally strong reduction of lake area. Our study identifies spatial and temporal heterogeneity in the transition of the North African landscape.
We find a rapid increase in simulated dust deposition between 6 and 4 ka BP that is fairly...
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