Provenance tracing of long-range transported dust over the Northeastern Arabian Sea during the southwest monsoon

Aeolian Dust and Sea Salt in Marine Aerosols over the Arabian Sea during the Southwest Monsoon: Sources and Spatial Variability

“…However, recently, Suresh et al reported a relatively uniform and enriched Fe/Al ratio (0.78) for the dust collected from rainwater samples during SWM months over the northeastern Arabian Sea, which is comparable to our values. Based on the geochemical proxies (clay mineralogy and radiogenic isotopic composition), Suresh et al , identified the Arabian Peninsula and NE Africa as major sources during SWM months, particularly during August. Our varying Fe concentrations during this study period indicate the large heterogeneity of iron content at the major source regions, which have significant implication to the supply of this micronutrient to the surface waters of the Arabian Sea.…”

“…Based on the geochemical proxies, dust derived from the Arabian Peninsula has characteristic ε Nd values ranging from −7.8 to −6.0. Also, Suresh et al . have highlighted a relatively more radiogenic ε Nd (−2.7) value for dust sourced from northeast Africa.…”

“…36 In addition, enhanced dust storm activities have been also reported over the Middle East region, which contribute significantly in dust loading over the Arabian Sea through long-range transport. 76,77 Recently, based on isotopic composition, Suresh et al 78 found the Arabian Peninsula as a major contributor of dust loading over the Arabian Sea during SWM. The higher concentration of mineral dust in northern Arabian Sea is also evident from the higher nss-Ca 2+ and nss-Mg 2+ concentration in WSIC (Figure S3) and transect wise dust loading where NCOT experienced the maximum dust, showing a decreasing trend from COT to SCOT (Figure 5c).…”

“…A very uniform ε Nd signature is shown by all four samples with values ranging from −5 to −4. Earlier studies by Kumar et al 46 and Suresh et al 78 have discussed the isotopic signature of dust over the northeastern Arabian Sea during different seasons. Based on the geochemical proxies, dust derived from the Arabian Peninsula has characteristic ε Nd values ranging from −7.8 to −6.0.…”

Modelling of the Chemical Halo of Dust Pollution Migration in Loparite Ore Tailings Storage Facilities

“…Recently, a significant number of studies have been devoted to the pollution and distribution of rare-earth elements (REE) in water bodies [24][25][26] and soils [27][28][29][30], however, the number of studies on the concentration of REE-containing solid particles in the air is limited. Research is mainly focused on the transfer of REEs in atmospheric dust to the surface of the oceans [31,32] and the content of REEs in particulate matter in cities [33][34][35].…”