Air pollution is caused by human activities and affects health. As an imminent risk to the inhabitants of Mexico City's Metropolitan Area, both environmental and socio-cultural aspects must be taken into account. Because of the psychological dimensions' relevance as predecessors of environmental behaviour, the aim of this study is to describe air pollution's perception, causal attribution and their relation. Results show differences by age, education, location and awareness. The use of cars and of public transport is attributed to behavioural characteristics, while household energy saving and car maintenance are attributed to personal factors. The perception of causes and effects points out energy saving as attributed to personal factors. To attribute car use to circumstances leads to explain the use of public transport to personal factors. Identifying these characteristics will allow policy makers to design tailored informational campaigns, address specific necessities and intervene more effectively.
The obtained concentrations of mercury from a bigger coal-fired plant in Mexico, through the application of the CALPUFF dispersion model by the mercury emissions, are below the level recommended according to the US Department of Health and Human Services and Integrated Risk Information System. These results provide evidence of important progress in the planning and installation to the future of monitoring mercury stations in the area of interest.
Indicators of environmental policies in force in Mexico, fossil fuels will continue to be used in industrial sectors, especially marine fuels, such as marine diesel oil, in port systems for some time. Considering this, we have evaluated several methods corresponding to a top-down system for determining fuel consumption and sulfur dioxide atmospheric emissions for the port of Veracruz in 2020 by type of ship on a daily resolution, considering a sulfur content of 0.5% mass by mass in marine fuel. After analyzing seven methods for determining sulfur dioxide atmospheric emission levels, Goldsworthy’s method was found to be the best option to characterize this port. The port system has two maritime zones, one of which is in expansion, which represented 55.66% of fuel consumption and 23.05% of atmospheric emissions according to the typology of vessels. We found that higher fuel consumption corresponded to container vessels, and tanker vessels represented higher atmospheric emission levels in the berthing position. The main differences that we found in the analysis of the seven methods of the top-down system corresponded to the load factor parameter, main and auxiliary engine power, and estimation of fuel consumption by type of vessel.
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