Circulation of cosmogenic 22Na using the global monitoring network of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO). (July 2018)

• Record Type: Journal Article
• Authors: Hoffman, I.; Lewis, B.; Chan, P.
• Is Part Of: Journal of environmental radioactivity. Volume 187(2018)
• Page Start: 8
• Page End: 15
• Publication Date: 2018-07
• Subjects: Cosmogenic radionuclides -- Spectroscopy -- Environmental radioactivity -- Environmental tracers -- Stratosphere-troposphere exchange; Radioactivity -- Periodicals; Radiation, Background -- Periodicals; Radioecology -- Periodicals; Radioactive pollution -- Periodicals; Environmental Pollutants -- Periodicals; Radioactive Pollutants -- Periodicals; Radioactivity -- Periodicals; Radioécologie -- Périodiques; Pollution radioactive -- Périodiques; Fond de rayonnement -- Périodiques; 539.752
• DOI: 10.1016/j.jenvrad.2018.01.022
• Languages: English
• ISSNs: 0265-931X

Abstract

Abstract: Using a recently published global data set of 22 Na and 7 Be from the global monitoring network of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), atmospheric circulation and stratosphere-troposphere interactions are examined. Cosmogenic 22 Na has a half-life well-suited to environmental processes with durations from several months to a decade. Combined with corresponding 7 Be observations, these two cosmogenic isotopes form a useful environmental tracer and new radiochronometer to study physical interactions of air masses in the stratosphere and troposphere. Highlights: A database of concentrations of 22 Na and 7 Be was used to study global circulation. A semi-empirical production model and a simple box model were employed. Global atmospheric concentrations of 22 Na were found to behave similarly to 7 Be.