Interactions of Halogen Oxides and Ozone - News From The Dead Sea
Abstract
Earlier pilot measurements at the Dead Sea (Israel) in 1997 showed unexpectedly high mixing ratios of BrO up to 170 ppt. This was the first time that the influence of halogen oxides on the tropospheric chemistry was verified outside polar regions. A dependence between halogen oxides and ozone was detected but the complex interaction system could not be clearly answered. It became clear that more precise and extensive mea- surements were necessary in order to understand the chemical processes in detail.
Here we present results of a field campaign performed in summer 2001 at two sites at the Dead Sea. By using the DOAS (Differential Optical Absorption Spectroscopy) technique, the qualitative and quantitative occurrance of ClO, BrO and IO was inves- tigated at high time resolution. Furthermore, measurements of meteorology, aerosol concentration and solar radiation were done. Among other questions, the existence of a nighttime BrO background will be dis- cussed. Transport phenomena will be a matter of interest as well as their coaction with chemical reactions.- Publication:
-
EGS General Assembly Conference Abstracts
- Pub Date:
- 2002
- Bibcode:
- 2002EGSGA..27..446Z