It is measured by how much characteristic radiation it allows to pass. The units are Dobson units, indicative of "total column ozone". Total Column Ozone Density, based on absorption of key UV wavelengths through the entire atmosphere on a straight line path. The unit is the Dobson.
Ozone is measured as being present in air, and as being dissolved in water. In air, each molecular bond responds to a wavelength of light. The type and number of atoms on each bond affects the wavelengths the molecule will respond to. Ozone uniquely responds to 254-320nm, which is UV-B (the wavelength that damages DNA and causes cataracts). The absorption / scattering can allow us to determine the concentration of ozone present, via the "Beer Lambert Law". Ozone in water is detectable by way of its "oxidation reduction potential", or using a polarographic membrane sensor, or using a known amount of a compound that changes color when oxidized and letting the unknown amount of ozone get to it. The more the color change, the more ozone is present.
By its ability to absorb characteristic radiation, such as UV-B (245nm is easy as it is one of many wavelengths that Mercury vapor lamps can emit).
Total Column Ozone Density, based on absorption of key UV wavelengths through the entire atmosphere on a straight line path. The unit is the Dobson.
See "How is the ozone layer measured?"
Ozone is present in stratosphere. It is measured in Dobson Units.
The ozone can be measured using various techniques. Ozone balloons are one.
The ozone is monitored using special satellites. They are the ones that keep a continues check on the ozone.
Dobson Unit
The depletion of ozone layer is measured in PPM. Here PPM is called as Parts Per Million.
Ozone layer contains ozone in it. Therefore, it is named so.
Earth has a layer of ozone. It is present as the ozone layer.
Ozone is a layer which protects us. Actually ozone is just a gas, ozone layer is the layer.
the ozone layer is the the part of the atmosphere that screens out harmful radiation from the sun.
The ozone is measured in Dobson Units. It can be controlled by planting more trees.
The depletion of ozone layer is measured in PPM. Here PPM is called as Parts Per Million.
Scientists did study ozone. But the one finding the depletion was Dr. Farman.
Ozone is measured in parts per million. In ozone layer concentration is around 6-8 parts per million.
Ozone layer contains ozone in it. Therefore, it is named so.
The ozone layer in Tagalog is called "tunog ozone."
Ozone layer is formed of ozone. It is a gas.
Earth has a layer of ozone. It is present as the ozone layer.
damage to ozone layer is called ozone depletion. It is thinning of ozone layer.
Ozone is a layer which protects us. Actually ozone is just a gas, ozone layer is the layer.
The layer of gases that surround the atmosphere is ozone. It is present as the ozone layer.
Ozone layer is the layer of ozone. Humans are altering it by CFC's.