Which intervention most effectively reduces ground-level pollutant concentrations during a winter temperature inversion?
Enhancing vertical air mixing through artificial turbulence
To determine which intervention most effectively reduces ground-level pollutant concentrations during a winter temperature inversion, let's first understand what a temperature inversion is and how it affects air pollution:
A temperature inversion occurs when a layer of warm air traps cooler air close to the ground. During such an inversion, the vertical mixing of air is limited, causing pollutants to build up in the lower atmosphere, leading to higher concentrations of ground-level pollutants.
Now, let's examine the options provided:
- Increasing surface temperatures near emission sources: While increasing surface temperatures might seem helpful, it does not directly tackle the inversion issue. The warm air needs to be lifted for effective mixing, which this option doesn't guarantee on its own.
- Reducing local wind speed to minimize horizontal dispersion: This approach would likely exacerbate the problem by further limiting the dispersal of pollutants, hence increasing their concentration at ground level.
- Enhancing vertical air mixing through artificial turbulence: This intervention directly addresses the core issue of limited vertical mixing during a temperature inversion. By enhancing vertical air mixing, pollutants can be dispersed upward, breaking the inversion layer and reducing concentrations of pollutants at ground level.
- Elevating emission sources above inversion layers: While this might reduce ground-level concentrations temporarily, it could simply move the pollution to higher altitudes. This does not solve the problem of the inversion but just shifts the problem elsewhere.
The most effective intervention is Enhancing vertical air mixing through artificial turbulence because it addresses the root cause of pollutant accumulation by improving air circulation and breaking the inversion layer.
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Important Questions from Environment Education
Also refers to global warming
EVS is an integration of
Select an incorrect statement:
Persistence of vision in a human eye is
Given below are two Statements
Statement (I): Non formal education processes and programmes should, in the long run, lead to creating awareness, in individual and society of prevailing environmental solutions.
Statement (II): Non formal education is intended for all age groups and sections of society
In the light of the above statements check the most appropriate answer.
