Dynamical contribution to formation of an ozone mini hole in the Northern Hemisphere in mid-winter
Ozone mini holes are localized and transient (several days) column ozone amount depletion phenomena which often appear over northern Europe. In early February 1989, the extremely low ozone value of 172 DU was observed by Total Ozone Mapping Spectrometer observation. Quantitative analyses of this eve...
| Main Authors: | , |
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| Format: | Report |
| Language: | English |
| Published: |
Department of Earth and Planetary Sciences, Kyushu University/Department of Earth and Planetary Sciences, Kyushu University
2002
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| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2949 http://id.nii.ac.jp/1291/00002949/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2949&item_no=1&attribute_id=18&file_no=1 |
| Summary: | Ozone mini holes are localized and transient (several days) column ozone amount depletion phenomena which often appear over northern Europe. In early February 1989, the extremely low ozone value of 172 DU was observed by Total Ozone Mapping Spectrometer observation. Quantitative analyses of this event using a forward and backward trajectory method show that the total ozone depletion is by uplift of air throughout the lower stratosphere, whereas the effect of horizontal advection of ozone-poor air from lower latitudes is relatively small. Similar results are obtained for 4 other severe mini hole cases. However, these two dynamical effects cannot fully explain the total ozone depletion, which implies the existence of other possible processes responsible for ozone mini holes. |
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