- 期刊
- OpenAccess
Review of Comprehensive Measurements of Speciated NO_y and its Chemistry: Need for Quantifying the Role of Heterogeneous Processes of HNO_3 and HONO
摘要
To improve the credibility of chemistry schemes employed in chemical transport models (CTMs) aiming at predicting ozone mixing ratios in urban, rural, and regional scales, validation of models not only by observational data of O_3 and NO_x but also by individual species of reactive nitrogen NO_y is necessary because the formation and dissipation of O_3 in the atmosphere occur via reactions accompanying the transformation of NO_x and NO_y. The disagreement of the simulated results of CTM with observational data of HNO_3 and HONO have often been reported, and this paper reviews previous studies on the heterogeneous ＂renoxification＂ reaction of gaseous HNO_3 to form NO, NO_2, and/or HONO; the formation of HONO from the heterogeneous dark reaction of NO_2 and H_2O, and the photolysis of adsorbed HNO_3 and NO_3^- on surfaces. For the further validation of CTMs with individual species of NO_y, previous field studies of comprehensive observation of NO_y speciation in ground-based and aircraft campaigns have also been reviewed. Studies combining observations of speciated NO_y and model simulations need to be performed to improve chemistry models used in CTMs.