Temporal and spatial variations of the Venus 1.27-μm O2 airglow observed from ground
Abstract
Imaging spectroscopic observations of the Venus 1.27-μm O2 airglow were carried out with groundbased telescopes from 2002 to 2010. Spatially resolved spectra were taken on the Venus nightside disk. The airglow intensity and rotational temperature maps are derived. The temperature shows weak positive correlation with the airglow intensity. However, there are some regions that have almost same intensities but different temperatures. The intensities tend to decrease from the anti-solar point to the terminator besides local features. These results indicate that there are local strong downward flows superimposed on the subsolar-to-antisolar circulation. Monitoring observations detected changes in these airglow distributions.
- Publication:
-
EPSC-DPS Joint Meeting 2011
- Pub Date:
- October 2011
- Bibcode:
- 2011epsc.conf..968O