Fractional release factors of long-lived halogenated organic compounds in the tropical stratosphere
Author:
Laube J. C.,Engel A.,Bönisch H.,Möbius T.,Sturges W. T.,Braß M.,Röckmann T.
Abstract
Abstract. Fractional release factors (FRFs) of organic trace gases are time-independent quantities that influence the calculation of Global Warming Potentials and Ozone Depletion Potentials. We present the first set of vertically resolved FRFs for 15 long-lived halocarbons in the tropical stratosphere up to 34 km altitude. They were calculated from measurements on air samples collected on board balloons and a high altitude aircraft. We compare the derived dependencies of FRFs on the mean stratospheric transit times (the so-called mean ages of air) with similarly derived FRFs originating from measurements at higher latitudes and find significant differences. Moreover a comparison with averaged FRFs currently used by the World Meteorological Organisation revealed the latter to be imprecise measures due to their observed vertical and latitudinal variability. The presented data set could thus be used to improve future ozone level and climate projections.
Publisher
Copernicus GmbH
Reference38 articles.
1. Allen, N. D. C., Bernath, P. F., Boone, C. D., Chipperfield, M. P., Fu, D., Manney, G. L., Toon, G. C., and Weisenstein, D. K.: Global carbon tetrachloride distributions obtained from the Atmospheric Chemistry Experiment (ACE), Atmos. Chem. Phys. Discuss., 9, 13299–13325, 2009. 2. Avallone, L. M. and Prather, M. J.: Tracer-tracer correlations: Three-dimensional model simulations and comparisons to observations, J. Geophys. Res., 102, 19233–19246, 1997. 3. Boering, K. A., Daube Jr., B. C., Wofsy, S. C., Loewenstein, M., Podolske, J. R., and Keim, E. R.: Tracer-tracer relationships and lower stratospheric dynamics: CO2 and N2O correlations during SPADE, Geophys. Res. Lett., 21, 2567–2570, 1994. 4. Brasseur, G. and Solomon, S.: Aeronomy of the Middle Atmosphere, 2nd edition, Kluwer Academic Publishers Group, Dordrecht, Holland, 1986. 5. Clerbaux, C., Cunnold, D. M., Anderson, J., et al.: Halogenated Long-lived Compounds, Scientific assessment of ozone depletion: 2006, Global Ozone Research and Monitoring Project – Report No. 50, Chapter 1, World Meteorological Organization, Geneva, 2007.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|