Article
Environmental Sciences
Jinli Xu, Huifan Deng, Yiqun Wang, Pan Li, Jianqiang Zeng, Hongwei Pang, Xin Xu, Xue Li, Yan Yang, Sasho Gligorovski
Summary: Human daily activities such as cooking and cleaning can affect indoor air quality by emitting volatile organic compounds (VOCs) and forming secondary compounds through reactions with ozone (O3) and hydroxyl radicals (OH). However, our understanding of the formation processes of secondary VOCs is still limited. In this study, we measured the primary VOCs emitted by a commercial floor-cleaning detergent and the secondary compounds formed by the reaction of O3 with the detergent using high-resolution mass spectrometry. We also developed reaction mechanisms to describe the formation of these secondary VOCs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Min Ju Yeo, Yong Pyo Kim
Summary: The state of surface ozone in Korea is influenced by regional background levels and local photochemical reactions, resulting in high spatial and temporal heterogeneity, thus requiring district-specific control policies based on different target indicators.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Henry Bowman, Steven Turnock, Susanne E. Bauer, Kostas Tsigaridis, Makoto Deushi, Naga Oshima, Fiona M. O'Connor, Larry Horowitz, Tongwen Wu, Jie Zhang, Dagmar Kubistin, David D. Parrish
Summary: Simulations from CMIP6 Earth system models show that the seasonal cycle of baseline tropospheric ozone at northern midlatitudes has been shifting since the mid-20th century. This shift is related to changes in anthropogenic emissions and the rise and fall of ozone precursor concentrations.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
J. A. Adame, I. Gutierrez-Alvarez, P. Cristofanellic, A. Notariod, J. A. Bogeat, J. P. Bolivar, M. Yela
Summary: Surface ozone trends observed at El Arenosillo observatory for the last 22 years (2000-2021) show a significant increase of background ozone. The study also explores the impact of surface temperature trends and weather pattern shifts on ozone trends. Monthly and daily hourly variations in surface ozone trends are also investigated.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Melanie Coldewey-Egbers, Diego G. Loyola, Christophe Lerot, Michel Van Roozendael
Summary: This article presents an updated perspective on the near-global total ozone trend from 1995 to 2020. The study uses satellite data records and focuses on regional patterns and seasonal dependency. The findings show significant positive trends in the Southern Hemisphere and distinct regional patterns in the middle latitudes of the Northern Hemisphere. The trends are also correlated with long-term changes in tropopause pressure. Additionally, the study identifies variations in the seasonal dependence of trends based on latitude.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Jin Hong, Wuke Wang, Zhixuan Bai, Jianchun Bian, Mengchu Tao, Paul Konopka, Felix Ploeger, Rolf Muller, Hongyue Wang, Jinqiang Zhang, Shuyun Zhao, Jintao Zhu
Summary: This study analyzed the variation of surface ozone levels in Beijing from 1995 to 2020 using multiple observational data sources, revealing a sudden decrease in 2011-2012 followed by an increasing trend, and documented a significant increase in the amplitude of the ozone annual cycle in Beijing for the first time.
Article
Environmental Sciences
Ravi Kumar Kunchala, Bhupendra Bahadur Singh, Rama Krishna Karumuri, Raju Attada, Vivek Seelanki, Kondapalli Niranjan Kumar
Summary: Surface ozone levels have increased in different parts of the world, including India, due to rising anthropogenic activities. Ground-based observations and reanalysis datasets were used to study spatiotemporal variations of surface ozone in India, showing higher concentrations during pre-monsoon months and an increasing trend over all regions. Solar radiation, temperature, circulation, and boundary layer height were found to influence seasonal variations, with the eastern region showing the highest increasing trend.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
J. A. Adame, I Gutierrez-Alvarez, P. Cristofanelli, A. Notario, J. A. Bogeat, A. Lopez, A. Gomez, J. P. Bolivar, M. Yela
Summary: This study analyzed the trends of near-surface ozone concentration measured at El Arenosillo observatory in Southwestern Europe over a period of 21 years. The results showed that there is an overall upward trend in ozone concentration, particularly during cold seasons and nighttime. Factors such as temperature and atmospheric pressure were found to influence the ozone concentration, while reductions in emissions had a negative impact on ozone formation during warm seasons and daytime. Further research is needed to explore other processes contributing to the observed upward trend.
