“…The relative importance of the four physical processes depends largely on soil texture and composition: soil aggregate breakage is likely most important for soils with a large fraction of fine (clay-and silt-sized) grains (Shao, 2008;Kok et al, 2012;Swet and Katra, 2016), whereas removal of mineral coatings and aeolian abrasion might be more important for sandy soils (Kuenen, 1960;Bullard et al, 2004Bullard et al, , 2007Jerolmack et al, 2011;Crouvi et al, 2012). Many dust models use preferential source functions to identify emissions in regions with a large content of fine grains held in soil aggregates, which are implicitly used as a proxy for dust emissions through aggregate fragmentation (Ginoux et al, 2001;Tegen et al, 2002;Zender et al, 2003). As a consequence, dust models weigh emissions heavily towards non-sandy soils, and sandy soils are not treated as important dust sources in most current models (Shao et al, 1993;Ginoux et al, 2001;Tegen et al, 2002;Zender et al, 2003;Ito and Kok, 2017).…”