Found 10493 publications. Showing page 211 of 420:
2014
Emissions inventory for Dhaka and Chittagong of pollutants PM10, PM2,5, NOx, SOx, and CO. NILU OR
The Bangladesh Air Pollution Studies (BAPS) project is being prepared for the Clean Air and Sustainability project at the Bangladesh Department of Environment (CASE/DoE). This report summarizes the results from Task 1: Emission inventories. A combined methodology of using bottom-up and top-down scaled input data has been used to populate the emission inventory for Dhaka and Chittagong. Sources of emissions of PM10, PM2.5, NOX, SOX, and CO have been investigated for the sectors Industry (including brick kilns separately), Road Traffic, non-road Traffic, Agriculture, Urban, and Fossil Fuel (energy and gas processing). The emissions inventory has been compiled in the NILU model AirQUIS, which can then process the dispersion modelling of the emissions as needed for Task 2 of this project.
2014
Emissions, dispersion and deposition of SO2 from Nikel and Zapolyarny. A WRD-Chem model study. NILU OR
The WRF-Chem model has been applied to study two specific episodes of pollution from the Nikel and Zapolyarny facilities, the summer episode 2007 and winter 2010/11. Meteorological input data from WRF compare well with data from ECMWF. The model underestimates concentrations of SO2 in specific episodes, a possible explanation for this is that the flue gas plume is levelled out in the model, in addition little is known about the emissions. A budget for the different processes show that chemical loss and wet deposition are most important in summer time, while wet and dry deposition are most important in winter time. WRF-Chem is computational demanding and most suited to study processes and specific episodes.
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This report presents an evaluation of the ambient air pollution concentrations in Norwegian cities and agglomerations in the last 5 years up to 2014. It includes an evaluation criteria to support a possible revision of air pollution zones and presents a detailed evaluation of the existing monitoring network for air quality with respect to different pollution zone distributions. Recommendations for updates in the existing monitoring network to comply with current air quality legislation are provided in the report.
2014
Citi-Sense-MOB. Conceptual services design document. NILU OR
This report gives an overview of the service system design, requirements, specifications and architecture for the main products ¿ Citi-Sense-MOB Citizen Observatory Toolbox (COT), which comprises of a series of applications that support and complement each other. These include the concept for COT, service design concept and methodologies, the COT target groups, and a set of COT (e.g., data, web apps, mobile apps, maps, services, methodologies, etc.).
2014
Dispersion calculations of NO2 emissions from a heating plant at Ranheim. NILU OR
Dispersion calculations have been carried out for emissions from a heating plant at Ranheim. Contribution to NO2-concentrations from the facility will be acceptable with recommended stack dimensions.
2014
Trans-boundary movement of e-waste and the associated contaminants (e.g., polychlorinated biphenyls, halogenated flame retardants, metals) has emerged as an important research topic in the last decade. Several monitoring studies published in the peer-reviewed literature have documented elevated levels of various industrial-use organic contaminants (IUOCs) in the atmosphere near known or suspected e-waste receiving and processing sites in Asia. Surprisingly high concentrations of polychlorinated biphenyls in the atmosphere were also reported offshore of West Africa. Emissions of IUOCs linked to trans-boundary movement of e-waste have implications for chemical fate and exposure at local, regional and global scale. For example, the transfer of e-waste from temperate climates to tropical regions could lead to enhanced emissions simply through temperature-related increases in passive volatilization from open landfill sites. The main objective of this study is to develop emission scenarios for selected IUOCs considering the generation and transport of e-waste and simulate and compare chemical fate and transport using an evaluative modeling approach. All simulations were conducted using BETR-Global 2.0 (https://sites.google.com/site/betrglobal/), a chemical fate model which divides the globe into 288 zones (15o x 15o). This spatial resolution is deemed suitable for assessments at the regional as well as global scale. Breivik et al. (SETAC 2014) present an inventory of the global generation and trans-boundary exports of e-waste towards non-OECD countries, with an emphasis on locations in sub-tropical and tropical regions. This inventory along with the physical-chemical property data of selected IUOCs (e.g., partition coefficients, degradation rate constants) are the key inputs to the model simulations. Model output under various emission scenarios are compared in terms of overall persistence (POV) at the global scale as well as in terms of long-range transport potential (LTRP) at regional and global scale (e.g., atmospheric deposition of IUOCs in remote regions). The model outputs are also used to assess the potential implications for chemical exposure at regional and global scale under the various scenarios.
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