ATMOSPHERIC RESEARCH
(2022)
Article
Environmental Sciences
Natsumi Kawano, Tatsuya Nagashima, Seiji Sugata
Summary: The seasonal cycle of surface ozone has changed in Japan in the past few decades, with variations depending on the region. The relationship between monthly ozone mixing ratios in April and May can explain the changes in the temporal patterns of the seasonal cycle. Different chemical processes contribute to ozone increases in different periods.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Alfonso Saiz-Lopez, Rafael P. P. Fernandez, Qinyi Li, Carlos A. A. Cuevas, Xiao Fu, Douglas E. E. Kinnison, Simone Tilmes, Anoop S. S. Mahajan, Juan Carlos Gomez Martin, Fernando Iglesias-Suarez, Ryan Hossaini, John M. C. Plane, Gunnar Myhre, Jean-Francois Lamarque
Summary: Observational evidence suggests that ocean-emitted short-lived halogens have a widespread presence in the global atmosphere. These compounds, both naturally emitted and anthropogenically amplified, have a significant cooling effect on Earth's radiative balance. This effect has increased since pre-industrial times and is projected to change further in the future.
Article
Thermodynamics
Zifeng Weng, Fernando Veiga-Lopez, Josue Melguizo-Gavilanes, Remy Mevel
Summary: This study numerically investigates the influence of ozone on quasi-steady curved detonations. The addition of ozone significantly increases the curvature at critical points by accelerating both high- and low-temperature chemistry. Two mechanisms are found to be responsible for these results: the increase in the rate of reaction initiation and the influence on reaction pathways. The study contributes to a detailed understanding of the thermo-chemical impact of ozone on detonation limits.
COMBUSTION AND FLAME
(2023)
Article
Geosciences, Multidisciplinary
Wenjie Wang, Xin Li, Yafang Cheng, David D. Parrish, Ruijing Ni, Zhaofeng Tan, Ying Liu, Sihua Lu, Yusheng Wu, Shiyi Chen, Keding Lu, Min Hu, Limin Zeng, Min Shao, Cheng Huang, Xudong Tian, K. M. Leung, Liangfu Chen, Meng Fan, Qiang Zhang, Franz Rohrer, Andreas Wahner, Ulrich Poschl, Hang Su, Yuanhang Zhang
Summary: Tropospheric ozone pollution is a critical air-quality concern in China. The most effective mitigation approach is still debated, but this study suggests that controlling volatile organic compounds should be a priority, followed by reducing nitrogen oxides.
Article
Environmental Sciences
Arseniy Karagodin-Doyennel, Eugene Rozanov, Timofei Sukhodolov, Tatiana Egorova, Jan Sedlacek, William Ball, Thomas Peter
Summary: Evidence suggests that the ozone layer is recovering due to the ban on ozone-depleting substances. However, recent studies show an increase in tropospheric ozone and a decline in stratospheric ozone, which current global chemistry-climate models fail to reproduce. A new Earth system model (ESM) called SOCOLv4 is able to simulate the observed ozone changes, indicating its potential usefulness in predicting future ozone trends.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Geosciences, Multidisciplinary
Kathy S. Law, Jens L. Hjorth, Jakob B. Pernov, Cynthia H. Whaley, Henrik Skov, Martine Collaud Coen, Joakim Langner, Stephen R. Arnold, David Tarasick, Jesper Christensen, Makoto Deushi, Peter Effertz, Greg Faluvegi, Michael Gauss, Ulas Im, Naga Oshima, Irina Petropavlovskikh, David Plummer, Kostas Tsigaridis, Svetlana Tsyro, Sverre Solberg, Stephen Turnock
Summary: Observed trends in Arctic tropospheric ozone, such as increases in surface ozone during winter and negative spring trends, are captured by multi-model median trends, but tend to be overestimated. Model performance and possible reasons for observed changes are discussed.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Chemistry, Physical
Muhammad Atif, Hafiz Zeshan Haider, Roberta Bongiovanni, Maria Fayyaz, Tayyaba Razzaq, Sara Gul
Summary: This review compares the modifications of carbon black surface through chemisorption and physisorption. It finds that the first method, despite its high yield, is ineffective for thermally unstable materials, while the second method, although effective for thermally unstable materials, is delicate due to easy desorption.
