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Evidence for a short tropospheric residence time for carbon disulfide
Author(s) -
Bandy Alan R.,
Maroulis Peter J.,
Shalaby Lamaat,
Wilner Lane A.
Publication year - 1981
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl008i011p01180
Subject(s) - troposphere , atmospheric sciences , residence time (fluid dynamics) , environmental science , altitude (triangle) , climatology , mixing ratio , geology , geotechnical engineering , geometry , mathematics
Our recent measurements of the concentrations of CS 2 in the background troposphere suggest that the atmospheric residence time of this substance is short, probably on the order of ten days. This conclusion is based on the very low CS 2 concentrations found in the free troposphere (<3 pptv) and the relatively large concentrations (30 pptv) found in the boundary layer. Such a rapid decrease in concentration with altitude can be explained in a straightforward way only if the residence time of CS 2 is less than the characteristic vertical mixing time of the troposphere, which is of the order of ten days.