Articles | Volume 18, issue 2
https://doi.org/10.5194/acp-18-601-2018
https://doi.org/10.5194/acp-18-601-2018
Research article
 | 
19 Jan 2018
Research article |  | 19 Jan 2018

A refined method for calculating equivalent effective stratospheric chlorine

Andreas Engel, Harald Bönisch, Jennifer Ostermöller, Martyn P. Chipperfield, Sandip Dhomse, and Patrick Jöckel

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Cited articles

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Chipperfield, M., Qing, L., (lead authors), L., Abraham, L., Bekki, S., Braesicke, P., Dhome, S., Di Genova, G., Fleming, E. L., Hardiman, S., Iachetti, D., Jackman, C. H., Kinnison, D. E., Marchand, M., Pitari, G., Rozanov, E., Stenke, A., and Tummon, F.: Model Estaimtes of Lifetimes, in: SPARC Report No. 6 Lifetimes of Stratospheric Ozone-Depleting Substances, Their Replacements, and Related Species; edited by: Ko, M. K. W., Newman, P. A., Reimann, S., and Strahan, S. E., 2013.
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Short summary
We present a new method to derive equivalent effective stratospheric chlorine (EESC), which is based on an improved formulation of the propagation of trends of species with chemical loss from the troposphere to the stratosphere. EESC calculated with the new method shows much better agreement with model-derived ESC. Based on this new formulation, we expect the halogen impact on midlatitude stratospheric ozone to return to 1980 values about 10 years later, then using the current formulation.
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