The amount of ozone above a location on the Earth varies naturally with latitude, season, and from day-to-day. Under normal circumstances, the ozone layer is thickest over the poles and thinnest around the equator.
Where is the ozone layer the thinnest?
The ozone layer is thinnest near the poles .
What layer has the highest ozone?
Most atmospheric ozone is concentrated in a layer in the stratosphere , about 9 to 18 miles (15 to 30 km) above the Earth’s surface (see the figure below). Ozone is a molecule that contains three oxygen atoms.
What is the thickness of the ozone layer?
Over the Earth’s surface, the ozone layer’s average thickness is about 300 Dobson Units or a layer that is 3 millimeters thick . Ozone in the atmosphere isn’t all packed into a single layer at a certain altitude above the Earth’s surface; it’s dispersed.
Is a thick ozone layer good?
GOOD UP HIGH:
The ozone layer in the stratosphere occurs more than 10 miles above the surface of the earth. This thin, high altitude, shield protects the earth from the sun’s ultraviolet rays. The ozone molecules block many of the harmful rays. The thicker the ozone layer, the greater the protection .
Why is there no ozone layer in Australia?
The stratospheric ozone layer absorbs the biologically damaging wavelengths of ultraviolet (UV) rays but in the 1970s, Australia’s ozone layer was severely thinned as a consequence of heavy use of ozone-depleting , substances such as chloroflurocarbons (CFCs) and hydro-chloroflurocarbons (HCFCs).
Which country has no ozone layer?
Antarctica , where ozone depletion has been most severe due to very low temperatures is expected to recover much more slowly. It’s projected that Antarctic ozone concentrations will only begin to approach 1960 levels by the end of the century.
Which is the most thinnest layer?
* Inner core
It is the thinnest layer of the Earth. *The crust is 5-35km thick beneath the land and 1-8km thick beneath the oceans.
What are the 7 layers of earth?
If we subdivide the Earth based on rheology, we see the lithosphere, asthenosphere, mesosphere, outer core, and inner core . However, if we differentiate the layers based on chemical variations, we lump the layers into crust, mantle, outer core, and inner core.
What causes the ozone hole?
The ozone hole has developed because people have polluted the atmosphere with chemicals containing chlorine and bromine . The primary chemicals involved are chlorofluorocarbons (CFCs for short), halons, and carbon tetrachloride. ... Once released from CFCs, chlorine (Cl) then reacts with ozone (O3) to form ClO and O2.
Is there still a hole in the ozone layer 2020?
The 2020 Antarctic ozone hole grew rapidly from mid-August and peaked at around 24.8 million square kilometres on 20 September 2020, spreading over most of the Antarctic continent. ... There is still enough ozone depleting substances in the atmosphere to cause ozone depletion on an annual basis,” said Dr Tarasova.
Who discovered ozone hole?
The discovery of the Ozone Hole was first announced in a paper by British Antarctic Survey’s Joe Farman, Brian Gardiner and Jonathan Shanklin , which appeared in the journal Nature in May 1985.
How thick is the ozone layer 2021?
If you were to take all the ozone in a column of air stretching from the surface of the earth to space, and bring all that ozone to standard temperature (0 °Celsius) and pressure (1013.25 millibars, or one atmosphere, or “atm”), the column would be about 0.3 centimeters thick . Thus, the total ozone would be 0.3 atm-cm.
What does ozone smell like?
Here are some of the ways the smell of ozone is described:
Like a burning wire . Like chlorine . A “clean” smell . Sweet and pungent .
How can you tell if you are being affected by ozone?
People exposed to elevated levels of ozone may experience a variety of symptoms. The most common symptom is a feeling of irritation in the eyes, nose and throat . Some people may also experience respiratory or heart symptoms such as shortness of breath, chest pain, and wheezing.
What happens if the ozone layer is destroyed?
radiation. A diminished ozone layer allows more UV radiation to reach the Earth’s surface . For people, overexposure to UV rays can lead to skin cancer, cataracts, and weakened immune systems. Increased UV can also lead to reduced crop yield and disruptions in the marine food chain.
