What causes the Brewer Dobson circulation?
Brewer–Dobson circulation is driven by planetary scale atmospheric waves, namely Rossby waves, with results in westward drag and therefore poleward pumping action to conserve angular momentum.
What is Dobson Brewer circulation?
The Brewer–Dobson circulation (BDC) consists of an upward transport branch across the tropical tropopause in the tropics and downward and poleward transport branches in the extratropics in the two hemispheres [1].
What is the function of stratospheric ozone?
Stratospheric ozone is a naturally-occurring gas that filters the sun’s ultraviolet (UV) radiation. This is typically regarded as ‘good’ ozone since it reduces the harmful effects of ultraviolet (UV-B) radiation. A diminished ozone layer allows more radiation to reach the Earth’s surface.
What are the two types of ozone?
Ozone or “O3” is a colorless gas composed of three atoms of oxygen (O3). There are two types of ozone, both “good” ozone and “bad” ozone.
How is ozone important for us?
Why is Ozone Layer important? Ozone protects the Earth from harmful ultraviolet (UV) rays from the Sun. Without the Ozone layer in the atmosphere, life on Earth would be very difficult. With a weakening of the Ozone Layer shield, humans would be more susceptible to skin cancer, cataracts and impaired immune systems.
What is wrong with ozone?
Ozone can aggravate asthma, and can inflame and damage cells that line your lungs. Ozone may also aggravate chronic lung diseases such as emphysema and bronchitis and reduce the immune system’s ability to fight off bacterial infections in the respiratory system. Lastly, ozone may cause permanent lung damage.
Which is called bad ozone?
The “bad” ozone or ground-level ozone is sourced from human activity. This harmful air pollutant affects people, the environment and is the main ingredient in “smog”.
How is ozone harmful to us?
How is Ozone Harmful? When inhaled, ozone can damage the lungs. Relatively low amounts can cause chest pain, coughing, shortness of breath and throat irritation. Ozone may also worsen chronic respiratory diseases such as asthma and compromise the ability of the body to fight respiratory infections.
What is an unhealthy ozone level?
Good (0-50) No health impacts are expected when air quality is in this range. Moderate (51-100) Unusually sensitive people should consider limiting prolonged outdoor exertion. Unhealthy for. Sensitive Groups. (101-150)
What are the 2 types of ozone?
Where is the bad ozone located?
troposphere
Ozone occurs in two layers of the atmosphere. The layer closest to the Earth’s surface is the troposphere. Here, ground- level or “bad” ozone is an air pollutant that is harmful to breathe and it damages crops, trees and other vegetation.