Nighttime peroxy radicals chemistry at Rishiri Island during the campaign RISFEX 2003

作     者：LIU Yan WANG JiangTao WANG ZhuQing GONG XiaoDong YANG Bing TAN LiJu QI Bin 

作者机构：Key Laboratory of Marine Chemistry Theory and TechnologyMinistry of EducationOcean University of ChinaQingdao 266100China Shandong Provincial Key Laboratory of Ocean Environment Monitoring TechnologyShandong Academy of Sciences Institute of Oceanographic InstrumentationQingdao 266001China Key Laboratory of Applied Surface and Colloid Chemistry(Shaanxi Normal University)Ministry of EducationSchool of Chemistry and Materials ScienceXi'an 710062China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2012年第55卷第11期

页      面：2450-2461页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 08[工学] 0708[理学-地球物理学] 

基　　金：supported by the Special Funds in Marine Public Service Project of State Oceanic Administration (201005025) National High-Tech Research and Development Plan (863) of China (2007AA092101) the International Scientific and Technological Cooperation Projects(2009DFB20610) 

主　　题：peroxy radicals nighttime chemistry monoterpene ozonolysis humidity correction 

摘      要：Peroxy radicals （ROx） concentrations were measured by Peroxy Radical Chemical Amplifier （PERCA） technique during the field campaign RISFEX 2003 （RiShifi Fall Experiment 2003）, which was performed in September 2003 at Rishiri island （45.07 N, 141.12 E, and 35 m asl） in the sea of Japan. The concentrations of nighttime ROx radicals had temporal variations around an average of 7.9±5.8 （1σ） pptv and showed a positive correlation with the summed mixing ratio of four monoterpene species. Model calculations suggested that local nighttime ROx radicals were dominated by the reactions of monoterpene with ozone （03） and nitrate radical （NO3）, contributing ca. 76% and 19%, respectively. The comparisons between the observed ROx and ones modeled had implied that the current model may be overestimated the yields of peroxy radicals from the reactions of monoterpenes with ozone and an important source of peroxy radicals was possibly missed. Abnormal high concentrations of observed ROx radicals were found during high relative humidity （RH） period （especially 〉 95%）, and the possible explanation was that the humidity correction of ROx radicals under high RH conditions may be inaccurate and overestimates ROx concen-