Sentences with phrase «ozone hole occurred»

Volcanic eruptions have episodically interfered with healing, particularly during 2015, when a record October ozone hole occurred after the Calbuco eruption.»

Records in depth and size haven't occurred during the same years (the largest ozone hole occurred in 2006), but the long - term trend in both characteristics is consistent: from 1980 through the early 1990s, the hole rapidly grew in size and depth.

This year, scientists recorded the minimum thickness of the ozone layer at 101 Dobson units on October 4, 2015, as compared to 250 - 350 Dobson units during the 1960s, before the Antarctic ozone hole occurred.

Not exact matches

His model suggests that the Antarctic ozone hole should stay about the same for the next decade or so, and then rapid recovery should begin to occur after about 2015.

Without the Montreal Protocol, the new study reveals that a very large ozone hole over the Arctic would have occurred during that cold winter and smaller Arctic ozone holes would have become a regular occurrence.

The study had also discovered that the largest ozone hole on record, which occurred in 2015, was due to the eruption of Chile's Calbuco volcano.

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.

The Antarctic ice increase is occurring in a limited region near the Ross Sea, and is related to the ozone hole through a fairly complicated change in atmospheric dynamics.

Since its emergence in the 1980s, the Antarctic ozone hole, the near - complete loss of lower - stratospheric ozone, has occurred every year.

Massive ozone holes and methane releases are occurring.

Without the Montreal Protocol, the new study reveals that a very large ozone hole over the Arctic would have occurred during that cold winter and smaller Arctic ozone holes would have become a regular occurrence.

«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.

The very particular nature of the circulation of the air above Antarctica dictates that an ozone hole will always occur during the final warming of the stratosphere between August and December.

Such large ozone hole events may still occur in future years, as projections indicate that the recovery will take decades before they disappear entirely by 2055 - 2065.

«For the first time, sufficient loss occurred to reasonably be described as an Arctic ozone hole,» write researchers in an article released Oct. 2 by the journal Nature.

A highlight is Baliunas» confident assertion that «the ozone hole can not occur in the Arctic» — a claim that stood up for about three years.

The CFC ozone hole only occurs in the polar spring, after the dark night is over.

Models suggest that both the loss of ozone (the ozone hole that occurs in September / October every year) and increases in greenhouse gases lead to an increase in frequency of this climate pattern.

A good example is the consensus of chemistry models that projected a slow decline in stratospheric ozone levels in the 1980s, but did not predict the emergence of the Antarctic ozone hole because they all lacked the equations that describe the chemistry that occurs on the surface of ice crystals in cold polar vortex conditions — an «unknown unknown» of the time.

A new study led by Columbia University researchers has found that the closing of the ozone hole, which is projected to occur sometime in the second half of the 21st century, may significantly affect climate change in the Southern Hemisphere, and therefore, the global climate.

(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.