 |
| Titel |
Recent CO2 results obtained by the SOIR instrument on board Venus Express: Terminators dynamic investigation |
| VerfasserIn |
Arnaud Mahieux, Séverine Robert, Valerie Wilquet, Rachel Drummond, Ann Carine Vandaele, Anna Fedorova, Jean-Loup Bertaux |
| Konferenz |
EGU General Assembly 2011
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250054551
|
|
|
|
|
|
| Zusammenfassung |
| The SOIR instrument performs solar occultation measurements in the IR region (2.2 - 4.3
μm) at a resolution of 0.12 cm-1, the highest on board Venus Express. It combines an
echelle spectrometer and an AOTF (Acousto-Optical Tunable Filter) for the order
selection.
The wavelength range probed by SOIR allows a detailed chemical inventory of the Venus
atmosphere at the terminators in the upper mesosphere and lower thermosphere (80 to
180Â km) with an emphasis on vertical distribution of the gases. In particular, measurements
of CO2 density and rotational temperature vertical profiles have been routinely performed.
Discrepancies with the hydrostatic equilibrium allowed to derive information concerning the
dynamical behavior of the atmosphere at the terminators. The approach as well as some
results will be described. |
|
|
|
|
|
|