Total OH reactivity measurement in a BVOC dominated temperate forest during a summer campaign, 2014
Total OH reactivity measurement in a BVOC dominated temperate forest during a summer campaign, 2014
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DOI：
10.1016/j.atmosenv.2016.01.039
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发表时间：
2016-04
影响因子：
5
通讯作者：
Sathiyamurthi Ramasamy;A. Ida;C. Jones;Shungo Kato;H. Tsurumaru;Iori Kishimoto;Shio Kawasaki;Y. Sadanaga;Yoshihiro Nakashima;T. Nakayama;Y. Matsumi;M. Mochida;Sara Kagami;Yange Deng;Shuhei Ogawa;K. Kawana;Y. Kajii
中科院分区：
文献类型：
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作者：
Sathiyamurthi Ramasamy;A. Ida;C. Jones;Shungo Kato;H. Tsurumaru;Iori Kishimoto;Shio Kawasaki;Y. Sadanaga;Yoshihiro Nakashima;T. Nakayama;Y. Matsumi;M. Mochida;Sara Kagami;Yange Deng;Shuhei Ogawa;K. Kawana;Y. Kajii
2014年夏季，在位于日本和歌山县的针叶林中进行总OH反应性测量。使用激光诱导泵浦和探测技术测量的平均总OH反应性为7.1 s-1。测得的OH反应性与其他针叶林和温带森林的测量和远低于热带森林。OH反应性的日变化与温度（r2= 0.66）和光照（r2= 0.53）呈中度线性相关。单萜排放树种为柳杉和华山松。尽管来自海洋的清洁空气占主导地位，但该活动的开始受到人为污染物输送的影响，因此确定了较高的平均OH反应性（9.8 s-1）和37.3%的高缺失汇。清洁的条件，沿着，以及在活动的后半部分期间较冷的白天温度，导致平均OH反应性较低，为6.0 s-1，缺失的OH反应性较低，为21.5%。单萜、异戊二烯和乙醛是总OH反应性的主要贡献者，分别占23.7%、17.0%和14.5%。
A total OH reactivity measurement was conducted in coniferous forest located in Wakayama prefecture, Japan, during the summer of 2014. The average total OH reactivity, measured using a laser-induced pump and probe technique was 7.1 s−1. The measured OH reactivity was comparable with other coniferous and temperate forest measurements and much lower than that of tropical forests. OH reactivity varied diurnally and showed moderate linear correlation with temperature (r2= 0.66) and light (r2= 0.53). Monoterpene emitters,Cryptomeria japonicaandChamaecyparisobutsa, are the dominant tree species in this forest. Although clean air from the sea was predominant, the beginning of the campaign was influenced by transported anthropogenic pollutants and consequently a higher average OH reactivity of 9.8 s−1with high missing sinks of 37.3% was determined. Cleaner conditions, along with cooler day-time temperatures during in the second half of the campaign resulted in a lower average OH reactivity of 6.0 s−1with a lower missing OH reactivity of 21.5%. Monoterpenes, isoprene, acetaldehyde were the dominant contributors to the total OH reactivity, accounting for 23.7%, 17.0% and 14.5%, respectively.