A comprehensive study of the COVID-19 impact on PM2.5 levels over the contiguous United States: A deep learning approach [0.03%]
美国大范围内COVID-19对PM2.5浓度影响的全面研究——基于深度学习方法的研究
Masoud Ghahremanloo,Yannic Lops,Yunsoo Choi et al.
Masoud Ghahremanloo et al.
We investigate the impact of the COVID-19 outbreak on PM2.5 levels in eleven urban environments across the United States: Washington DC, New York, Boston, Chicago, Los Angeles, Houston, Dallas, Philadelphia, Detroit, Phoenix, and Seattle. W...
Per- and Polyfluoroalkyl Substances (PFASs) in Airborne Particulate Matter (PM2.0) Emitted During Floor Waxing: A Pilot Study [0.03%]
地板打蜡过程中释放的颗粒物(PM2.0)中的含氟化合物(PFASs):一项初步研究
Jiaqi Zhou,Karsten Baumann,Naomi Chang et al.
Jiaqi Zhou et al.
Per- and polyfluoroalkyl substances (PFASs), with their water- and heat-resistant properties, have been widely used in industrial and consumer products, including floor waxes. Adverse health effects are associated with PFAS exposures (e.g.,...
The effect of the 2020 COVID-19 lockdown on atmospheric black carbon levels in northeastern Greenland [0.03%]
2020年COVID-19封锁对格陵兰东北部大气黑碳水平的影响
Daniel Charles Thomas,Jesper H Christensen,Andreas Massling et al.
Daniel Charles Thomas et al.
The outbreak of SARS-CoV-2 and subsequent spread of the disease COVID-19 became classified as a pandemic in March of 2020, leading to global safety measures introduced to limit the impact of the virus. This combination of safety measures ha...
Impact of near-surface turbulence on PM2.5 concentration in Chengdu during the COVID-19 pandemic [0.03%]
新冠肺炎疫情期间成都近地层湍流对PM2. 5浓度的影响研究
Xin Xia,Kui Zhang,Rong Yang et al.
Xin Xia et al.
The role of meteorological conditions has long been recognized in modulating regional air quality. The impact of near-surface turbulence, nevertheless, remains poorly understood. To curb the spread of COVID-19, a variety of lockdown measure...
Particle composition, sources and evolution during the COVID-19 lockdown period in Chengdu, southwest China: Insights from single particle aerosol mass spectrometer data [0.03%]
中国西南部成都新冠疫情封锁期间颗粒物组成、来源和演变的单颗粒质谱研究
Junke Zhang,Huan Li,Luyao Chen et al.
Junke Zhang et al.
In order to investigate the effects of the Coronavirus Disease 2019 (COVID-19) lockdown on air quality in cities in southwest China, a single particle aerosol mass spectrometer (SPAMS) and other online equipments were used to measure the ai...
Impacts of COVID-19 on air quality in mid-eastern China: An insight into meteorology and emissions [0.03%]
COVID-19对中国中东部空气质量的影响：气象和排放的深入分析
Xiuyong Zhao,Gang Wang,Sheng Wang et al.
Xiuyong Zhao et al.
The coronavirus disease (COVID-19) spread rapidly worldwide in the first half of 2020. Stringent national lockdown policies imposed by China to prevent the spread of the virus reduced anthropogenic emissions and improved air quality. A weat...
Nonlinear response of nitrate to NOx reduction in China during the COVID-19 pandemic [0.03%]
新冠疫情下中国NOx减排对硝酸盐的非线性响应
Chuanhua Ren,Xin Huang,Zilin Wang et al.
Chuanhua Ren et al.
In recent years, nitrate plays an increasingly important role in haze pollution and strict emission control seems ineffective in reducing nitrate pollution in China. In this study, observations of gaseous and particulate pollutants during t...
High-volume sampler for size-selective sampling of bioaerosols including viruses [0.03%]
用于包括病毒在内的生物气溶胶的选择性采样的高容量采样器
Jun-Hyung Lim,Sang Hwan Nam,Jongwoo Kim et al.
Jun-Hyung Lim et al.
Owing to the recent global spread of the new coronavirus SARS-CoV-2, the development of technology to effectively detect viruses in crowded public places is urgently needed. In this study, a three-stage high-volume bioaerosol sampler was de...
Michael Pirhalla,David Heist,Steven Perry et al.
Michael Pirhalla et al.
Following the release of a harmful substance within an urban environment, buildings and street canyons create complex flow regimes that affect dispersion and localized effluent concentrations. While some fast-response dispersion models can ...
Impacts of the COVID-19 economic slowdown on ozone pollution in the U.S [0.03%]
经济放缓对美国臭氧污染的影响——COVID-19的例子
Patrick C Campbell,Daniel Tong,Youhua Tang et al.
Patrick C Campbell et al.
In this work, we use observations and experimental emissions in a version of NOAA's National Air Quality Forecasting Capability to show that the COVID-19 economic slowdown led to disproportionate impacts on near-surface ozone concentrations...