Investigation of the impacts of urban vegetation loss on the ecosystem service of air pollution mitigation in Karaj metropolis, Iran

2020 ◽  
Vol 192 (8) ◽  
Author(s):  
Mir Mehrdad Mirsanjari ◽  
Ardavan Zarandian ◽  
Fatemeh Mohammadyari ◽  
Jurate Suziedelyte Visockiene
Keyword(s):  
Air Pollution ◽  
Ecosystem Service ◽  
Urban Vegetation ◽  
Pollution Mitigation ◽  
Vegetation Loss

Influence of urban vegetation on air pollution and noise exposure – A case study in Gothenburg, Sweden

2017 ◽  
Vol 599-600 ◽  
pp. 1728-1739 ◽  
Author(s):  
Jenny Klingberg ◽  
Malin Broberg ◽  
Bo Strandberg ◽  
Pontus Thorsson ◽  
Håkan Pleijel
Keyword(s):  
Air Pollution ◽  
Noise Exposure ◽  
Urban Vegetation

scholarly journals Numerical simulation of air pollution mitigation by means of photocatalytic coatings in real-world street canyons

2020 ◽  
Vol 186 ◽  
pp. 107348
Author(s):  
Beatrice Pulvirenti ◽  
Sara Baldazzi ◽  
Francesco Barbano ◽  
Erika Brattich ◽  
Silvana Di Sabatino
Keyword(s):  
Numerical Simulation ◽  
Air Pollution ◽  
Real World ◽  
Street Canyons ◽  
Pollution Mitigation

Does urban vegetation mitigate air pollution in northern conditions?

2013 ◽  
Vol 183 ◽  
pp. 104-112 ◽  
Author(s):  
Heikki Setälä ◽  
Viljami Viippola ◽  
Anna-Lea Rantalainen ◽  
Arto Pennanen ◽  
Vesa Yli-Pelkonen
Keyword(s):  
Air Pollution ◽  
Urban Vegetation

scholarly journals Influence of future air pollution mitigation strategies on total aerosol radiative forcing

2008 ◽  
Vol 8 (21) ◽  
pp. 6405-6437 ◽  
Author(s):  
S. Kloster ◽  
F. Dentener ◽  
J. Feichter ◽  
F. Raes ◽  
J. van Aardenne ◽  
...  
Keyword(s):  
Air Pollution ◽  
Radiative Forcing ◽  
Mitigation Strategies ◽  
Radiation Budget ◽  
Anthropogenic Aerosol ◽  
Aerosol Radiative Forcing ◽  
Pollution Mitigation ◽  
Aerosol Forcing ◽  
Future Air Pollution ◽  
Aerosol Radiative

Abstract. We apply different aerosol and aerosol precursor emission scenarios reflecting possible future control strategies for air pollution in the ECHAM5-HAM model, and simulate the resulting effect on the Earth's radiation budget. We use two opposing future mitigation strategies for the year 2030: one in which emission reduction legislation decided in countries throughout the world are effectively implemented (current legislation; CLE 2030) and one in which all technical options for emission reductions are being implemented independent of their cost (maximum feasible reduction; MFR 2030). We consider the direct, semi-direct and indirect radiative effects of aerosols. The total anthropogenic aerosol radiative forcing defined as the difference in the top-of-the-atmosphere radiation between 2000 and pre-industrial times amounts to −2.00 W/m2. In the future this negative global annual mean aerosol radiative forcing will only slightly change (+0.02 W/m2) under the "current legislation" scenario. Regionally, the effects are much larger: e.g. over Eastern Europe radiative forcing would increase by +1.50 W/m2 because of successful aerosol reduction policies, whereas over South Asia it would decrease by −1.10 W/m2 because of further growth of emissions. A "maximum feasible reduction" of aerosols and their precursors would lead to an increase of the global annual mean aerosol radiative forcing by +1.13 W/m2. Hence, in the latter case, the present day negative anthropogenic aerosol forcing could be more than halved by 2030 because of aerosol reduction policies and climate change thereafter will be to a larger extent be controlled by greenhouse gas emissions. We combined these two opposing future mitigation strategies for a number of experiments focusing on different sectors and regions. In addition, we performed sensitivity studies to estimate the importance of future changes in oxidant concentrations and the importance of the aerosol microphysical coupling within the range of expected future changes. For changes in oxidant concentrations caused by future air pollution mitigation, we do not find a significant effect for the global annual mean radiative aerosol forcing. In the extreme case of only abating SO2 or carbonaceous emissions to a maximum feasible extent, we find deviations from additivity for the radiative forcing over anthropogenic source regions up to 10% compared to an experiment abating both at the same time.