SURFACES AND INTERFACES
(2022)
Article
Construction & Building Technology
Glenn Morrison, John Cagle, Gauri Date
Summary: This study surveyed window- and door-opening behavior nationwide, finding that frequency and duration of window opening are associated with factors such as income, housing type, climate region, and ethnicity. Different regions and climates also show variations in window-opening behavior.
Article
Construction & Building Technology
Barbara Kolarik, Glenn C. Morrison
Summary: The study found that in a contaminated indoor environment, PCBs can adsorb to fabrics, and washing and drying can effectively remove PCBs from fabrics, with mechanical drying being more effective than air-drying.
Editorial Material
Construction & Building Technology
Jonathan P. D. Abbatt, Glenn C. Morrison, Vicki H. Grassian, Manabu Shiraiwa, Charles J. Weschler, Paul J. Ziemann
Review
Construction & Building Technology
Tunga Salthammer, Glenn C. Morrison
Summary: From a thermodynamic perspective, temperature is clearly defined for ideal physical systems, but in indoor environments, it is influenced by complex factors. Processes such as diffusion, partitioning equilibria, and chemical reactions are greatly affected by temperature, while transport processes are influenced by spatial temperature, momentum, pressure gradients, and indoor material properties. The thermal comfort needs of occupants and building design requirements also play a significant role in indoor environmental conditions.
Editorial Material
Engineering, Environmental
Rima Habre, David C. Dorman, Jonathan Abbatt, William P. Bahnfleth, Ellison Carter, Delphine Farmer, Gillian Gawne-Mittelstaedt, Allen H. Goldstein, Vicki H. Grassian, Glenn Morrison, Jordan Peccia, Dustin Poppendieck, Kimberly A. Prather, Manabu Shiraiwa, Heather M. Stapleton, Meredith Williams, Megan E. Harries
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Gen Pei, Yuan Xuan, Glenn Morrison, Donghyun Rim
Summary: Ozone-initiated oxidation reactions on indoor surfaces have a significant impact on the chemical composition of indoor air and human exposure to air toxins. This study investigates the mechanisms of ozone reactions with realistic indoor surfaces using microscope scanning and detailed Computational Fluid Dynamics (CFD) simulation. The results show that the indoor surface topography affects ozone mass transport and uptake, providing insights into indoor chemistry and air quality implications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Glenn Morrison, Azin Eftekhari, Aixing Fan, Francesca Majluf, Jordan E. Krechmer
Summary: Personal care products can reduce the impact of ozone on the skin, but it hasn't been proven that they can mitigate the effects of air pollution on skin health.
Article
Environmental Sciences
Jacqueline Bangma, James McCord, Nathan Giffard, Kate Buckman, Jonathan Petali, Celia Chen, Daniel Amparo, Barbara Turpin, Glenn Morrison, Mark Strynar
Summary: While high-resolution MS is suitable for novel PFAS identification and quantification, low-resolution MS/MS is the more commonly used and affordable approach for routine PFAS monitoring. However, the interference of chemical compounds in the quantitative ion channel hinders the verification of PFPeA and PFBA on low-resolution instrumentation. Adjustments to analytical methods, such as altering LC conditions and using matched internal standards, are recommended to investigate and confirm PFBA and PFPeA detections in both biological and environmental samples.
