Scavenging and fractionation of particle-reactive radioisotopes 7Be, 210Pb and 210Po in the atmosphere

Analysis of the influence of solar activity and atmospheric factors on 7Be air concentration by seasonal-trend decomposition

“…The correlation observed with the precipitations is supported by recent studies, which found a strong correlation between precipitations and 7 Be deposition fluxes (Chen et al, 2016;Zhang et al, 2016). In constrast, many studies have found a non-significant correlation between 7 Be row data and the total monthly precipitation per month (Azahra et al, 2004b;Ali et al, 2011;Pham et al, 2011;Kotsopoulou and Ioannidou, 2012).…”

Aerosol Populations, Processes, and Ages in Bulk Deposition: Insights From a 9‐Year Study of 7Be, 210Pb, Sulfate, and Major/Trace Elements

“…Even when normalized for p D , fluxes of 7 Be, 210 Pb, and S, and all other FRNs/MTEs were enriched in E events relative to those in both N and D events [ p < 0.05; Table 3]. Co‐enrichment of 7 Be, 210 Pb, and terrestrial aerosols is consistent with strong convection, lateral entrainment, and vertical mixing between ascending boundary layer and descending upper atmospheric air contributing to large aerosol fluxes, irrespective of aerosol production altitude (Chen et al., 2016; Du et al., 2015; McNeary & Baskaran, 2003; Su et al., 2003).…”

“…More telling, however, are observations that 7 Be: 210 Pb atmospheric flux ratios increase systematically with increasing precipitation (Caillet et al., 2001; Chen et al., 2016; Gourdin et al., 2014). This indicates that, despite their similar size distributions in PM2.5, 7 Be and 210 Pb are deposited by different mechanisms (Caillet et al., 2001; Laguionie et al., 2014).…”

“…This indicates that, despite their similar size distributions in PM2.5, 7 Be and 210 Pb are deposited by different mechanisms (Caillet et al., 2001; Laguionie et al., 2014). This difference has been attributed variously to different altitudes of the 7 Be and 210 Pb production sources (Caillet et al., 2001; Huh et al., 2006) or to different scavenging behaviors of 7 Be and 210 Pb themselves (Chen et al., 2016). The relevant processes in either case are poorly understood (Seinfeld & Pandis, 2016; Sportisse, 2007).…”

“…Data sources include:Akata et al (2008),Alonso-Hernández et al (2014),Appleby et al (2002),Appleby et al (2003),Baskaran et al (1993),Baskaran (1995),Baskaran and Swarzenski (2007),Benitez-Nelson and Buesseler (1999),Caillet et al (2001),Chen et al (2016),Cho et al (2011),Clifton et al (1995),Dominik et al (1987),Du et al (2015),Dueñas et al (2017),Hirose et al (2004),Hu et al (2020),Huh et al (2006),Jia et al (2003), S. H Kim et al (1998),. G Kim et al (1999),.…”