Zeller, Mme Lilou (2023) Characterisation of the secondary ozone layer’s reaction to energetic particle precipitations PRE - Research Project, ?? - ??.
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Abstract
The secondary ozone layer designates a global peak in ozone mixing ratio at high altitude (around 95 km high). Energetic particle coming from the sun are precipitated in the atmosphere by earth geomagnetic field during so called energetic particle precipitations and interact with the other components of the atmosphere at this altitude. Because no direct chemical interaction is expected between the energetic particle precipitation and the ozone layer, the effect of geomagnetic processes on the secondary ozone layer has so far received little attention. This work presents the analysis of data from the SABER instrument on board of the TIMED satellite and from the MLS instrument on board of the Aura satellite. This analysis is completed by simulation with the empirical model MSIS. The zonal mean profiles of ozone, atomic oxygen, hydrogen and temperature are analysed to show that the auroral heating induced by these precipitations results in a depletion of ozone of several ppmv units in the polar region. Meanwhile, an enhancement of atomic oxygen and hydrogen in the equatorial region leads to a slight increase in ozone at low latitude.
Item Type: | Thesis (PRE - Research Project) |
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Uncontrolled Keywords: | physique atmosphérique |
Subjects: | Earth Sciences and Environmental Engineering |
ID Code: | 9702 |
Deposited By: | Lilou ZELLER |
Deposited On: | 31 août 2023 14:42 |
Dernière modification: | 01 sept. 2023 11:10 |
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