urban air Articles
-
The OFIS model: an efficient tool for assessing ozone exposure and evaluating air pollution abatement strategies
The Ozone Fine Structure (OFIS) model describes transport and chemical transformation processes in an urban plume at very low computational effort. This newly developed Eulerian model may be used for calculating ozone levels for individual situations as well as for deriving ozone exceedance statistics based on large-scale meteorological and long-range transport information over a longer time ...
-
Using a calculation model to prevent serious air pollution from traffic
The municipality of Utrecht has ten years of experience with exceeding the pollution limit values for NO2 and benzene, and offering advice for traffic plans on the effects of air pollution. Utrecht promotes prevention and integration of environmental issues in traffic plans and town planning. Utrecht has widened the use of the Dutch air pollution model for traffic (CAR) to prevent new exceeding ...
-
An air quality modelling system for a medium-sized town: a case study in Estonia
The air pollution modelling system used in Tartu (population 101,000) is aimed at examining the pollution levels in different meteorological conditions, and determining optimal traffic schemes and strategic development plans for the city. The system consists of: (i) a Gaussian plume model AEROPOL, and (ii) a database on sources of NOx2Keywords: AEROPOL model, air pollution modelling, air ...
-
Evaluation of AirGIS: a GIS–based air pollution and human exposure modelling system
This study describes in brief the latest extensions of the Danish Geographic Information System (GIS)–based air pollution and human exposure modelling system (AirGIS), which has been developed in Denmark since 2001 and gives results of an evaluation with measured air pollution data. The system shows, in general, a good performance for both long–term averages (annual and monthly averages), ...
-
Research Note: Air pollution challenges and solutions for China's urban transportation development
China has experienced dramatic urbanisation and motorisation in the past 20 years. The phenomenal rise in the vehicle population in major cities has resulted in increased air pollution, traffic congestion and other 'wicked problems'. The Chinese government at all levels has made significant effort to control motor vehicle emissions, but vehicle population growth far outpaces their efforts, ...
-
China’s response to air pollution poses threat to water
Record-setting levels of smog this week shut down Harbin, a city of 11 million people in northeast China. Officials blamed increased coal consumption during the first days of winter heating, underscoring the urgency of the China State Council’s recently announced initiative to address persistent smog in major cities. But while the Air Pollution Control Action Plan has ambitious ...
-
Pollution abatement for improving air quality of Tangshan municipality, China: a perspective of urban-airshed carrying-capacity concept
This paper presents a perspective of Urban-Airshed Carrying-Capacity (UACC) concept for air pollution abatement in Tangshan Municipality, China. A 3D Multi-Box Air Quality Prediction (3DMBAQP) model was developed for predicting daily average SO2, TSP and PM10 concentrations in each sub-box of different municipal Function Zones (FZs). A 6-step procedure was designed to determine the UACC levels ...
-
Air Quality Index – Importance of AQI
Clean air is the basic amenity when it comes to healthy living for mankind. Today poor air quality is one of the main reasons for several acute health diseases. It is essential to know the air quality of your locality, city, and nation to assess its impact on your health. Air quality is an outcome of the complex interaction of several factors involving the chemical reactions, meteorological ...
-
Learning from Experience: An Analysis of Clean Air Policies In The United States Since 1970
This paper could have been called, “What Has Worked Well and What Ideas Are Worth Copying.” It summarizes some of the unique elements of the U.S. clean air program, provides an evaluation of their effectiveness, and suggests some ideas for improving the program. If there is any lesson to be learned from the U.S. experience, it is that one must act to clean up the atmosphere. Studying air ...
-
Air quality in Europe — 2012 report
'Air pollution is bad for our health. It reduces human life expectancy by more than eight months on average and by more than two years in the most polluted cities and regions. Member States must comply with EU air quality standards quickly and reduce air pollutant emissions,' Janez Potočnik, EU Commissioner for the Environment (EU, 2010a). Emissions of air pollutants derive from almost all ...
-
City Of North Bay Uses Condition Assessment On Critical Force Main To Implement Asset Management Plan
On one hand, it may seem like a waste of capital dollars if you perform a pipeline condition assessment and the final analysis turns up no leaks. Alternatively, you can also look at the no-leak report as a good news validation story, especially when using the information to help establish an asset management plan. Such was the case for a city of 51,000 situated between the shores of lovely Lake ...
-
Evaluation of air pollution, local meteorology and urban public health
The relationship between meteorological conditions and air pollution was assessed as a plausible explanation for respiratory health problems in Newark, New Jersey on the US east coast. Pollutants in both particle (PM2.5 and PM10) and gas phase (O3) were collected and analysed. We find that PM2.5 concentrations decreased by -30.8% (95% CI: -43.2%, -15.8%) when the prevailing westerly wind speeds ...
-
How to improve air quality in a city: from measurement to action
Improving ambient air quality is core to the mission of local decision makers: it is both a public health and environmental issue. The challenge is quite a tall order: outdoor air pollution causes millions of premature death worldwide, and in 2021, 91% of the world population is living in places where the World Health Organization (WHO) air quality guidelines levels are not met1. Finding ways to ...
By Ecomesure
-
Air pollution monitoring: a solution for cost effective measurements - Case study
Air pollution is one of the main environmental problems to be addressed by cities worldwide. In order to foster sustainable development and mitigate climate change, it is therefore important to provide national and regional authorities with appropriate measures to reduce criteria pollutants (PM 10, PM2.5, O3, CO, SO2 and NOx) concentrations in ambient air. Many cities are not able of meeting ...
By ENVEA
-
Relation between ozone levels and NOx and VOC emissions in the Sao Paulo Metropolitan Area for an episode of August, 1998
At present, major efforts in air pollution control for urban areas are oriented to reduce ozone levels to below standards. Models are a useful tool for air quality assessment and they can help to select the best strategy plan to reduce ozone levels in a polluted area. Like other large cities in the world, Sao Paulo Metropolitan Area (SPMA) has registered high levels of ozone and particulate ...
-
Industrial ecology as 'best available technique': a case study of the Italian Industrial District of Murano
This paper describes an attempt to revitalise a declining urban industrial area in the Venetian Lagoon in accordance with environmental regulations. Among the revitalisation initiatives, the environmental ones were defined through the discussion and signing of a voluntary agreement by all stakeholders. This agreement contained new and more stringent limits than those set out by environmental ...
-
Working principle and application of NO2 gas sensor
A nitrogen dioxide gas sensor is an electronic device used to detect the presence of nitrogen dioxide (NO2) gas in the environment. Nitrogen dioxide is a highly toxic gas that can cause a range of health problems when inhaled, including breathing problems, lung damage and even death. NO2 gas sensors are used in a variety of applications, including air quality monitoring, environmental monitoring ...
-
Besides Polyethylene Geomembrane, What is the Anti-seepage Material of the Landfill?
With the rapid development of my country’s social economy and the acceleration of the process of urbanization and industrialization, the resulting air pollution, solid waste pollution, and the generation of large amounts of domestic garbage have brought tremendous pressure to environmental protection. Especially with the continuous expansion of major cities, the urban population has ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you