The quest of consistent spectroscopic data for atmospheric ozone - an update from experiments and theory
Abstract
Ozone spectroscopic data such as absorption cross sections in the visible and UV spectral ranges or line parameters in the IR and MW domains are at the heart of in-situ and remote sensing of atmospheric ozone. However, the fragility of the ozone molecule makes experimental determination of absolute values difficult and desired uncertainties better than 1 % are reached only in exceptional cases. In this paper, we compare new ab-initio calculations in the MW and 5 and 10 µm regions, new absolute and laser based experimental data in the UV and Visible as well as new IR measurements in the 5 and 10 µm spectral regions that are traceable to the UV, with current data base values and recommendations. The new data shows agreement within the 1 % uncertainty limit, but indicates that current recommendations suffer from systematic biases in both, the UV and IR spectral regions, that exceed 1 %.
- Publication:
-
EGU General Assembly Conference Abstracts
- Pub Date:
- April 2019
- Bibcode:
- 2019EGUGA..2114270J