Article
Environmental Sciences
Zuleica Ojeda Lerma, Claudia Rivera Cardenas, Martina M. Friedrich, Wolfgang Stremme, Alejandro Bezanilla, Edgar J. Arellano, Michel Grutter
Summary: This study evaluates the accuracy of the DOMINO product from OMI by comparing it with ground-based MAX-DOAS instruments in the Mexico City Metropolitan Area. The differences observed between OMI and MAX-DOAS VCDs are attributed to reduced sensitivity of the satellite product near the surface. However, improvements in the linear regression slopes at individual sites are observed after smoothing the MAX-DOAS profiles.
Article
Environmental Sciences
Ronald Opio, Isaac Mugume, Joyce Nakatumba-Nabende
Summary: This study used satellite observations to investigate the trends of nitrogen dioxide, sulfur dioxide, and carbon monoxide in the East African region, identifying seasonal fires in savanna woodlands and urban areas as major sources of pollution. The study found no trend in nitrogen dioxide, a decreasing trend in sulfur dioxide, and varying trends in carbon monoxide at different altitudes in the atmosphere.
Article
Environmental Sciences
Nathan R. Pavlovic, Shih Ying Chang, Jiaoyan Huang, Kenneth Craig, Christopher Clark, Kevin Horn, Charles T. Driscoll
Summary: This study used machine learning models to assess the impact of nitrogen and sulfur atmospheric deposition on tree species and calculated the uncertainty of critical loads. The research found a significant uncertainty range that should be considered in management and decision-making.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Yating Ma, Wanzhou Wang, Zichuan Li, Yaqin Si, Jinxi Wang, Libo Chen, Chen Wei, Hualiang Lin, Furong Deng, Xinbiao Guo, Xiaoli Ni, Shaowei Wu
Summary: The study found significant associations between short-term exposure to ambient NO2 and SO2 and the risk of daily hospital admissions for anxiety, especially in the southern region and patients under 65 years old.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Yongjoo Choi, Yugo Kanaya, Hisahiro Takashima, Hitoshi Irie, Kihong Park, Jihyo Chong
Summary: The study investigated long-term observations of tropospheric nitrogen dioxide in East Asia, with results showing good agreement between MAX-DOAS and OMI data in the summer but differences in the winter. The Theil-Sen slope indicated a reduction in NO2 at urban and remote sites, except for Gwangju, Korea. OMI satellite data revealed an increase in NO2 levels, suggesting caution in using satellite data for less polluted areas.
Article
Multidisciplinary Sciences
Shuchita Srivastava, Asfa Siddiqui, D. Mitra, Prakash Chauhan
Summary: The nationwide lockdown in India led to a significant reduction in nitrogen dioxide levels across the country, particularly in the Indo Gangetic Plain, eastern and southern regions. However, the western region showed a slight increase, possibly due to polluted air transport from the Middle East and Pakistan, as well as higher biomass burning activity in 2020.
Review
Chemistry, Inorganic & Nuclear
Nishesh Kumar Gupta, Kumar Vikrant, Kwang Soo Kim, Ki-Hyun Kim, Dimitrios A. Giannakoudakis
Summary: This article provides a comprehensive review of various methods for the regeneration of MOFs after capturing H2S, SO2, and NO2. Pressure and temperature swing methods can reactivate MOFs after physical adsorption of gases. Although regenerating MOFs with chemisorbed sulfurous gases poses more difficulties, reactivation strategies such as solvent and ultraviolet irradiation-based treatments can be recommended.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
S. Martinez-Alonso, J. P. Veefkind, B. Dix, B. Gaubert, N. Theys, C. Granier, A. Soulie, S. Darras, H. Eskes, W. Tang, H. Worden, J. de Gouw, P. F. Levelt
Summary: We analyzed TROPOMI data over the Copperbelt mining region and identified six point sources of high emissions. We quantified the emissions and observed strong correlations with production data from mines and one refinery. The CAMS-GLOB-ANT inventory underestimated emissions and lacked temporal trends. These results demonstrate the potential of satellite monitoring for tracking mining and industrial activities.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Agriculture, Multidisciplinary
Elisabeth Tanner, Nina Buchmann, Werner Eugster
Summary: Mires in the Swiss Alpine foothills are negatively affected by eutrophication caused by excessive nitrogen inputs, particularly from ammonia emissions in agriculture. This study found that the nitrogen inputs to a mire exceeded critical loads, which could lead to ecosystem instability and biodiversity loss.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Materials Science, Multidisciplinary
Hossein Roohi, Nastaran Askari Ardehjani
Summary: The adsorption and sensing properties of transition metal-doped gallium nitride nanosheets towards SO2 and NO2 gases were investigated. It was found that Fe-doped GaNNS showed better adsorption for NO2 and SO2, while Zn-doped GaNNS and Zn-Ga-GaNNS were more suitable for sensing NO2 and SO2 gases, respectively.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Todd C. McDonnell, Jennifer Phelan, Alan F. Talhelm, Bernard J. Cosby, Charles T. Driscoll, Timothy J. Sullivan, Tara Greaver
