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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:24 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Complex model to estimate vertical profiles of atmospheric radon
Authors:
Mihaela Carina Raportaru (1), Vasile Cuculeanu (2), Alexandru Lupu(3)
Affiliation:
(1)Institutul National de Fizica si Inginerie Nucleara "Horia Hulubei"-Magurele (2)University of Bucharest, Faculty of Physics, P.O.MG-11, Bucharest, Romania
(3)York University, Toronto, Canada
E-mail
mraportaru@nipne.ro
Keywords:
Radon;Aerosol; Dry deposition; washout; turbulent transport
Abstract:
The model solves numerically the equations for turbulence diffusion of radon isotopes and their progeny,using a finite difference scheme centered in space and back in time, after the introduction of a dimensionless logarithmic scale for the vertical coordinate. The model estimates the vertical distributions of 222Rn, 220Rn and their descendants, activity reports descendant-parent, unattached fraction and the equilibrium factor in lower atmosphere. The model takes into account the radioactive decay, the attachment of aerosol particles, the recoil, dry deposition, rainout and washout processes.
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