 |
| Titel |
Modelling vibrationally excited hydroxyl in electric discharges in the mesosphere |
| VerfasserIn |
Holger Winkler, Justus Notholt |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250106708
|
| Publikation (Nr.) |
 EGU/EGU2015-6386.pdf |
|
|
|
|
|
| Zusammenfassung |
| There is a number of model simulations on the chemical processes in mesospheric
discharges (sprites), and the corresponding emissions from excited species. However,
there are only a few investigations on the effects of sprites on vibrationally excited
hydroxyl molecules OH*. A numerical plasma chemistry model has been used to
simulate the response of OH* to an electric breakdown pulse in the mesosphere. The
model accounts for the first 9 vibrational states of OH*, chemical production and
loss processes including quenching as well as radiative de-excitation. Preliminary
results indicate that there is an increased production of OH* through reaction O3 +
H / OH* + O2 as both H and O3 increase due to the breakdown pulse. This is
counteracted by an increase of atomic oxygen which removes OH* by quenching. |
|
|
|
|
|