Summary: This study compared critical loads and target loads derived from steady-state and dynamic models for determining the thresholds of air pollution damage to ecosystems. Results showed that dynamic models produced a broader range of values and allowed for evaluation of timedependent phenomena and period needed for recovery. It is recommended to use dynamic models in areas with available data, but steady-state models remain a useful tool for understanding broad spatial patterns. Future work should focus on improving model input parameters and exploring the effects of climate change.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Chemical
Yingshu Liu, Ningqi Sun, Ziyi Li, Penny Xiao, Yi Xing, Xiong Yang, Chunyu Zhao, Chuanzhao Zhang, Haoyu Wang, Ralph T. Yang, Paul A. Webley
Summary: The dual-column distillation separation process proposed in this study can further separate and upgrade NO2 and SO2, achieving both economic value and environmental benefits. The liquid-phase feeding way shows advantages in lower energy consumption compared to the gas-phase counterpart, and the process demonstrates robustness against feed composition fluctuation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Prasanjit Dey, Bibhash Pran Das, Yee Hui Lee, Soumyabrata Dev
Summary: With the increase in atmospheric pollution, continuous monitoring of atmospheric gas concentration has become crucial. Satellite monitoring offers a global coverage alternative to traditional in situ measurement strategies. However, satellite measurements do not provide information on vertical concentration profiles, leading to the need for estimation methods. Our research proposes a convolutional neural network, called the near-surface network, which is designed to estimate near-surface concentrations of atmospheric trace gases using only vertical column density (VCD) values.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2023)
Article
Chemistry, Organic
Yaping Li, Ming Wang, Xuefeng Jiang
Summary: The study successfully achieved a multicomponent reaction involving sodium dithionite for constructing alkyl and alkenyl tertiary sulfones. By utilizing sodium dithionite as a substitute and single-electron reductant, the decarboxylation of redox-active esters was initiated. Mechanistic studies revealed a proton trapping process in the transformation, distinct from the traditional radical trapping pathway.
Article
Obstetrics & Gynecology
Wen Jiang, Zhiyu Liu, Bin Ni, Wanqin Xie, Haiyan Zhou, Xingli Li
Summary: Exposure to NO2 and SO2 during the first trimester of pregnancy is consistently associated with an increased risk of CLDs. Meteorological conditions such as low and high temperatures and high humidity act synergistically with these air pollutants to further increase the risk.
HUMAN REPRODUCTION
(2021)
Article
Environmental Sciences
Daniel B. Odo, Ian A. Yang, Sagnik Dey, Melanie S. Hammer, Aaron van Donkelaar, Randall V. Martin, Guang-Hui Dong, Bo-Yi Yang, Perry Hystad, Luke D. Knibbs
Summary: Exposure to ambient air pollution, specifically fine particulate matter (PM2.5), is associated with adverse effects on cognitive development in young children in low- and middle-income countries (LMICs). An increase in annual average PM2.5 concentration is linked to a higher likelihood of cognitive delay. The study suggests that reducing air pollution levels can have significant long-term benefits for educational attainment and overall health outcomes in children.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Md Mostafijur Rahman, Sarah A. Carter, Jane C. Lin, Ting Chow, Xin Yu, Mayra P. Martinez, Zhanghua Chen, Jiu-Chiuan Chen, Daniel Rud, Juan P. Lewinger, Aaron van Donkelaar, Randall V. Martin, Sandrah Proctor Eckel, Joel Schwartz, Fred Lurmann, Michael J. Kleeman, Rob McConnell, Anny H. Xiang
Summary: This retrospective cohort study examined the associations between prenatal exposure to major fine particulate matter (PM2.5) components and autism spectrum disorder (ASD). The study included 318,750 mother-child pairs and found that pregnancy-average exposure to PM2.5, EC/BC, OM, and SO42- were associated with ASD after adjusting for other factors, while the association with NO3- was least consistent. The effect estimates for EC/BC and OM were larger and more consistent in the first and second trimester, while SO42- was more consistent in the third trimester.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Kelsey R. Bilsback, Yicong He, Christopher D. Cappa, Rachel Ying-Wen Chang, Betty Croft, Randall Martin, Nga Lee Ng, John H. Seinfeld, Jeffrey R. Pierce, Shantanu H. Jathar
Summary: A study shows that experimental artifacts in environmental chambers can affect atmospheric models of secondary organic aerosol (OA). By combining a box model and a pseudo-atmospheric simulation, we derived parameters for use in chemical transport models and found that the effects of V2PWL can be ignored.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Daniel B. Odo, Ian A. Yang, Sagnik Dey, Melanie S. Hammer, Aaron van Donkelaar, Randall V. Martin, Guang-Hui Dong, Bo-Yi Yang, Perry Hystad, Luke D. Knibbs
Summary: This study aimed to determine the impact of long-term exposure to ambient fine particulate matter pollution on hemoglobin levels and the prevalence of anemia in children (<5 years old) in 36 low- and middle-income countries. The results showed that exposure to fine particulate matter pollution was associated with lower hemoglobin levels and an increased risk of anemia, with additional effects related to household wealth index and place of residence.
