Impact of the COVID-19 induced lockdown measures on [Formula: see text] concentration in USA [0.03%]
美国新冠疫情封锁措施对[公式见正文][Formula: see text]浓度的影响
Rahul Ghosal,Enakshi Saha
Rahul Ghosal
In 2020, most countries around the world have observed varying degrees of public lockdown measures to mitigate the transmission of SARS-CoV-2. As an unintended consequence of reduced transportation and industrial activities, air quality has...
Impact of lockdown during the COVID-19 outbreak on multi-scale air quality [0.03%]
新冠肺炎疫情期间封锁对多尺度空气质量的影响
Casey D Bray,Alberth Nahas,William H Battye et al.
Casey D Bray et al.
One of the multi-facet impacts of lockdowns during the unprecedented COVID-19 pandemic was restricted economic and transport activities. This has resulted in the reduction of air pollution concentrations observed globally. This study is aim...
Improved Estimation of Trends in U.S. Ozone Concentrations Adjusted for Interannual Variability in Meteorological Conditions [0.03%]
考虑气象条件年际变化的美国臭氧浓度趋势的改进估计方法
Benjamin Wells,Pat Dolwick,Brian Eder et al.
Benjamin Wells et al.
Daily maximum 8-hour average (MDA8) ozone (O3) concentrations are well-known to be influenced by local meteorological conditions, which vary across both daily and seasonal temporal scales. Previous studies have adjusted long-term trends in ...
Characteristics of HONO and its impact on O3 formation in the Seoul Metropolitan Area during the Korea-US Air Quality Study [0.03%]
基于KORUS-OAQs实验的首尔都会区HONO特性及其对O3生成的影响研究
Junsu Gil,Jeonghwan Kim,Meehye Lee et al.
Junsu Gil et al.
Photolysis of nitrous acid (HONO) is recognized as an early-morning source of OH radicals in the urban air. During the Korea-US air quality (KORUS-AQ) campaign, HONO was measured using quantum cascade - tunable infrared laser differential a...
Deliberating Performance Targets: Follow-on workshop discussing PM10, NO2, CO, and SO2 air sensor targets [0.03%]
审议绩效目标：继PM10、NO2、CO和SO2空气传感器目标讨论会之后的研讨会
R M Duvall,G S W Hagler,A L Clements et al.
R M Duvall et al.
The use of air sensor technology is increasing worldwide for a variety of applications, however, with significant variability in data quality. The United States Environmental Protection Agency held a workshop in July 2019 to deliberate poss...
A Functional Data Analysis of Spatiotemporal Trends and Variation in Fine Particulate Matter [0.03%]
细颗粒物时空趋势和变异的功能数据分析
Meredith C King,Ana-Maria Staicu,Jerry M Davis et al.
Meredith C King et al.
In this paper we illustrate the application of modern functional data analysis methods to study the spatiotemporal variability of particulate matter components across the United States. The approach models the pollutant annual profiles in a...
Study on the variation of air pollutant concentration and its formation mechanism during the COVID-19 period in Wuhan [0.03%]
武汉疫情期间空气污染物浓度变化及其形成机制研究
Congwu Huang,Tijian Wang,Tao Niu et al.
Congwu Huang et al.
To prevent the spread of COVID-19 (2019 novel coronavirus), from January 23 to April 8 in 2020, the highest Class 1 Response was ordered in Wuhan, requiring all residents to stay at home unless absolutely necessary. This action was implemen...
Opportunities and Challenges for Filling the Air Quality Data Gap in Low- and Middle-Income Countries [0.03%]
发展中国家空气质量数据缺口及其机遇与挑战
Robert W Pinder,Jacqueline M Klopp,Gary Kleiman et al.
Robert W Pinder et al.
Given the millions of people suffering from air pollution, filling the air quality monitoring gap in low- and middle-income countries has been recognized as a global challenge. To meet this challenge and make it work will require private en...
Secondary Organic Aerosols from Aromatic Hydrocarbons and their Contribution to Fine Particulate Matter in Atlanta, Georgia [0.03%]
Atlanta地区芳香烃类气态前体物二次有机 aerosol生成潜势及其对细颗粒物质量浓度的贡献比例研究
Ibrahim M Al-Naiema,John H Offenberg,Carter J Madler et al.
Ibrahim M Al-Naiema et al.
Tracers of secondary organic aerosols (SOA) from thirteen aromatic hydrocarbons were quantified in laboratory smog chamber experiments. Class-specific SOA tracers emerged, including 2,3-dihydroxy-4-oxo-pentatonic acid (DHOPA) from monoaroma...