Sentences with phrase «northern ozone hole»

If the North Magnetic Pole continues wandering fairly rapidly into Siberia, it might set up a northern ozone hole by attenuating the Rossby waves over the continental land masses rimming the Arctic Ocean.

Still, arctic ozone levels fell during most winters in the 1990s, making researchers worry that a northern ozone hole might appear.

Not exact matches

Similar clouds in the Antarctic, which cause the ozone hole there, have been observed from American spy planes, but the less stable northern clouds have been studied only with balloons and satellites.

This paper explains why the Northern Hemisphere is melting and the Southern Hemisphere retains its glacier in the Ozone Hole.

In a year that saw the first genuine «ozone hole» appear in the Northern Hemisphere, atmospheric scientists say they are shocked to learn that Environment Canada, the country» s environment agency, has decided to drastically reduce its ozone science and monitoring programme.»

Observations made in the late winter and early spring of 2011 reveal ozone loss far outside the range previously observed over the Northern Hemisphere, comparable to some Antarctic ozone holes.

Figure 2: Total column ozone loss relative to pre-ozone hole conditions in the 1970s in percent (left) and total number of molecules (right)(1 DU = 2.69 molecules / cm2) averaged over 2010 - 2019, during September for the Southern Hemisphere and March for the Northern Hemisphere.

The ozone hole that forms in the northern hemisphere, due also to ingress of troposphere NOx rich air into zones where it is normally not found, is brief due to the geography of the distribution of land and sea.

A bigger hole in the ozone layer over Northern Hemisphere countries could mean more UV damage to humans, animals and plants.

The main reasons, for my doubts, being that CFCs are heavier than air and are not likely to streak off to the Stratosphere and that they are mainly produced in the Northern Hemisphere by us humans and taking the Hadley, Ferrell and Polar Cells into account the North Pole is by far a more likely candidate for a hole in the Ozone.

A publication by the conservative think tank, The Cato Institute, argued that NASA's 1992 warnings of a potential ozone hole opening up over the Northern Hemisphere «were exquisitely timed to bolster the agency's budget requests» (Bailey, 1993).

In an idealized three - dimensional numerical simulation of the Northern Hemisphere winter stratosphere, doubling the CO2 concentration leads to the formation of an Arctic ozone hole comparable to that observed over Antarctica, with nearly 100 % local depletion of lower - stratospheric ozone.