Articles | Volume 17, issue 17
Atmos. Chem. Phys., 17, 10223–10243, 2017
https://doi.org/10.5194/acp-17-10223-2017

Special issue: The Saharan Aerosol Long-range Transport and Aerosol-Cloud-interaction...

Atmos. Chem. Phys., 17, 10223–10243, 2017
https://doi.org/10.5194/acp-17-10223-2017
Research article
01 Sep 2017
Research article | 01 Sep 2017

Harmattan, Saharan heat low, and West African monsoon circulation: modulations on the Saharan dust outflow towards the North Atlantic

Kerstin Schepanski et al.

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Cited articles

Ansmann, A., Petzold, A., Kandler, K., Tegen, I., Wendisch, M., Müller, D., Weinzierl, B., Müller, T., and Heintzenberg, J.: Saharan Mineral Dust Experiments SAMUM-1 and SAMUM-2: what have we learned?, Tellus, 63B, 403–429, https://doi.org/10.1111/j.1600-0889.2011.00555.x, 2011.
Ashpole, I. and Washington, R.: Intraseasonal variability and atmospheric controls on daily dust occurrence frequency over the central and western Sahara during the boreal summer, J. Geophys. Res., 118, 12915–12926, https://doi.org/10.1002/2013JD020267, 2013.
Banks, J. R., Brindley, H. E., Stenchikov, G., and Schepanski, K.: Satellite retrievals of dust aerosol over the Red Sea and the Persian Gulf (2005–2015), Atmos. Chem. Phys., 17, 3987–4003, https://doi.org/10.5194/acp-17-3987-2017, 2017.
Bergametti, G., Rajot, J. L., Pierre, C., Bouet, C., and Marticorena, B.: How long does precipitation inhibit wind erosion in the Sahel?, Geophys. Res. Lett., 43, 6643–6649, https://doi.org/10.1002/2016GL069324, 2016.
Berge, E.: Transboundary air pollution in Europe. In: MSC-W Status Report 1997, Part 1 and 2, EMEP/MSC-W Report 1/97, The Norwegian Meteorological Institute, Oslo, Norway, 1997.
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Short summary
This study illustrates the complexity of the interaction among the three major circulation regimes stimulating the North African dust outflow: harmattan, Saharan heat low, and monsoon circulation. We analyse fields from model simulations and satellite observations in concert in order to link atmospheric circulation and dust source activation as well as to characterize their impact on the variability of the dust outflow towards the Atlantic.
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