Measuring Ozone Depletion (1 Viewer)

[Rax]

Ok What is the processes of measuring Ozone depletion or measuring CFC's

I got UV spectrophotmeter as a way of measuring increased UV thus inferring that Ozone layer is getting destroyed but are there any others

 

[serge]

TOMS satellite NASA put up, i think
Total Ozone Mapping Spectrometer

its better cause ground level measurements are
not as accurate and cant map the entire earth

 

[Plebeian]

People should check the Chemistry resources section, there are a lot of good notes there which will answer simple factual questions like these.

Ozone in the atmosphere can be measured by ground based, satellite and in-situ methods to provide info on total column ozone abundance and how it varies with altitude. Ground based measurements of total column ozone have been carried out since 1957 by 2 devices : the Dobson spectrophotometer and the M83 filter ozonometer. Satellite measurement of column ozone has been conducted since the launch of the Numbus-7 Satellite in 1978. The Total Mapping Ozone Spectrometer (TOMS) on this platform has provided the most complete, long-term global data set of total ozone to date and has been used extensively for determining global trends and for conducting related atmospheric research.
The most widely used source of ozone date is the TOMS data set. Several groups around the world have been monitoring CFC levels in the lower atmosphere since the mid-to-late-1970. This data gives concentrations for the various CFC’s and ozone depleting substances at the Earth’s surface. Stratospheric monitoring, on the other hand, focuses on reactive chlorine species, because these chemicals are quickly broken down in the presence of UV radiation.

 

[Rax]

Thanks all
Good luck for tommorrow