Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region

被引：21

作者：

Zhang, Rui ^{[2
]}

Sarwar, Golam ^{[1
]}

Fung, Jimmy C. H. ^{[2
,3
]}

Lau, Alexis K. H. ^{[3
]}

Zhang, Yuanhang ^{[4
]}

机构：

[1] US EPA, Atmospher Modeling & Anal Div, Natl Exposure Res Lab, Off Res & Dev, Res Triangle Pk, NC 27711 USA

[2] Hong Kong Univ Sci & Technol, Dept Math, Kowloon, Hong Kong, Peoples R China

[3] Hong Kong Univ Sci & Technol, Div Environm, Kowloon, Hong Kong, Peoples R China

[4] Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China

来源：

ADVANCES IN METEOROLOGY | 2012年 / 2012卷

关键词：

ATMOSPHERIC BOUNDARY-LAYER; AIR-QUALITY; HETEROGENEOUS HYDROLYSIS; EMISSION INVENTORY; OH FORMATION; HONO SOURCES; HUMIC-ACID; MODEL; NO2; DIOXIDE;

D O I：

10.1155/2012/140932

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The impact of nitrous acid (HONO) chemistry on regional ozone and particulate matter in Pearl River Delta region was investigated using the community multiscale air quality (CMAQ) modeling system and the CB05 mechanism. Model simulations were conducted for a ten-day period in October 2004. Compared with available observed data, the model performance for NOx, SO2, PM10, and sulfate is reasonably good; however, predictions of HONO are an order of magnitude lower than observed data. The CB05 mechanism contains several homogenous reactions related to HONO. To improve the model performance for HONO, direct emissions, two heterogeneous reactions, and two surface photolysis reactions were incorporated into the model. The inclusion of the additional formation pathways significantly improved simulated HONO compared with observed data. The addition of HONO sources enhances daily maximum 8-hour ozone by up to 6 ppbV (8%) and daily mean PM2.5 by up to 17 ug/m(3) (12%). They also affected ozone control strategy in Pearl River Delta region.

引用

页数：18

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