Long-term variations of radionuclides in the Bratislava air

Effectiveness of airborne radon progeny assessment for atmospheric studies

“…Similar results are also found at other European sites (e.g. Paatero et al, 1998;Sýkora et al, 2017;Winkler and Rosner, 2000) and in Middle East locations (e.g. Ahmed et al, 2004;Mohery et al, 2016).…”

“…As previously discussed for 214 Bi data, also 210 Pb average monthly concentrations (Table 2) show minima in springtime and maxima in wintertime, although 210 Pb is characterised by concentrations 10 4 times lower than 214 Bi ones. In Figure 4 activity concentrations of 214 Bi and 210 Pb show similar temporal patterns in the atmosphere (Pearson correlation coefficient R=0.88) as also reported in other literature studies (Kim et al, 2000;Sýkora et al, 2017). According to Kim et al (2000), such correlation is a proof-of-evidence of the steady-state assumption which is needed for the box model used to calculate aerosol residence time (see Section 3.4).…”

Observation and modeling of high-<sup>7</sup>Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003

“…Beryllium-7 ( 7 Be) is a cosmogenic radionuclide widely monitored and analyzed around the world (e.g., Tositti et al, 2004Tositti et al, , 2014Gourdin et al, 2014;Sýkora et al, 2017). Due to its relatively long radioactive half-life (53.22 d) and its cosmogenic origin in the upper troposphere and lower stratosphere (UT-LS) (Lal and Peters, 1967), 7 Be is considered a tracer for intrusion of stratospheric air into the troposphere and large-scale subsidence (e.g., Liu et al, 2016;Chae and Kim, 2019;Heikkila et al, 2008).…”

Radioactive elements in atmospheric precipitations of the Western Siberia

“…7 Be and 210 Pbatm are often used as indicators of various natural processes, including, geochronological modeling of modern sedimentation processes, study of aerosol transfer in the atmosphere, atmospheric circulation models and meteorological dynamics, etc. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] According to some estimates [30] more than 90% of 7 Be and 210 Pbatm are delivered to the Earth's surface through "wet" atmosphere precipitations. There are no reliable data about deposition of 210 Pb and 7 Be with atmospheric precipitations in such extensive region as the Western Siberia now.…”