scholarly journals Spatio-Temporal Variations of Multiple Primary Air Pollutants Emissions in Beijing of China, 2006–2015

Atmosphere ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 494 ◽  
Author(s):  
Yifeng Xue ◽  
Shihao Zhang ◽  
Zhen Zhou ◽  
Kun Wang ◽  
Kaiyun Liu ◽  
...  
Keyword(s):  
Air Pollution ◽  
Quality Improvement ◽  
Air Quality ◽  
Air Pollutants ◽  
Clean Energy ◽  
Mitigation Measures ◽  
Source Control ◽  
Energy Structure ◽  
Pollution Mitigation ◽  
Air Quality Improvement

Air pollution in Beijing, China has attracted continuous worldwide public attention along with the rapid urbanization of the city. By implementing a set of air pollution mitigation measures, the air quality of Beijing has been gradually improved in recent years. In this study, the intrinsic factors leading to air quality improvement in Beijing are studied via a quantitative evaluation of the temporal and spatial changes in emissions of primary air pollutants over the past ten years. Based on detailed activity levels of each economic sector and a localized database containing source and pollutant specific emission factors, an integrated emissions inventory of primary air pollutants discharged from various sources between 2006 and 2015 is established. With the implementation of phased air pollution mitigation measures, and the Clean Air Action Plan, the original coal-dominated energy structure in Beijing has undergone tremendous changes, resulting in the substantial reduction of multiple air pollutants. The total of emissions of six major atmospheric pollutants (PM10, PM2.5, SO2, NOX, VOCs and NH3) in Beijing decreased by 35% in 2015 compared to 2006—this noticeable decrease was well consistent with the declining trend of ambient concentration of criterion air pollutants (SO2, PM10, PM2.5 and NO2) and air quality improvement, thus showing a good correlation between the emission of air pollutants and the outcome of air quality. SO2 emission declined the most, at about 71.7%, which was related to the vigorous promotion of combustion source control, such as the shutdown of coal-fired facilities and domestic stoves and transition to clean energy, like natural gas or electricity. Emissions of PM decreased considerably (by 48%) due to energy structure optimization, industrial structure adjustments, and end-of-pipe PM source control. In general, NOX, NH3, and VOCs decreased relatively slightly, by 25%, 14%, and 2%, respectively, and accordingly, they represented the limiting factors for improving air quality and the key points of air pollution mitigation in Beijing for the future.

scholarly journals The role of aerosol in altering North Atlantic atmospheric circulation in winter and air-quality feedbacks

2014 ◽  
Vol 14 (16) ◽  
pp. 22477-22506 ◽  
Author(s):  
F. S. R. Pausata ◽  
M. Gaetani ◽  
G. Messori ◽  
S. Kloster ◽  
F. J. Dentener
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Atmospheric Circulation ◽  
North Atlantic ◽  
Radiation Budget ◽  
Atlantic Sector ◽  
Pollution Mitigation ◽  
Near Future ◽  
Future Air Pollution

Abstract. Numerical model scenarios of future climate depict a global increase in temperatures and changing precipitation patterns, driven by increasing greenhouse gas (GHG) concentrations. Aerosol concentrations also play an important role in altering Earth's radiation budget and consequently surface temperature. Here, we use the general circulation aerosol model ECHAM5-HAM, coupled to a mixed layer ocean model, to investigate the impacts of future air pollution mitigation strategies in Europe on winter atmospheric circulation over the North Atlantic. We analyze the extreme case of a maximum feasible end-of-pipe reduction of aerosols in the near future (2030), in combination with increasing GHG concentrations. Our results show a more positive North Atlantic Oscillation (NAO) mean state in the near future, together with a significant eastward shift of the southern centre of action of the sea level pressure (SLP). Moreover, we show a significantly increased blocking frequency over the western Mediterranean. By separating the aerosol and GHG impacts, our study suggests that the aerosol abatement in the near future may be the primary driver of such circulation changes. All these concomitant modifications of the atmospheric circulation over the Euro-Atlantic sector lead to more stagnant weather conditions that favor air pollutant accumulation in the Mediterranean, especially in the western sector. These changes in atmospheric circulation should be included in future air pollution mitigation assessments. Our results suggest that an evaluation of NAO changes in individual climate model simulations will allow an objective assessment of the role of changes in wintertime circulation on future air quality.

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