How can we detect ozone depletion?
How can we detect ozone depletion?
Lasers are routinely deployed at ground sites and on research aircraft to detect ozone over a distance of many kilometers along the laser light path. A network of ground-based detectors measures ozone by detecting small changes in the amount of the Sun’s UV radiation that reaches Earth’s surface.
How does ozone depletion affect the environment?
The ozone layer acts as a natural filter, absorbing most of the sun’s burning ultraviolet ( UV ) rays. Stratospheric ozone depletion leads to an increase in UV -B that reach the earth’s surface, where it can disrupt biological processes and damage a number of materials.
What are the four effects of ozone depletion?
Effects Of Ozone Layer Depletion Studies demonstrate that an increase in UV-B rays causes a higher risk of skin cancer, plays a major role in malignant melanoma development, sunburns, quick ageing, eye cataracts, blindness and weekend immune system.
Which instrument is used to measure ozone layer?
Dobson spectrophotometer
The instrument, now called a Dobson spectrophotometer, measures the intensity of sunlight at two ultraviolet wavelengths: one that is strongly absorbed by ozone and one that is weakly absorbed.
How is the ozone layer detected?
Ozone spectrophotometers measure the amount of UV light reaching Earth, providing an accurate picture of how much ozone there is in the atmosphere.
What human activities affect the ozone layer?
Human activities cause the emission of halogen source gases that contain chlorine and bromine atoms. These emissions into the atmosphere ultimately lead to stratospheric ozone depletion. The source gases that con- tain only carbon, chlorine, and fluorine are called “chlo- rofluorocarbons,” usually abbreviated as CFCs.
Which of the following is responsible for depletion of ozone layer?
chlorofluorocarbons
Freons are chlorofluorocarbons and are responsible for depletion of ozone layer.
How does ozone layer depletion lead to global warming?
A bigger ozone hole does not cause global warming, but ozone is a greenhouse gas, so its presence has a warming effect. The main climate effect of a bigger ozone hole—that is, less ozone over Antarctica—has been to cool the stratosphere over Antarctica.
Which one of the following is a result of ozone layer depletion?
5. Which one of the following is a result of ozone layer depletion? Explanation: The destruction of the ozone layer causes harm to positive vegetation and to plankton and accordingly affecting nature’s food chains and food webs. This in turn causes an increase in carbon dioxide due to the decrease in vegetation.
What is the Montreal Protocol?
The Montreal Protocol, finalized in 1987, is a global agreement to protect the stratospheric ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS).
Which device can be used to measure ozone in the stratosphere from the ground?
Instruments that are commonly used to measure overhead ozone from the ground are the Dobson spectrophotometer and Light Detection and Ranging (LIDAR). Developed in 1924, the Dobson spectrophotometer is the earliest instrument used to measure ozone, and modern versions continue to provide data.