在中度地区对热层氧化的DOAS测量
Hebestreit1, Stutz, Rosen
1K. Hebestreit, J. Stutz, U. Platt, Institut fur Umweltphysik, Ruprecht-Karls-Universitat Heidelberg, Im Neuenheimer Feld 366, D-69120 Heidelberg, Germany. D. Rosen, V. Matveiv, M. Peleg, M. Luria, Environmental Science, School of Applie.
概括
首次在中度地区观察到高氧化物 (BrO),特别是在死海. 这些高的BrO含量与较低的臭氧相关,这表明新地区的臭氧层可能受到损耗.
科学领域:
- 大气中的化学成分
- 环境科学环境科学
- 地质化学 地质化学
背景情况:
- 众所周知,氧化物 (BrO) 事件导致北极边界层的臭氧破坏.
- 在较低度地区以前没有观察到这样的事件.
研究的目的:
- 调查氧化物 (BrO) 在中度地区的发生情况.
- 了解 BrO 和臭氧度在较低度的边界层中的关系.
主要方法:
- 使用差分光学吸收光谱法 (DOAS) 来测量BrO度.
- 测量是在1997年春天在以色列死海进行的.
主要成果:
- 在中度地区观察到局部高度的氧化物 (BrO).
- 每天的混合比率在中午附近达到80个每万亿的峰值.
- 高水平的BrO与较低的边界层臭氧混合比率相关.
结论:
- 这项研究首次对中度地区的氧化物 (BrO) 事件进行了观察.
- 这些发现表明,BrO的催化臭氧破坏可能发生在比以前认为的更低的度.
- 需要进一步的研究来评估这些中度BrO事件对大气化学的更广泛影响.
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