Apportioned primary and secondary organic aerosol during pollution events of DISCOVER-AQ Houston [0.03%]
DISCOVER-AQHouston观测期间污染事件中的分配一次和二次有机气溶胶贡献占比研究
Subin Yoon,Stephanie M Ortiz,Adelaide E Clark et al.
Subin Yoon et al.
Understanding the drivers for high ozone (O3) and atmospheric particulate matter (PM) concentrations is a pressing issue in urban air quality, as this understanding informs decisions for control and mitigation of these key pollutants. The H...
Relative contributions of selected multigeneration products to chamber SOA formed from photooxidation of a range (C10-C17) of n-alkanes under high NO x conditions [0.03%]
在高NOx条件下，一系列正构烷烃（C10-C17）光氧化生成室内二次有机气溶胶中部分多代产物的相对贡献率
Kenneth S Docherty,Robert Yaga,William Preston et al.
Kenneth S Docherty et al.
A series of chamber experiments was conducted to investigate the composition of secondary organic aerosol (SOA) following oxidation of a range of parent n-alkanes (C10-C17) in the presence of NO x . The relative contribution of selected spe...
E M Monbureau,D K Heist,S G Perry et al.
E M Monbureau et al.
The plume dispersion model AERMOD provides an efficient method for modeling ground-level pollutant concentrations in wakes of buildings. In recent years, several studies have shown that the downwash algorithms within AERMOD often perform po...
Global and regional variations in aerosol loading during COVID-19 imposed lockdown [0.03%]
COVID-19封锁期间全球和区域气溶胶载荷的变化
S D Sanap
S D Sanap
In the backdrop of upward trend in anthropogenic aerosols over global hotspot regions, the air quality had improved worldwide post declaration of the Corona virus disease-2019 (COVID-19) as a global pandemic in mid-March-2020. Present study...
Drivers for the poor air quality conditions in North China Plain during the COVID-19 outbreak [0.03%]
疫情期间华北平原空气污染成因分析
Mengmeng Li,Tijian Wang,Min Xie et al.
Mengmeng Li et al.
China's lockdown to control COVID-19 brought significant declines in air pollutant emissions, but haze was still a serious problem in North China Plain (NCP) during late-January to mid-February of 2020. We seek the potential causes for the ...
COVID-19 mitigation measures and nitrogen dioxide - A quasi-experimental study of air quality in Munich, Germany [0.03%]
新冠疫情下的防控措施与二氧化氮浓度变化——德国慕尼黑空气质量的准实验研究
Jacob Burns,Sabine Hoffmann,Christoph Kurz et al.
Jacob Burns et al.
Background: In response to the COVID-19 pandemic, the Bavarian State government announced several COVID-19 mitigation measures beginning on March 16, 2020, which likely led to a reduction in traffic and a subsequent impro...
Community evidence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission through air [0.03%]
空气传播的新型冠状病毒肺炎社区证据
Guozhen Lin,Shiyu Zhang,Yi Zhong et al.
Guozhen Lin et al.
Background: Nine COVID-19 (Corona Virus Disease, 2019) cases were observed in one community in Guangzhou. All the cases lived in three vertically aligned units of one building sharing the same piping system, which provide...
Iron Speciation in Particulate Matter (PM2.5) from Urban Los Angeles Using Spectro-microscopy Methods [0.03%]
基于光谱显微技术的洛杉矶城市细颗粒物（PM2.5）中铁赋存形态的研究
Ajith Pattammattel,Valerie J Leppert,Paul Aronstein et al.
Ajith Pattammattel et al.
The speciation, oxidation states, and relative abundance of iron (Fe) phases in PM2.5 samples from two locations in urban Los Angeles were investigated using a combination of bulk and spatially resolved, element-specific spectroscopy and mi...
Contrasting wet deposition composition between three diverse islands and coastal North American sites [0.03%]
三种不同岛屿与北美沿海站点湿沉降成分的对比分析
Lin Ma,Hossein Dadashazar,Miguel Ricardo A Hilario et al.
Lin Ma et al.
This study examined spatial variations of precipitation accumulation and chemistry for six sites located on the West and East Coasts of the U.S., and one site each on the islands of Hawaii, Bermuda, and Luzon of the Philippines (specificall...
Sources, frequency, and chemical nature of dust events impacting the United States East Coast [0.03%]
影响美国东海岸的沙尘事件的发生源、频率和化学性质
Abdulmonam M Aldhaif,David H Lopez,Hossein Dadashazar et al.
Abdulmonam M Aldhaif et al.
This study examines 14 years (2004-2017) of surface aerosol composition data from the EPA IMPROVE network with a focus on the monthly profile, sources, and chemical nature of extreme dust events (>92nd percentile of fine soil concentration ...