Features of ozone mini-hole events over the Tibetan Plateau |
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| Authors: | Jianchun Bian |
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| Institution: | Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO),
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | Based on TOMS total ozone data and SCIAMACHY ozone profile data,
climatology of the ozone mini-hole events over the Tibetan Plateau and ozone
vertical structure variations during an ozone mini-hole event in December 2003
are analyzed. The analyses show that before 1990 ozone mini-hole events only
occurred in November--December of 1987 but that the number of events increases
after 1990. These events only occur from October through February, with maximum
occurrence frequency in December. During the event in December 2003, the
decrease in total ozone of over 20\% is mainly caused by the ozone loss in the
upper troposphere and lower stratosphere region due to the horizontal transport
of low ozone from the lower latitude subtropics and the uplift of low ozone
from the lower troposphere over the Tibetan Plateau. |
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| Keywords: | ozone mini-hole Tibetan Plateau subtropical jet upper troposphere and lower stratosphere |
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