1. Fig. 1 Modern dust transport over the North Atlantic basin.
Modern dust transport over the North Atlantic basin. (A) Map of boreal summer [June-July-August-September (JJAS)] dust aerosol optical depth (AOD) (color bar) over the North Atlantic showing the transport of African dust across the basin. Contours show r2 values for the relationship between dust deposition at the Bahamas core sites (100GGC and 103GGC, indicated by the star) and dust loading over the rest of the North Atlantic in the Goddard Earth Observing System–Chemistry (GEOS-Chem) model (3). Correlations are significant for r2 > 0.2. Inset shows correlation between modeled mean dust AOD over the Bahamas and dust AOD averaged over the mid-Atlantic (0°N to 30°N and 0°W to 50°W) in JJAS for each year from 1982 to (B) As in (A), but for boreal winter [December-January-February-March (DJFM)] and with spatial correlations calculated for the central TNA core site (VM20-234, indicated by the star). The circle shows the site of the African margin flux record shown in Fig. 2 (OCE437-7 GC68). Dust AOD data are from the 558-nm nonspherical AOD retrieval averaged over May to September between 2004 and 2008 from the Multiangle Imaging Spectroradiometer (MISR) (76).
Ross H. Williams et al. Sci Adv 2016;2:e
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