How does Ozone O3 affect human health? There are few epidemiological studies on the chronic effects of ozone on human health.
The Moon hovering over Earth's atmosphere. NASA Earth Observatory Human activities cause ozone depletion and global warming Ozone O3 depletion does not cause global warming, but both of these environmental problems have a common cause: Global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.
Carbon dioxide spreads around the planet like a blanket, and is one of the main gases responsible for the absorption of infrared radiation felt as heatwhich comprises the bulk of solar energy. Ozone depletion occurs when chlorofluorocarbons CFCs and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere see details below.
Ozone sits in the upper atmosphere and absorbs ultraviolet radiaton, another type of solar energy that's harmful to humans, animals and plants. CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.
How ozone works How ozone is distributed in the atmosphere. NOAA The sun emits electromagnetic radiation at different wavelengths, meaning energy at different intensities. The atmosphere acts like a multi-layer shield that protects Earth from dangerous solar radiation.
Ozone is found in two different parts of our atmosphere. It is found in the lower atmosphere troposphere and has nothing to do with the "ozone hole. The stratospheric ozone layer absorbs ultraviolet UV radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms.
UV rays cannot be seen or felt, but they are very powerful and change the chemical structure of molecules. UV radiation plays a small role in global warming because its quantity is not enough to cause the excess heat trapped in the atmosphere. UV radiation represents a small percentage of the energy from the sun, and is not highly absorbed or scattered in the atmosphere—especially when compared with other wavelengths, like infrared.
But, ozone depletion is also concerning because it directly impacts the health of humans, and other living organisms. The ozone hole The ozone hole. People, plants, and animals living under the ozone hole are harmed by the solar radiation now reaching the Earth's surface—where it causes health problems, from eye damage to skin cancer.
Stratospheric ozone is constantly produced by the action of the sun's ultraviolet radiation on oxygen molecules known as photochemical reactions. Although ozone is created primarily at tropical latitudes, large-scale air circulation patterns in the lower stratosphere move ozone toward the poles, where its concentration builds up.
In addition to this global motion, strong winter polar vortices are also important to concentrating ozone at the poles. During the continuously dark polar winter, the air inside the polar vortices becomes extremely cold, a necessary condition for polar stratospheric cloud formation.
Polar stratospheric clouds create the conditions for drastic ozone destruction, providing a surface for chlorine to change into ozone-destroying form. They generally last until the sun comes up in the spring. NASA In the s, scientists discovered that the ozone layer was thinning in the lower stratosphere, with particularly dramatic ozone loss—known as the "ozone hole"—in the Antarctic spring September and October.
These chemicals can remain in the atmosphere for decades to over a century. At the poles, CFCs attach to ice particles in clouds. When the sun comes out again in the polar spring, the ice particles melt, releasing the ozone-depleting molecules from the ice particle surfaces.
Once released, these ozone-destroying molecules do their dirty work, breaking apart the molecular bonds in UV radiation-absorbing ozone. The Montreal Protocol Anniversary poster of the Vienna Convention for the Protection of the Ozone Layerthe first international cooperation effort to protect the ozone layer.
United Nations Environmental Program. CFCs were commonly found in refrigerants, solvents, propellants, and foam-blowing agents before the Montreal Protocol was agreed on in the s— an international commitment to phase out ozone-depleting chemicals that was universally ratified by all countries that participate in the UN.
The Montreal Protocol set an important precedent but more needs to be done. It appears unlikely that the decrease in ozone-depleting substances alone will lead to the recovery of the stratospheric ozone layer to its pre concentration levels because of the competing and uncertain effects of further climate change.
In a worrying development, after an extremely cold winter in earlyfor the first time the ozone reduction in the Arctic was comparable to that in the Antarctic. Stratospheric ozone also has natural processes that remove it from the atmosphere.
Tiny sulfate particles aerosols blasted into the stratosphere by the volcanic eruption of Mount Pinatubo in caused measurable decreases in ozone for several years following the eruptions.
Does global warming have an impact on the stratospheric ozone layer?Ozone Depletion & Global Warming. environmental treaties not only fails to internalize the new scientific evidence demonstrating the correlation between ozone depletion and global warming but also leads to ineffective, discordant policymaking that does not adequately protect life on earth against these synergistic atmospheric threats.
The Correlation Between the OZone Layer and Human Medical Problems PAGES 2.
WORDS 1, View Full Essay. More essays like this: human medical problems, loss of ozone, blocking the uv light. Not sure what I'd do without @Kibin - Alfredo Alvarez, student @ Miami University. Exactly what I needed. It was difficult to separate the effect from ozone and particles, since a similar association was obtained with particles and correlation between particles and ozone was high (9).
The ACS cohort study (13) did not find any association of long-term O 3 exposure and lung cancer or total mortality.
Ground level or “bad” ozone is a human health irritant and component of smog. It is found in the lower atmosphere (troposphere) and has nothing to do with the "ozone hole." High level or “good” ozone occurs in the stratosphere and accounts for the vast majority of atmospheric ozone.
High density of the ozone will influence the human health and The data used to analyse the correlation between the ozone concentration and atmosphere characteristics are and the correlation of hidden layer and the output can be calculated as:), j jj y v q y E (9).
depletion and its adverse effects on human health. 2. Ozone Layer The ozone layer is basically naturally occurring gas in the region of stratosphere where ozone particles are ac-cumulated . Ozone layer is also naturally broken down but there is a balance between its formation and natu-ral depletion.