Regulating oxygen vacancy in ultrathin δ-MnO2 nanosheets with superior activity for gaseous ozone decomposition

2021 ◽  
Author(s):  
Ranran Cao ◽  
Lianxin Li ◽  
Pengyi Zhang ◽  
Lele Gao ◽  
Shaopeng Rong
Keyword(s):  
Oxygen Vacancy ◽  
Human Health ◽  
High Performance ◽  
Environmental Problem ◽  
Ground Level ◽  
The Elderly ◽  
Ozone Decomposition ◽  
Ozone Pollution ◽  
Mno2 Nanosheets ◽  
Ground Level Ozone

Ground-level ozone pollution is an environmental problem worldwide, which is hazardous to human health, especially the elderly, the children and the sensitive. It is a tough challenge to develop high-performance...

Compound heat and ozone pollution events relevant for human health

2021 ◽  
Author(s):  
Elke Hertig ◽  
Ana Russo ◽  
Ricardo Trigo
Keyword(s):  
Climate Change ◽  
Myocardial Infarction ◽  
Human Health ◽  
Heat Waves ◽  
Ground Level ◽  
Future Climate Change ◽  
Ozone Pollution ◽  
Ground Level Ozone ◽  
Ozone Concentrations ◽  
South Europe

<p>Temperature extremes and air pollution pose a significant threat to human health. A specific concern applies to heat events and elevated ground-level ozone concentrations, due to the physical relationships between these variables, the single and combined effects of both variables on human health and the anticipated substantial changes in the scope of climate change.</p><p>The present contribution addresses relationships between air temperature and ground-level ozone, the association of these variables with atmospheric circulation patterns, the anticipated changes under future climate change as well as their association with human morbidity (i.e. myocardial infarction frequencies, Hertig et al. 2019) and mortality. The focus is on two climatically different regions in Europe, i.e., Bavaria (Central Europe) and Portugal (South Europe).</p><p>In general, a strong relationship between air temperature and ozone formation became evident. Due to the non-linear nature of the relationship, higher temperatures usually led to substantially enhanced ozone concentrations. In the scope of climate change, considerable increases of maximum temperatures were assessed for Bavaria until the end of the century. Also, future ozone concentrations were projected to rise (Hertig 2020). With respect to spell-length related extremes (heat waves and/ or ozone pollution waves), heat waves were identified as the most frequent wave type for the two European regions under investigation. Waves were associated with in-situ built-up as well as with advection of air masses. Despite different climate settings, a comparable exposure to heat and ozone waves was found in Central and South Europe. In view of excess mortality, the most severe impacts were always associated with compound heat-ozone waves (Hertig et al. 2020).</p><p>Research was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under project number 408057478.</p><p>Hertig, E., Russo, A., Trigo, R. (2020): Heat and ozone pollution waves in Central and South Europe- characteristics, weather types, and association with mortality. Atmosphere. doi: 10.3390/atmos11121271</p><p>Hertig, E. (2020): Health-relevant ground-level ozone and temperature events under future climate change using the example of Bavaria, Southern Germany. Air Quality, Atmosphere and Health. DOI: https://doi.org/10.1007/s11869-020-00811-z</p><p>Hertig, E., Schneider, A., Peters, A., von Scheidt, W., Kuch, B., Meisinger, Ch. (2019): Association of ground-level ozone, meteorological factors and weather types with daily myocardial infarction frequencies in Augsburg, Southern Germany. Atmos. Environment. DOI: 10.1016/j.atmosenv.2019.116975</p>

scholarly journals Spatial–Temporal Distribution Variation of Ground-Level Ozone in China’s Pearl River Delta Metropolitan Region

2021 ◽  
Vol 18 (3) ◽  
pp. 872
Author(s):  
An Zhang ◽  
Jinhuang Lin ◽  
Wenhui Chen ◽  
Mingshui Lin ◽  
Chengcheng Lei
Keyword(s):  
Ozone Concentration ◽  
Pearl River Delta ◽  
Temporal Distribution ◽  
Ground Level ◽  
Metropolitan Region ◽  
Pearl River ◽  
Ozone Pollution ◽  
Ground Level Ozone ◽  
Ozone Concentrations ◽  
The North

