Influence of the Background Nitrogen Oxides on the Tropospheric Ozone Depletion Events in the Arctic during Springtime
Influence of the Background Nitrogen Oxides on the Tropospheric Ozone Depletion Events in the Arctic during Springtime
复制标题
背景氮氧化物对春季北极对流层臭氧消耗事件的影响
DOI：
10.3390/atmos11040344
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发表时间：
2020-03
期刊：
影响因子：
2.9
通讯作者：
Li Simeng
中科院分区：
文献类型：
--
作者：
Zhou Jiashu;Cao Le;Li Simeng
自 20 世纪 80 年代初以来，北极春季的臭氧消耗事件 (ODE) 经常被观测到，但 ODE 期间的臭氧混合比与氮氧化物 (NOx) 浓度之间的相关性仍不清楚。在本研究中，通过使用盒模型研究了 ODE 中 NOx 背景水平的作用，该模型实现了包含 49 种化学物质和 141 个相关反应的化学反应机制。还应用浓度敏感性分析来发现 ODE 期间臭氧混合比对初始空气成分的每种成分的依赖性。模拟结果表明，NOx背景水平存在一个临界值，臭氧消耗率与NOx初始浓度无关，本研究发现该临界值约为55 ppt（ppt =万亿分之一，10−12 mol/mol）。浓度敏感性分析还表明，NOx 的存在对臭氧消耗具有双向影响，具体取决于 NOx 的初始量。由于 NOx 背景水平较低（低于 55 ppt），初始 NOx 的增加会加速臭氧消耗。相反，如果初始 NOx 水平较高（超过 55 ppt），NOx 会延迟 ODE 期间臭氧的消耗。
Ozone depletion events (ODEs) in the springtime of the Arctic have been frequently observed since the early 1980s, and the correlation between the ozone mixing ratio during the ODEs and the nitrogen oxides (NOx) concentration is still unclear. In the present study, the role of the background level of NOx in ODEs was investigated by using a box model implementing a chemical reaction mechanism containing 49 chemical species and 141 related reactions. A concentration sensitivity analysis was also applied to discover the dependence of the ozone mixing ratio during the ODEs on each constituent of the initial air composition. The simulation results showed that a critical value of the NOx background level exists, with which the ozone depletion rate is independent of the initial concentration of NOx, and the critical value was found to be approximately 55 ppt (ppt = part per trillion, 10−12 mol/mol) in the present study. The concentration sensitivity analysis also showed that the existence of NOx has a two-sided impact on the depletion of ozone, depending on the initial amount of NOx. With a low background level of NOx (less than 55 ppt), the increase of the initial NOx can advance the ozone depletion. On the contrary, with a high initial NOx level (more than 55 ppt), NOx would delay the consumption of ozone during the ODEs.
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影响因子：
6.3
作者：
E. Tas;M. Peleg;Daniel U. Pedersen;V. Matveev;A. Biazar;M. Luria
通讯作者：
E. Tas;M. Peleg;Daniel U. Pedersen;V. Matveev;A. Biazar;M. Luria
影响因子：
6.3
作者：
O. Möhler;H. Bunz;O. Stetzer
通讯作者：
O. Möhler;H. Bunz;O. Stetzer
影响因子：
4.3
作者：
Beare, RJ;MacVean, MK;Sullivan, P
通讯作者：
Sullivan, P
DOI：
--
发表时间：
--
期刊：
--
影响因子：
--
作者：
J. Bottenheim;S. Netcheva;S. Morin;S. Nghiem
通讯作者：
J. Bottenheim;S. Netcheva;S. Morin;S. Nghiem
影响因子：
4.3
作者：
D. L. Baulch;R. A. Cox;R. F. Hampson;J. Kerr;Jürgen Troe;R. T. Watson
通讯作者：
D. L. Baulch;R. A. Cox;R. F. Hampson;J. Kerr;Jürgen Troe;R. T. Watson