Atmospheric HT and HTO: 4. estimation of atmospheric hydrogen residence time from interhemispheric tritium gas transport
Article first published online: 20 SEP 2012
Copyright 1977 by the American Geophysical Union.
Journal of Geophysical Research
Oceans and Atmospheres
Volume 82, Issue 37, pages 5913–5916, 20 December 1977
How to Cite
1977), Atmospheric HT and HTO: 4. estimation of atmospheric hydrogen residence time from interhemispheric tritium gas transport, J. Geophys. Res., 82(37), 5913–5916, doi:10.1029/JC082i037p05913.(
- Issue published online: 20 SEP 2012
- Article first published online: 20 SEP 2012
- Manuscript Accepted: 18 MAY 1977
- Manuscript Received: 17 FEB 1977
Two sampling flights were made to determine the latitudinal distribution of tritium gas in the troposphere between California and Antarctica. These data, confirmed by shipborne and land station samples, were used to parameterize the interhemispheric air exchange and the atmospheric residence time of hydrogen gas. When tritium gas is assumed to be in steady state with its sources in the northern hemisphere and when a two-box model with a 0.6-year exchange time is used, an estimate of 6–10 years hydrogen residence time is obtained. Vertical sampling flights over the central United States show the tritium gas to be well mixed up to 14-km altitude, thus corroborating the long residence time estimate.