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| Titel |
Modeling the night-time CO2 4.3 μm emissions in the mesosphere/lower thermosphere |
| VerfasserIn |
Peter Panka, Alexander Kutepov, Artem Feofilov, Ladislav Rezac, Diego Janches |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250129121
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| Publikation (Nr.) |
 EGU/EGU2016-9192.pdf |
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| Zusammenfassung |
| We present a detailed non-LTE model of the night-time CO2 4.3 μm emissions in the MLT.
The model accounts for various mechanisms of the non-thermal excitation of CO2
molecules and both for inter- and intra-molecular vibrational-vibrational (VV) and
vibrational-translational (VT) energy exchanges. In this model, we pay a specific attention to
the transfer of vibrational energy of OH(ν), produced in the chemical reaction H + O3, to the
CO2(ν3) vibrational mode.
With the help of this model, we simulated a set of non-LTE 4.3 μm MLT limb emissions
for typical atmospheric scenarios and compared the vertical profiles of integrated radiances
with the corresponding SABER/TIMED observations.
The implications, which follow from this comparison, for selecting non-LTE model
parameters (rate coefficients), as well as for the night-time CO2 density retrieval in the MLT
are discussed. |
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