氧同位素示踪夏季北冰洋（62.3°~74.7° N）大气硝酸盐形成途径的研究

贺鹏真,谢周清

Using oxygen isotopes to trace the formation pathways of atmospheric nitrate over summer Arctic Ocean （62.3°~74.7° N）

Pengzhen HE,Zhouqing XIE

图1 全球尺度上大气硝酸盐形成途径简图（括号中数字为NO到NO2以及NO2到HNO3过程中各反应途径的全球年均贡献百分比［7］。X代表元素Br、Cl和I，HC和DMS代表碳氢化合物和二甲基硫，MTN和ISOP分别代表单萜和异戊二烯。灰色阴影区域代表只发生在夜间硝酸盐的形成途径，黄色阴影区域代表只发生在白天的硝酸盐的形成途径）

Fig.1 The diagram of nitrate formation pathways in global scale （Numbers in the brackets show the global annual-mean contribution to NO2 and nitrate formation from model［7］. X represents Cl， Br and I， HC and DMS represents hydrocarbons and dimethyl sulfide， respectively. MTN and ISOP represents monoterpenes and isoprene， respectively. The grey and yellow areas represent nitrate formation pathways that only significant in nighttime and in daytime， respectively）