دورية أكاديمية
Measurement-based modeling of bromine chemistry in the Dead Sea boundary layer – Part 2: The influence of NO2 on bromine chemistry at mid-latitude areas
| العنوان: | Measurement-based modeling of bromine chemistry in the Dead Sea boundary layer – Part 2: The influence of NO2 on bromine chemistry at mid-latitude areas |
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| المؤلفون: | A. P. Biazar, M. Luria, V. Matveev, D. U. Pedersen, M. Peleg, E. Tas |
| المصدر: | Atmospheric Chemistry and Physics, Vol 8, Iss 16, Pp 4811-4821 (2008) |
| بيانات النشر: | Copernicus Publications, 2008. |
| سنة النشر: | 2008 |
| المجموعة: | LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | Understanding the interaction between anthropogenic air pollution and Reactive Halogen Species (RHS) activity has had only limited support from direct field measurements, due to the fact that past field measurements of RHS have been mainly performed in Polar Regions. The present paper investigates the interaction between NO2 and Reactive Bromine Species (RBS) activity by model simulations based on extensive field measurements performed in the Dead Sea area, as described in a companion paper (Tas et al., 2006). The Dead Sea is an excellent natural laboratory for this investigation since elevated mixing ratios of BrO (up to more than 150 pptv) are frequently observed, while the average levels of NO2 are around several ppb. The results of the present study show that under the chemical mechanisms that occur at the Dead Sea, higher levels of NO2 lead to higher daily average mixing ratios of BrOx. This is the result of an increase in the rate of the heterogeneous decomposition of BrONO2, which in turn causes an increase in the rate of the "Bromine Explosion" mechanism. However, above a certain threshold level of NO2 (daily average mixing ratios of 0.2 ppbv during RBS activity), the daily average mixing ratios of BrOx decrease for a further increase in the NO2 mixing ratios. This investigation shows that the influence of NO2 on BrOx production clearly reflects an enhancement of RBS activity caused by anthropogenic activity. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1680-7316 1680-7324 |
| Relation: | http://www.atmos-chem-phys.net/8/4811/2008/acp-8-4811-2008.pdf; https://doaj.org/toc/1680-7316; https://doaj.org/toc/1680-7324 |
| URL الوصول: | https://doaj.org/article/cc46a6d7458d435e87a1228865d8e5c8 |
| رقم الأكسشن: | edsdoj.46a6d7458d435e87a1228865d8e5c8 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16807316 16807324 |
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