The 1997 Arctic Ozone depletion quantified from three-dimensional model simulations
International audience Three-dimensional simulations of total ozone are reported for the 1996-97 Arctic winter. The record low ozone values observed by satellite in late March are well reproduced by the chemistry-transport model. The comparison between the chemically integrated ozone and a passive t...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
1998
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-02896844 https://hal.archives-ouvertes.fr/hal-02896844/document https://hal.archives-ouvertes.fr/hal-02896844/file/98GL51812.pdf https://doi.org/10.1029/98GL51812 |
Summary: | International audience Three-dimensional simulations of total ozone are reported for the 1996-97 Arctic winter. The record low ozone values observed by satellite in late March are well reproduced by the chemistry-transport model. The comparison between the chemically integrated ozone and a passive tracer with identical initialization allows us to discrimate chemical changes from variations due to dynamical processes. In addition to a substantial total ozone chemical loss (60 to 120 Dobson Units), the simulation reveals an dynamically-induced reduction of ∼70 DU also responsible for the ozone minimum observed in the Arctic in late March 1997. |
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