What are the effects of ozone on the environment?
Ozone exposure reduces the overall productivity of plants, damaging cells and causing destruction of leaf tissue. As a result, ozone exposure reduces the plants’ ability to photosynthesize and produce their own food.
How does tropospheric ozone affect plants?
Ozone damages plants by entering leaf openings called stomata and oxidizing (burning) plant tissue during respiration. This damages the plant leaves and causes reduced survival.
Is tropospheric ozone good or bad?
In the troposphere, near the Earth’s surface, human activities lead to ozone concentrations several times higher than the natural background level. Too much of this ground-level ozone is ‘bad’ as it is harmful to breathe and also damages vegetation.
How does elevated tropospheric ozone affect human health?
Make it more difficult to breathe deeply and vigorously and cause pain when taking a deep breath. Inflame and damage the airways. Make the lungs more susceptible to infection. Aggravate lung diseases such as asthma, emphysema, and chronic bronchitis.
What causes tropospheric ozone?
Tropospheric, or ground level ozone, is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC).
What is ozone in the troposphere?
Tropospheric ozone is formed by the interaction of sunlight, particularly ultraviolet light, with hydrocarbons and nitrogen oxides, which are emitted by automobile tailpipes and smokestacks. In urban areas, high ozone levels usually occur during warm summer months.
What are the effects of ozone depletion on plants and animals?
Scientists have demonstrated a direct reduction in phytoplankton production due to ozone depletion-related increases in UVB. UVB radiation has been found to cause damage to early developmental stages of fish, shrimp, crab, amphibians, and other marine animals.
What creates tropospheric ozone?
Why Tropospheric ozone is considered as pollutant?
Photochemical and chemical reactions involving ozone drive many of the chemical processes that occur in the troposphere by day and by night. At abnormally high concentrations (the largest source being emissions from combustion of fossil fuels), it is a pollutant, and a constituent of smog.
What is tropospheric pollution?
Tropospheric pollution is caused by gaseous air pollutants as well as particulate pollutants. Among the gaseous air pollutants, oxides of sulphur (SOx), oxides of nitrogen (NOx) and carbon monoxide play an important role towards pollution.
Why is ground-level ozone tropospheric hazardous?
It can lead to worse conditions like damaged airways, chronic bronchitis, asthma, and emphysema. Even if symptoms have disappeared, ozone can continue to damage the lungs. Ground-level ozone can also damage vegetation and ecosystems. The pollutant can cause mass die-off in crops, reducing growth and increasing disease.
What is the effect that ozone has in the troposphere?
– gasoline in our cars and trucks, – jet fuel in our planes, – coal in our factories or powerplants, – trees to clear the land for farming
Is ozone good or bad in the trophosphere?
“Bad” ozone is found in the troposphere, the layer nearest the ground. Tropospheric ozone is a harmful pollutant which forms when sunlight alters various chemicals emitted by humans. “Good” ozone forms in the stratosphere, the next higher layer where some jet planes fly. Why is ozone bad for air quality?
Is the ozone found in the trosphere bad for US?
Tropospheric Ozone causes one of the many undesirable properties of photochemial smog. Human health problems like chest constrictions and irritation of mucous membrane and Cracking of rubber and damage to vegetation are some problems due to ozone. Hence it’s called bad Ozone in troposphere. However, it doesn’t cause eye irritation.
Do hydrofluorocarbons destroy stratospheric ozone?
“Ozone depletion — Man-made compounds such as chlorofluorocarbons (CFCs), hydrofluorocarbons (HCFCs) and halons destroy ozone in the upper atmosphere (stratosphere). Decreased concentration of stratospheric ozone allows increased amounts of UV-B to reach the earth’s surface.”