Long-term exposure to ozone pollution will cause severe threats to residents’ physical and mental health. Ground-level ozone is the most severe air pollutant in China’s Pearl River Delta Metropolitan Region (PRD). It is of great significance to accurately reveal the spatial–temporal distribution characteristics of ozone pollution exposure patterns. We used the daily maximum 8-h ozone concentration data from PRD’s 55 air quality monitoring stations in 2015 as input data. We used six models of STK and ordinary kriging (OK) for the simulation of ozone concentration. Then we chose a better ozone pollution prediction model to reveal the ozone exposure characteristics of the PRD in 2015. The results show that the Bilonick model (BM) model had the highest simulation precision for ozone in the six models for spatial–temporal kriging (STK) interpolation, and the STK model’s simulation prediction results are significantly better than the OK model. The annual average ozone concentrations in the PRD during 2015 showed a high spatial variation in the north and east and low in the south and west. Ozone concentrations were relatively high in summer and autumn and low in winter and spring. The center of gravity of ozone concentrations tended to migrate to the north and west before moving to the south and then finally migrating to the east. The ozone’s spatial autocorrelation was significant and showed a significant positive correlation, mainly showing high-high clustering and low-low clustering. The type of clustering undergoes temporal migration and conversion over the four seasons, with spatial autocorrelation during winter the most significant.

Effects of ground-level ozone pollution on yield and economic losses of winter wheat in Henan, China

2021 ◽  
pp. 118654
Author(s):  
Tuanhui Wang ◽  
Lin Zhang ◽  
Shenghui Zhou ◽  
Tianning Zhang ◽  
Shiyan Zhai ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Ground Level ◽  
Economic Losses ◽  
Ozone Pollution ◽  
Ground Level Ozone

scholarly journals Current and future occurrences of health-relevant, compound heat and ozone pollution events in six European ozone-temperature regions 

2021 ◽  
Author(s):  
Sally Jahn ◽  
Elke Hertig
Keyword(s):  
Climate Change ◽  
Air Temperature ◽  
Large Scale ◽  
Coupled Model ◽  
Ground Level ◽  
Future Climate Change ◽  
Ozone Pollution ◽  
Ground Level Ozone ◽  
Ozone Concentrations ◽  
Elevated Ozone

<p>Air pollution and heat events present two major health risks, both already independently posing a significant threat to human health and life. High levels of ground-level ozone (O<sub>3</sub>) and air temperature often coincide due to the underlying physical relationships between both variables. The most severe health outcome is in general associated with the co-occurrence of both hazards (e.g. Hertig et al. 2020), since concurrent elevated levels of temperature and ozone concentrations represent a twofold exposure and can lead to a risk beyond the sum of the individual effects. Consequently, in the current contribution, a compound approach considering both hazards simultaneously as so-called ozone-temperature (o-t-)events is chosen by jointly analyzing elevated ground-level ozone concentrations and air temperature levels in Europe.</p><p>Previous studies already point to the fact that the relationship of underlying synoptic and meteorological drivers with one or both of these health stressors as well as the correlation between both variables vary with the location of sites and seasons (e.g. Otero et al. 2016; Jahn, Hertig 2020). Therefore, a hierarchical clustering analysis is applied to objectively divide the study domain in regions of homogeneous, similar ground-level ozone and temperature characteristics (o-t-regions). Statistical models to assess the synoptic and large-scale meteorological mechanisms which represent main drivers of concurrent o-t-events are developed for each identified o-t-region.</p><p>Compound elevated ozone concentration and air temperature events are expected to become more frequent due to climate change in many parts of Europe (e.g. Jahn, Hertig 2020; Hertig 2020). Statistical projections of potential frequency shifts of compound o-t-events until the end of the twenty-first century are assessed using the output of Earth System Models (ESMs) from the sixth phase of the Coupled Model Intercomparison Project (CMIP6).</p><p><em>Hertig, E. (2020) Health-relevant ground-level ozone and temperature events under future climate change using the example of Bavaria, Southern Germany. Air Qual. Atmos. Health. doi: 10.1007/s11869-020-00811-z</em></p><p><em>Hertig, E., Russo, A., Trigo, R. (2020) Heat and ozone pollution waves in Central and South Europe- characteristics, weather types, and association with mortality. Atmosphere. doi: 10.3390/atmos11121271</em></p><p><em>Jahn, S., Hertig, E. (2020) Modeling and projecting health‐relevant combined ozone and temperature events in present and future Central European climate. Air Qual. Atmos. Health. doi: 10.1007/s11869‐020‐009610</em></p><p><em>Otero N., Sillmann J., Schnell J.L., Rust H.W., Butler T. (2016) Synoptic and meteorological drivers of extreme ozone concentrations over Europe. Environ Res Lett. doi: 10.1088/ 1748-9326/11/2/024005</em></p>

