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Variations in ozone depletion potentials of very short‐lived substances with season and emission region
Author(s) -
Brioude J.,
Portmann R. W.,
Daniel J. S.,
Cooper O. R.,
Frost G. J.,
Rosenlof K. H.,
Granier C.,
Ravishankara A. R.,
Montzka S. A.,
Stohl A.
Publication year - 2010
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 - 10.1029/2010gl044856
Subject(s) - stratosphere , ozone depletion , environmental science , atmospheric sciences , climatology , ozone layer , lagrangian , ozone , latitude , boundary layer , troposphere , convection , meteorology , geology , geography , physics , geodesy , mathematical physics , thermodynamics
We present a new approach for calculating the fraction of very‐short lived substances (VSLS) emitted at the surface (and their degradation products) that reach the stratosphere ( β ) using the FLEXPART Lagrangian model. The values of β play a key role in determining the efficiency of these compounds for depleting stratospheric ozone, and are used to estimate ozone depletion potentials (ODPs) of several short‐lived compounds. Calculated β and ODPs of VSLSs show large regional and seasonal variability owing to the importance of convective transport. For instance, β and ODPs associated with emissions from the Indian subcontinent is an order of magnitude larger than that from Europe, mid‐latitude North America, or East Asia. The seasonal cycle of β is mainly driven by transport efficiency from the boundary layer into the tropical stratosphere; β has a minimum in winter and a maximum in summer.