Many elected officials and residents upriver oppose dredging, but some business owners who rely on boating and tourism are eager to see the pollution removed.
The amount of pollution removed by the urban tree canopy (McPherson et al. 1997; Nowak 2007; Nowak et al. 2000) may be too small to cause meaningful differences in air pollution exposure among New York City residents, particularly given spatial exposure gradients attributable to emissions from vehicles and other urban sources (Gromke 2011).
To obtain estimates of the regional background contribution, we modified an approach developed to provide population-weighted daily averages of ambient pollution concentrations (Ivy et al. 2008) to provide spatially resolved hourly estimates of regional background pollution by removing local-source impacts modeled by hour of day and day of week.
A similar computer model developed in the late 1990's demonstrated that under specific sea and wind conditions, burning the oil spilled from a tanker caused less environmental damage, despite the smoke and air pollution, than removing it after it has washed ashore.
Ammonia helps neutralize sulfuric acid and other acids in air pollution, so removing it from southern California skies could raise the risk of acid rain.
The budget also proposes halving the funding for enforcing the Clean Air Act, which aims at reducing air pollution, and removing funding completely for the Clean Power Plan (more on that below).
Examples given in respect of work to reduce other pressures focused particularly on measures to improve water quality, for example, by reducing pollution and removing sediment.
This will improve driver, passenger and pedestrian safety, reduce congestion, pollution and remove stress for car users.
For instance, reducing the world's dependence on coal and other dirty fuels will cut air pollution and remove a key source of strain on healthcare systems.
It's all then given a hard-headed financial value based on the carbon they store, the air pollution they remove, the rainwater they hold (allowing it to be re-evaporated by the sun rather than disappearing into drains and sewers) and how they ameliorate extreme temperatures.