Cost-Effective Control of Ground-Level Ozone Pollution in and around Beijing

2012 ◽  
Vol 10 (2) ◽  
pp. 101-109
Author(s):  
Xie Xuxuan ◽  
Zhang Shiqiu ◽  
Xu Jianhua ◽  
Wu Dan ◽  
Zhu Tong
Keyword(s):  
Cost Effective ◽  
Ground Level ◽  
Effective Control ◽  
Ozone Pollution ◽  
Ground Level Ozone

Surveillance on Emission of Herbal Woods and Cow Dung for Refinement of Atmosphere with Vedic Mantra

2022 ◽  
Vol 13 (1) ◽  
pp. 0-0
Keyword(s):  
Carbon Monoxide ◽  
Air Quality ◽  
Nitrogen Dioxide ◽  
Human Health ◽  
Air Pollutants ◽  
Ground Level ◽  
Cow Dung ◽  
Ground Level Ozone ◽  
Reliable Source ◽  
Pm 10

Earth's atmosphere is made of two gases Nitrogen and Oxygen. Five major air pollutants are Ground level Ozone, Airborne particles or aerosols, Carbon monoxide, Sulfur dioxide, Nitrogen dioxide. Air pollutants risky to human health are Ground level Ozone and Aerosols. They are the main ingredients of Smog . The ground level ozone is formed when sunlight reacts with certain chemical emissions like nitrogen dioxide, carbon monoxide or methane These chemicals are emitted from industrial waste, car exhaust, gasoline vapors etc. Air quality is measured with the Air Quality Index. An AQI under 50 is considered as good air quality however as the AQI number increases , it becomes a concern for human health . Researcher measured the PM level (PM 2.5 and PM 10), temperature, Humidity and other related parameters continuously on different woods in different times in a fixed size room and constrained environment to establish that Yagya is a reliable source to reduce environment pollution .

Health Effect Valuation of Ground-Level Ozone Control in Beijing and its Surrounding Areas, China

2011 ◽  
Vol 356-360 ◽  
pp. 585-589 ◽  
Author(s):  
Wei Wan ◽  
Xu Xuan Xie ◽  
Shi Qiu Zhang
Keyword(s):  
Cost Benefit Analysis ◽  
Health Effect ◽  
Health Benefit ◽  
Cost Benefit ◽  
Ground Level ◽  
Ozone Pollution ◽  
Benefit Analysis ◽  
Ground Level Ozone ◽  
Ozone Control ◽  
Surrounding Areas

Ground-level ozone pollution has attracted attention from academia and public in China recent years. This paper examines the effect and benefit of controlling ground-level ozone pollution in Beijing and its surrounding areas based on health effect valuation and cost-benefit analysis. It compares pollution damage effects under current ozone concentration and six assuming control targets then estimates the health benefit of air quality improvement by cost-benefit analysis. The result shows that, the benefit of ground-level ozone control is considerably huge for the high population density and pollution concentration area which implies the ground-level ozone pollution control policy implementation is necessary and urgent.

scholarly journals Nitrogen management is essential to prevent tropical oil palm plantations from causing ground-level ozone pollution

2009 ◽  
Vol 106 (44) ◽  
pp. 18447-18451 ◽  
Author(s):  
C. N. Hewitt ◽  
A. R. MacKenzie ◽  
P. Di Carlo ◽  
C. F. Di Marco ◽  
J. R. Dorsey ◽  
...  
Keyword(s):  
Oil Palm ◽  
Ground Level ◽  
Nitrogen Management ◽  
Ozone Pollution ◽  
Ground Level Ozone
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