Sentences with phrase «ozone column»

The percentage of the total overhead ozone column destroyed is shown in Figure 2 for the years in our experiment with strongest and weakest wave energies.

Fingerprints of September healing since 2000 include (i) increases in ozone column amounts, (ii) changes in the vertical profile of ozone concentration, and (iii) decreases in the areal extent of the ozone hole.

«Had the 1987 Montreal Protocol to curb anthropogenic ozone - depleting Chlorofluorocarbons not been implements, global stratospheric models suggest a worldwide average of 67 % reduction in ozone column thickness from 1980 to 2065.

Over the last 50 years satellite and ground - based records over Antarctica show ozone column amounts ranging from 100 to 400 Dobson units, which translates to about 1 millimeter (1/25 inch) to 5 millimeters (1/6 inch) of ozone in a layer if all of the ozone were brought down to the surface.

In the worst years, two - thirds of the Arctic ozone column (the total amount of ozone between the ground and the top of the atmosphere) is destroyed in the most severely depleted regions.

With the possible exception of the polar lower stratosphere, a decrease in temperature reduces ozone depletion leading to higher ozone column amounts and a positive correction to the LLGHG - induced radiative cooling of the stratosphere.

The data basis of observations are total ozone columns measurements from three satellite borne instruments: the European satellite sensors GOME (ERS - 2), SCIAMACHY (ENVISAT), and GOME - 2 (METOP - A) are combined and added up to a continuous time series starting in June 1995.

But what remains is that UVB levels at ground are a function of the total ozone column, and as that column remains very high, there is no need to panic on an hypothetical but inexistant UVB increase.

This year about 40 % of the ozone column above the Arctic has disappeared, breaking the previous record of 30 %.