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DOI | 10.5194/acp-17-9869-2017 |
Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates | |
Xing, Jia1; Wang, Jiandong1; Mathur, Rohit2; Wang, Shuxiao1; Sarwar, Golam2; Pleim, Jonathan2; Hogrefe, Christian2; Zhang, Yuqiang2; Jiang, Jingkun1; Wong, David C.2; Hao, Jiming1 | |
发表日期 | 2017-08-22 |
ISSN | 1680-7316 |
卷号 | 17期号:16页码:9869-9883 |
英文摘要 | Aerosol direct effects (ADEs), i.e., scattering and absorption of incoming solar radiation, reduce radiation reaching the ground and the resultant photolysis attenuation can decrease ozone (O-3) formation in polluted areas. One the other hand, evidence also suggests that ADE-associated cooling suppresses atmospheric ventilation, thereby enhancing surface-level O-3. Assessment of ADE impacts is thus important for understanding emission reduction strategies that seek co-benefits associated with reductions in both particulate matter and O-3 levels. This study quantifies the impacts of ADEs on tropospheric ozone by using a two-way online coupled meteorology and atmospheric chemistry model, WRFCMAQ, using a process analysis methodology. Two manifestations of ADE impacts on O-3 including changes in atmospheric dynamics (Delta Dynamics) and changes in photolysis rates (Delta Photolysis) were assessed separately through multiple scenario simulations for January and July of 2013 over China. Results suggest that ADEs reduced surface daily maxima 1 h O-3 (DM1O(3)) in China by up to 39 mu gm(-)3 through the combination of Delta Dynamics and Delta Photolysis in January but enhanced surface DM1O(3) by up to 4 mu gm(-3) in July. Increased O-3 in July is largely attributed to 1 Dynamics, which causes a weaker O-3 sink of dry deposition and a stronger O-3 source of photochemistry due to the stabilization of the atmosphere. Meanwhile, surface OH is also enhanced at noon in July, though its daytime average values are reduced in January. An increased OH chain length and a shift towards more volatile organic compound (VOC)-limited conditions are found due to ADEs in both January and July. This study suggests that reducing ADEs may have the potential risk of increasing O-3 in winter, but it will benefit the reduction in maxima O-3 in summer. |
语种 | 英语 |
WOS记录号 | WOS:000408098800005 |
来源期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/57667 |
作者单位 | 1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China; 2.US EPA, Res Triangle Pk, NC 27711 USA |
推荐引用方式 GB/T 7714 | Xing, Jia,Wang, Jiandong,Mathur, Rohit,et al. Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates[J]. 美国环保署,2017,17(16):9869-9883. |
APA | Xing, Jia.,Wang, Jiandong.,Mathur, Rohit.,Wang, Shuxiao.,Sarwar, Golam.,...&Hao, Jiming.(2017).Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(16),9869-9883. |
MLA | Xing, Jia,et al."Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.16(2017):9869-9883. |
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