ENVIRONMENTAL RESEARCH
(2023)
Article
Meteorology & Atmospheric Sciences
A. Ukhov, G. Stenchikov, S. Osipov, N. Krotkov, N. Gorkavyi, Can Li, O. Dubovik, A. Lopatin
Summary: This study utilized inverse modeling to estimate the time-dependent emissions profiles and initial 3D spatial distributions of volcanic ash and SO2 for the Mt. Pinatubo eruption. The obtained data is valuable for forecasting volcanic clouds and simulating their climate effects.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Astronomy & Astrophysics
H. -A. Kwon, G. Gonzalez Abad, C. R. Nowlan, H. Chong, A. H. Souri, C. Vigouroux, A. Roehling, R. Kivi, M. Makarova, J. Notholt, M. Palm, H. Winkler, Y. Te, R. Sussmann, M. Rettinger, E. Mahieu, K. Strong, E. Lutsch, S. Yamanouchi, T. Nagahama, J. W. Hannigan, M. Zhou, I. Murata, M. Grutter, W. Stremme, M. De Maziere, N. Jones, D. Smale, I. Morino
Summary: In this study, we validate the formaldehyde vertical column densities (VCDs) measured by OMPS-NPP and OMPS-N20 satellites using ground-based FTIR observations. Both OMPS-NPP and OMPS-N20 products show good agreement with FTIR observations in terms of seasonal and monthly variability. However, biases exist in the satellite products, with positive biases in low concentrations and negative biases in high concentrations.
EARTH AND SPACE SCIENCE
(2023)
Article
Astronomy & Astrophysics
Caroline R. R. Nowlan, Gonzalo Gonzalez Abad, Hyeong-Ahn Kwon, Zolal Ayazpour, Christopher Chan Miller, Kelly Chance, Heesung Chong, Xiong Liu, Ewan O'Sullivan, Huiqun Wang, Lei Zhu, Isabelle De Smedt, Glen Jaross, Colin Seftor, Kang Sun
Summary: This paper presents multi-year formaldehyde (HCHO) data obtained from the OMPS instruments on the Suomi NPP and NOAA-20 satellites. The data were converted into vertical column concentrations and compared with TROPOMI observations. The results show high consistency between the two datasets, with some differences in polluted regions.
EARTH AND SPACE SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Xianda Gong, Jiaoshi Zhang, Betty Croft, Xin Yang, Markus M. Frey, Nora Bergner, Rachel Y. -W. Chang, Jessie M. Creamean, Chongai Kuang, Randall V. Martin, Ananth Ranjithkumar, Arthur J. Sedlacek, Janek Uin, Sascha Willmes, Maria A. Zawadowicz, Jeffrey R. Pierce, Matthew D. Shupe, Julia Schmale, Jian Wang
Summary: The Arctic warms faster than the global average, and aerosols have a significant impact on Arctic climate change. Observations show that blowing snow in the central Arctic produces abundant sea salt aerosols, which increase cloud condensation nuclei concentrations and lead to surface warming.
Article
Multidisciplinary Sciences
Hui Li, Bo Zheng, Philippe Ciais, K. Folkert Boersma, T. Christoph V. W. Riess, Randall V. Martin, Gregoire Broquet, A. Ronald Van Der, Haiyan Li, Chaopeng Hong, Yu Lei, Yawen Kong, Qiang Zhang, Kebin He
Summary: The emergence of the Omicron variant in 2022 has caused a larger decline in China's CO2 emissions compared to the first wave in 2020. Satellite observations indicate a 15% decrease, equivalent to 244.3 million metric tons of CO2, during the 2022 lockdown, hindering China's emissions rebound.
