The importance of NO2 and volatile organic compounds in the urban air from the viewpoint of the OH reactivity
The importance of NO2 and volatile organic compounds in the urban air from the viewpoint of the OH reactivity
复制标题
DOI：
10.1029/2004gl019661
复制
发表时间：
2004-04
影响因子：
5.2
通讯作者：
Y. Sadanaga;Ayako Yoshino;Shungo Kato;Atsushi Yoshioka;K. Watanabe;Yuko Miyakawa;I. Hayashi;M. Ichikawa;Jun Matsumoto;Ayaka Nishiyama;N. Akiyama;Y. Kanaya;Y. Kajii
中科院分区：
文献类型：
--
作者：
Y. Sadanaga;Ayako Yoshino;Shungo Kato;Atsushi Yoshioka;K. Watanabe;Yuko Miyakawa;I. Hayashi;M. Ichikawa;Jun Matsumoto;Ayaka Nishiyama;N. Akiyama;Y. Kanaya;Y. Kajii
2003年7月和8月，利用激光诱导的泵浦和探测技术，在东京郊区测量了总的羟基反应性。超过90%的羟基损失率的测量数据高于同时测量各种痕量物种浓度的计算值。实测值与计算值的最大偏差为34.3%。然而，当使用IUPAC 1997推荐的OH+NO2反应的速率系数时，这一差异减少到24.6%，比最近的推荐值(JPL 2002)大40%。我们的结论是，这种不一致是由于OH+NO2速率系数的不确定性以及未测量的VOCs的存在。VOCs对OH损失过程的贡献在数量上是重要的。
Total OH reactivity was measured in the suburban area, Tokyo, in July and August 2003, by use of a laser‐induced pump and probe technique. More than 90% of the measured data of the OH loss rates were higher than the calculated values with simultaneously measured concentrations of various trace species. The maximum difference between the measured and calculated values is 34.3%. However, this difference was reduced to be 24.6% when using the rate coefficient of the OH + NO2 reaction recommended by IUPAC 1997, which is 40% larger than the most recently recommended value (JPL 2002). We concluded that this disagreement is due to the uncertainty of the OH + NO2 rate coefficient as well as existence of unmeasured VOCs. VOCs were quantitatively important as contribution to the OH loss processes.