Sentences with phrase «ozone depletion occurs»

(Indirectly, I think it's possible that using radiation management to ameliorate warming might have some indirect effect, because ozone depletion occurs at low temperatures — that's why ozone holes develop in the winter at the poles — and rad / man would imply that we failed to address carbon emissions.

The reason that most ozone depletion occurs around the poles (mainly the Antarctic pole) is really the result of a complex interlay between natural and anthropogenic factors.

Not exact matches

Benca irradiated 18 - inch - tall, bonsai - like pines with UV - B dosages up to 13 times stronger than on Earth today, simulating the effects of ozone depletion caused by immense volcanic eruptions that occurred at the end of the Permian Period.

For instance, ozone depletion in the atmosphere occurs because of chemical reactions of hydrochloric acid on the surface of ice crystals and aerosols in the upper atmosphere.

Such heightened transposon activity — if it is occurring in plants down under — could be a significant consequence of ozone depletion, Walbot says.

Since PSCs are very sensitive to temperature, cold winter vortex conditions often presage a large ozone depletion the following spring (note that polar ozone depletion only occurs in sunlight and so is a spring time phenomena in both hemispheres).

Focusing on the natural world, the Brazilian artist creates works that visualize changes that occur with the passage of time, like erosion, rising sea levels, and the depletion of the ozone layer.

As I noted in the introduction to this post, the SAM trend is partly explained by ozone depletion in the stratosphere, and the most clearly anomalous melt in the James Ross Island core occurs after the late 1970s, about the time the ozone hole appeared.

«Despite the low solar elevations in Antarctica, UV - B radiation doses in late spring during the ozone hole period can be sufficient to induce sunburn, and are about twice as great as those that would have occurred prior to the onset of ozone depletion.

Less intense depletion of ozone occurs above the Arctic and in mid-latitudes of both hemispheres.

The various kinds of evidence examined by the panel suggest that the troposphere actually may have warmed much less rapidly than the surface from 1979 into the late 1990s, due both to natural causes (e.g., the sequence of volcanic eruptions that occurred within this particular 20 - year period) and human activities (e.g., the cooling of the upper part of the troposphere resulting from ozone depletion in the stratosphere).

The trend of greater and greater depletion of global stratospheric ozone observed during the 1980s and 1990s is no longer occurring; however, it is not yet clear whether these recent changes are indicative of ozone recovery.

No atmospheric ozone depletion events were observed at Summit (37); and, consequently, AMDEs are unlikely to occur in central Greenland.

Active atmospheric chemistry has been reported for polar coastal areas: the so - called Atmospheric Mercury Depletion Events (AMDEs), occurring simultaneously with the postsolar sunrise destruction of ozone, can lead to complete depletions of atmospheric GEM during springtime (32).