| 邢台氨减排对京津冀PM2.5改善的溢出效益 |
| 摘要点击 1375 全文点击 90 投稿时间：2023-05-30 修订日期：2023-07-08 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 NH3减排 溢出效益 WRF-CAMx-PSAT模型 大气污染 京津冀 |
| 英文关键词 NH3 emission reduction spillover benefits WRF-CAMx-PSAT model air pollution Beijing-Tianjin-Hebei Region |
| 作者 | 单位 | E-mail | | 边泽君 | 北京工业大学环境与生命学部, 区域大气复合污染防治北京市重点实验室, 北京 100124 | bianzj0701@emails.bjut.edu.cn | | 闻超玉 | 北京工业大学环境与生命学部, 区域大气复合污染防治北京市重点实验室, 北京 100124 | | | 郎建垒 | 北京工业大学环境与生命学部, 区域大气复合污染防治北京市重点实验室, 北京 100124 | jllang@bjut.edu.cn | | 范晓菡 | 北京工业大学环境与生命学部, 区域大气复合污染防治北京市重点实验室, 北京 100124 | | | 夏祥晨 | 北京工业大学环境与生命学部, 区域大气复合污染防治北京市重点实验室, 北京 100124 | | | 周颖 | 北京工业大学环境与生命学部, 区域大气复合污染防治北京市重点实验室, 北京 100124 | |
|
| 中文摘要 |
| 氨减排会对周边大气PM2.5污染改善带来潜在的溢出效益,但尚缺乏对其规律的探究.利用WRF-CAMx-PSAT模型模拟量化了典型城市（邢台）NH3减排对周边地区大气PM2.5浓度降低的溢出效益,探究了其在不同季节与不同NH3减排比例下、对PM2.5及其二次无机化学组分随距离变化的响应规律.结果表明：①NH3减排在不同减排比例下对周边城市的PM2.5及其二次组分均存在溢出效益,其效益随周边受体城市与减排城市相对距离的增加呈显著的指数下降的趋势；②在1月的溢出效益远高于7月,1月在不同减排比例下京津冀PM2.5浓度下降值约为7月的7.4倍；③各组分溢出范围随着减排比例的增加不断扩大,NH4+和SO42-的溢出最远距离呈指数趋势上升,NO3-的溢出最远距离呈线性趋势上升；④NO3-、NH4+和SO42-的溢出范围及浓度变化随着减排比例的增加不断上升,其中NO3-溢出范围最远约为NH4+和SO42-的3.6倍和3.4倍,浓度变化最大约为NH4+和SO42-的2.6倍和7.3倍. |
| 英文摘要 |
| Ammonia emission reduction would bring potential spillover benefits to the improvement of surrounding atmospheric PM2.5 pollution, but the investigation of its patterns is lacking. The WRF-CAMx-PSAT model was used to quantify the spillover benefits of NH3 emission reduction in a typical city （Xingtai） on the reduction in PM2.5 concentrations in the surrounding area and to investigate the response patterns of PM2.5 and its secondary inorganic chemical components with distance in different seasons and at different NH3 emission reduction ratios. The results showed that： ① the spillover benefits of NH3 emission reduction on PM2.5 and its secondary components in neighboring cities at different reduction ratios and the benefits showed a significant exponential decrease with the increase in the relative distance between the neighboring receptor cities and the reduction cities. ② The spillover benefits in January were much higher than those in July, and the reduction in PM2.5 concentration in Beijing-Tianjin-Hebei at different reduction ratios in January was approximately 7.4 times that in July. ③ The spillover range was expanding with the increase in emission reduction ratio, the farthest distance of NH4+ and SO42- spillover was increasing exponentially, and the farthest distance of NO3- spillover was increasing linearly. ④ The spillover range and concentration change in NO3-, NH4+, and SO42- increased with the increase in the abatement ratio, in which the spillover range of NO3- was the farthest, approximately 3.6 times and 3.4 times that of NH4+ and SO42-, and the concentration change was the largest, approximately 2.6 times and 7.3 times that of NH4+ and SO42-. |
|
|
|
