Open AccessMean tropospheric residence time of cosmic‐ray‐produced beryllium 7 at north temperate latitudes
Author(s) -
Bleichrodt J. F.
Publication year - 1978
Publication title -
journal of geophysical research: oceans
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/jc083ic06p03058
Subject(s) - troposphere , latitude , atmospheric sciences , environmental science , temperate climate , residence time (fluid dynamics) , climatology , cosmic ray , meteorology , geology , physics , nuclear physics , geodesy , botany , geotechnical engineering , biology
By means of published data on the concentration of 7 Be in the troposphere between 30° and 75°N, together with concentrations measured over the Netherlands, the tropospheric content of 7 Be has been estimated. Comparison of this value with published rates of deposition of 7 Be in the same latitude band shows that the mean tropospheric residence time of this nuclide is probably not less than 22 days and is more likely of the order of 35 days. This is in agreement with previous estimates and not in agreement with the value of 1 week or less proposed recently by Martell and Moore.
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