基于缺失的异质 HONO 源,低估了氮氧化物控制对减少 SNA 和 O3 的益处

IF 6.1 2区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
Shuping Zhang, Haotian Zheng, Jun Liu, Yao Shi, Tianzeng Chen, Chaoyang Xue, Fenfen Zhang, Yueqi Jiang, Xiangping Zhang, Shovan Kumar Sahu, Biwu Chu, Jia Xing
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引用次数: 0

摘要

大量减少氮氧化物的排放对于协同减少中国的颗粒物和臭氧(O3)污染至关重要。传统的空气质量模型没有考虑异相 HONO 化学性质,导致氮氧化物控制效益估算的不确定性。以往的研究表明,异相 HONO 形成的参数化会增加硫酸盐-硝酸盐-铵(SNA)和臭氧(O3)的模拟值,因此在空气质量模型中加入 HONO 的异相反应不可避免地会导致氮氧化物减排效益估算的变化。在此,我们研究了在社区多尺度空气质量(CMAQ)模型中加入异相 HONO 反应前后,氮氧化物减排带来的 SNA 和 O3 浓度的变化。在模拟中加入异相 HONO 反应提高了氮氧化物减排在冬季 SNA 控制方面的效益。在氮氧化物减少 80% 的情况下,SNA 的减少率从未计及异相 HONO 反应的 36.9% 增加到含有异相 HONO 化学反应的 42.8%。加入异相 HONO 反应后,氮氧化物减排导致的夏季最大日 8 小时平均 (MDA8) O3 降低率从 4.7% 微升至 5.2%。本研究的结果凸显了在考虑复杂化学环境中异相 HONO 的形成后,氮氧化物控制对减少 SNA 和 O3 的有效性,表明了氮氧化物控制对减少中国 PM2.5 和 O3 污染的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Underestimated benefits of NOx control in reducing SNA and O3 based on missing heterogeneous HONO sources

Underestimated benefits of NOx control in reducing SNA and O3 based on missing heterogeneous HONO sources

Substantial NOx emission mitigation is crucial for the synergistic reduction of particulate matter and ozone (O3) pollution in China. The traditional air quality model does not consider heterogeneous HONO chemistry, leading to uncertainties in estimating the benefits of NOx control. Previous studies have shown that the parameterization of heterogeneous HONO formation increases both the simulated value of sulfate–nitrate–ammonium (SNA) and that of O3, thus adding the heterogeneous reactions of HONO into air quality models inevitably leads to changes in the estimated benefits of NOx abatement. Here we investigated the changes in SNA and O3 concentrations from NOx emission reduction before and after adding heterogeneous HONO reactions in the Community Multi-Scale Air Quality (CMAQ) model. Including heterogeneous HONO reactions in the simulation improved the benefits of NOx reduction in terms of SNA control in winter. With 80% NOx reduction, the reduction in SNA increased from 36.9% without considering heterogeneous HONO reactions to 42.8% with heterogeneous HONO chemistry. The reduction in the maximum daily 8h average (MDA8) O3 in summer caused by NOx reduction increased slightly from 4.7% to 5.2% after adding heterogeneous HONO reactions. The results in this study highlight the enhanced effectiveness of NOx controls for the reduction of SNA and O3 after considering heterogeneous HONO formation in a complex chemical ambient, demonstrating the importance of NOx controls in reducing PM2.5 and O3 pollution in China.

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来源期刊
Frontiers of Environmental Science & Engineering
Frontiers of Environmental Science & Engineering ENGINEERING, ENVIRONMENTAL-ENVIRONMENTAL SCIENCES
CiteScore
10.90
自引率
12.50%
发文量
988
审稿时长
6.1 months
期刊介绍: Frontiers of Environmental Science & Engineering (FESE) is an international journal for researchers interested in a wide range of environmental disciplines. The journal''s aim is to advance and disseminate knowledge in all main branches of environmental science & engineering. The journal emphasizes papers in developing fields, as well as papers showing the interaction between environmental disciplines and other disciplines. FESE is a bi-monthly journal. Its peer-reviewed contents consist of a broad blend of reviews, research papers, policy analyses, short communications, and opinions. Nonscheduled “special issue” and "hot topic", including a review article followed by a couple of related research articles, are organized to publish novel contributions and breaking results on all aspects of environmental field.
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