Article
Engineering, Environmental
Kaitlin Urso, William Vizuete, Ryan Moravec, Andrey Khlystov, Alicia Frazier, Glenn Morrison
Summary: In 2019, a study conducted by the Colorado Department of Public Health and Environment's Air Pollution Control Division found that biogenic VOC emissions in cannabis cultivation facilities vary widely, with the highest emissions occurring during post-harvest activities such as trimming. The dominant terpenes measured in all facilities were beta-myrcene, terpinolene, and D-limonene.
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2023)
Article
Engineering, Environmental
Glenn Morrison, Ryan Moravec, Zhenduo Yao
Summary: Recent evidence suggests that indoor ozone chemistry products contribute to cardiovascular pathophysiology through the formation of reactive oxygen species (ROS) on indoor surfaces. The yield of condensed-phase ROS on a model indoor surface film exposed to ozone was measured, and it was found that approximately 46% of the consumed ozone formed ROS. These ROS persisted on the surface for several hours and could continue to form even in the absence of ozone.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Engineering, Environmental
Clara M. A. Eichler, Naomi Y. Chang, Elaine A. Cohen Hubal, Daniel E. Amparo, Jiaqi Zhou, Jason D. Surratt, Glenn C. Morrison, Barbara J. Turpin
Summary: During the Indoor PFAS Assessment (IPA) Campaign, concentrations of nine neutral PFAS were measured in air and cotton cloth in 11 homes in North Carolina. The study found that fluorotelomer alcohols were the dominant species in indoor air, while perfluorooctane sulfonamidoethanols accumulated most significantly in cloth. Cloth-air partition coefficients were derived for different PFAS and were positively correlated with the octanol-air partition coefficient. Temperature was found to have the greatest effect on PFAS accumulation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Lisa Ernle, Nijing Wang, Gabriel Bekoe, Glenn Morrison, Pawel Wargocki, Charles J. J. Weschler, Jonathan Williams
Summary: Proton transfer reaction-mass spectrometry (PTR-MS) is commonly used for monitoring volatile organic compounds in indoor and outdoor environments. However, the use of mass-to-charge ratio m/z 69.07 as an indicator of indoor isoprene can be affected by the presence of aldehydes, especially when ozone levels are high.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2023)
Article
Engineering, Environmental
Stephanie C. Hammel, Azin Eftekhari, Clara M. A. Eichler, Chih-Wei Liu, Leena A. Nylander-French, Lawrence S. Engel, Kun Lu, Glenn C. Morrison
Summary: This pilot study suggests that wearing precleaned clothing can significantly reduce environmental exposure to phthalates and phthalate alternatives. The transdermal uptake of semivolatile organic compounds is influenced by everyday clothing.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Pascale S. J. Lakey, Andreas Zuend, Glenn C. Morrison, Thomas Berkemeier, Jake Wilson, Caleb Arata, Allen H. Goldstein, Kevin R. Wilson, Nijing Wang, Jonathan Williams, Jonathan P. D. Abbatt, Manabu Shiraiwa
Summary: Studies have shown that the reaction of squalene with ozone can produce various products, and the yield depends on relative humidity. A new mechanism has been developed to simulate these reactions and control the concentrations of different products accordingly. Increasing relative humidity significantly impacts the concentrations of various products.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2023)
Article
Chemistry, Analytical
Glenn C. Morrison, Azin Eftekhari, Pascale S. J. Lakey, Manabu Shiraiwa, Bryan E. Cummings, Michael S. Waring, Brent Williams
Summary: Field studies suggest that indoor sources of reactive oxygen species (ROS) contribute to measured ROS on particulate matter (PM) in indoor air. This study supports the hypothesis that ozone-induced formation of organic peroxides (OPX) on indoor surfaces, and subsequent partitioning to aerosols, is sufficient to explain field observations.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2022)