Article
Environmental Sciences
David M. Stieb, Marc Smith-Doiron, Matthew Quick, Tanya Christidis, Guoliang Xi, Rosalin M. Miles, Aaron van Donkelaar, Randall V. Martin, Perry Hystad, Michael Tjepkema
Summary: Recent studies have found inequality in the distribution of air pollution attributable health impacts, but no research has been done on this in Canadian cities. This study evaluated the extent and sources of inequality in air pollution attributable mortality in seven of Canada's largest cities. The findings showed that areas with a higher prevalence of low income and Indigenous identity had significantly higher air pollution attributable mortality. Reducing inequality in air pollution mortality requires addressing disparities in baseline mortality and air pollution exposure.
Article
Environmental Sciences
Haihui Zhu, Randall V. Martin, Betty Croft, Shixian Zhai, Chi Li, Liam Bindle, Jeffrey R. Pierce, Rachel Y. -W. Chang, Bruce E. Anderson, Luke D. Ziemba, Johnathan W. Hair, Richard A. Ferrare, Chris A. Hostetler, Inderjeet Singh, Deepangsu Chatterjee, Jose L. Jimenez, Pedro Campuzano-Jost, Benjamin A. Nault, Jack E. Dibb, Joshua S. Schwarz, Andrew Weinheimer
Summary: This study uses a global chemical transport model to analyze airborne measurements from the United States and South Korea, and proposes a parameterization method for representing aerosol size. This method improves the agreement between the simulation model and ground-measured data.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Nick Gorkavyi, Nickolay Krotkov, Alexander Marshak
Summary: Observing the Earth from the Moon's surface has important scientific advantages, as the Earth's angular diameter is 1.8-2.0 degrees from the Moon and the Moon's libration motion causes the position of the Earth to change in the lunar sky. This paper proposes using the Earth's natural motion as a replacement for scanning mechanism by placing a multi-slit spectrometer on the Moon's surface.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2023)
Article
Environmental Sciences
Chi Li, Randall V. Martin, Ronald C. Cohen, Liam Bindle, Dandan Zhang, Deepangsu Chatterjee, Hongjian Weng, Jintai Lin
Summary: This study investigated the simulation of nitrogen oxides (NOx) over the eastern United States using the high-performance implementation of the GEOS-Chem chemical transport model (GCHP) at different horizontal grid resolutions. The results showed that increasing the grid size led to a decrease in afternoon surface NOx mixing ratios over the Great Lakes region and an increase over the southern states. It was also observed that nighttime titration of ozone by surface nitric oxide (NO) was more efficient at coarser resolutions, resulting in longer NOx lifetimes and higher surface mixing ratios of nitrogen dioxide (NO2) over the Great Lakes region. Additionally, the study found that coarse-resolution simulations generally underestimated surface NO2 over the Great Lakes region and overestimated it over the southern states in summer.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Joanna Joiner, Sergey Marchenko, Zachary Fasnacht, Lok Lamsal, Can Li, Alexander Vasilkov, Nickolay Krotkov
Summary: Nitrogen dioxide (NO2) is an important trace-gas pollutant and climate agent that affects ocean color retrievals. Satellite UV-Vis spectrometers, such as OMI and TROPOMI, have been used to retrieve NO2 column densities, but this study explores the possibility of using lower-spectral-resolution hyperspectral imagers like OCI for NO2 retrieval. Although OCI's spectral resolution is lower, it still captures the small-scale spectral structure caused by NO2 absorption. The study shows that while OCI's NO2 retrievals are limited by instrumental noise, they can still provide valuable information for ocean color retrievals and can be used for downscaling lower-resolution data.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2023)
Article
Geosciences, Multidisciplinary
Vitali E. Fioletov, Chris A. McLinden, Debora Griffin, Ihab Abboud, Nickolay Krotkov, Peter J. T. Leonard, Can Li, Joanna Joiner, Nicolas Theys, Simon Carn
Summary: Measurements of sulfur dioxide (SO2) from three satellite spectrometers, OMI, OMPS, and TROPOMI, were used to update and extend a global catalogue of large SO2 emission sources. The catalogue includes 759 continuously emitting point sources from volcanoes, power plants, smelters, and sources related to the oil and gas industry. The data show a decline in global SO2 emissions between 2005 and 2021, with emissions remaining stable in recent years.
EARTH SYSTEM SCIENCE DATA
(2023)
