Sentences with phrase «ozone loss over»

Spring 2011 has seen the largest - ever degree of ozone loss over the northern hemisphere, journalists at the EGU General Assembly in Vienna heard this morning.

The study, led by Simone Tilmes of the National Center for Atmospheric Research (NCAR) in Boulder, Colo., warns that such an approach would delay the recovery of the Antarctic ozone hole by decades and cause significant ozone loss over the Arctic.»

Not exact matches

That is why, over Antarctica, ozone loss doesn't get going in earnest until September, the beginning of the southern spring, when light returns to the pole.

But the Arctic has yet to suffer the deep, widespread and sustained ozone loss seen each year over Antarctica.

This may herald the most severe ozone loss yet over the Arctic region next spring — the time when sunlight returns to the northern hemisphere and triggers the reactions that destroy ozone.

Data from observations in Japan itself show that the greatest loss of ozone — 4.5 per cent over the past 10 years — occurred over the city of Sapporo, which lies on the same latitude as Marseilles.

The increasing depleation of ozone over the Pole regions, Real Climate (6 May 2005) Record Artic Ozone Loss, has at least coincided with decreased temperatures, comment 5, and increased snow falls in the Antartic continents interior, New Scientist (28 May 2005) in Brief, pozone over the Pole regions, Real Climate (6 May 2005) Record Artic Ozone Loss, has at least coincided with decreased temperatures, comment 5, and increased snow falls in the Antartic continents interior, New Scientist (28 May 2005) in Brief, pOzone Loss, has at least coincided with decreased temperatures, comment 5, and increased snow falls in the Antartic continents interior, New Scientist (28 May 2005) in Brief, p. 17.

Temperature during the winter as a whole have generally decreased over the past two decades, likely as a result of climate change, but the sensitivity of ozone loss to the exact timing of March warming events makes ozone depletion a much more variable quantity.

How does this relate generally to stratospheric cooling over recent decades and the apparent positive feedback whereby ozone loss causes further cooling which leads to further ozone loss... Here's a good overview news feature Ozone And Climate Change from the Earth Observatory at ozone loss causes further cooling which leads to further ozone loss... Here's a good overview news feature Ozone And Climate Change from the Earth Observatory at ozone loss... Here's a good overview news feature Ozone And Climate Change from the Earth Observatory at Ozone And Climate Change from the Earth Observatory at NASA.

The ozone depletion over the Arctic this year is neck and neck with the loss experienced in 2005.

The recipe for massive springtime ozone loss in the polar regions, such as the annual ozone hole seen over Antarctica during the past two decades, is fairly simple.

How does this relate generally to stratospheric cooling over recent decades and the apparent positive feedback whereby ozone loss causes further cooling which leads to further ozone loss... Here's a good overview news feature Ozone And Climate Change from the Earth Observatory at ozone loss causes further cooling which leads to further ozone loss... Here's a good overview news feature Ozone And Climate Change from the Earth Observatory at ozone loss... Here's a good overview news feature Ozone And Climate Change from the Earth Observatory at Ozone And Climate Change from the Earth Observatory at NASA.

Large scale ozone losses have occurred above the Arctic this past winter with over 50 % of the ozone destroyed at altitudes around 18 km.

Warm Arctic winters, for example, are degrading the ozone over the Arctic, which leads to greater heat loss.

, lightning related insurance claims, Lyme disease, Malaria, malnutrition, Maple syrup shortage, marine diseases, marine food chain decimated, Meaching (end of the world), megacryometeors, Melanoma, methane burps, melting permafrost, migration, microbes to decompose soil carbon more rapidly, more bad air days, more research needed, mountains break up, mudslides, next ice age, Nile delta damaged, no effect in India, nuclear plants bloom, ocean acidification, outdoor hockey threatened, oyster diseases, ozone loss, ozone repair slowed, ozone rise, pests increase, plankton blooms, plankton loss, plant viruses, polar tours scrapped, psychosocial disturbances, railroad tracks deformed, rainfall increase, rainfall reduction, refugees, release of ancient frozen viruses, resorts disappear, rift on Capitol Hill, rivers raised, rivers dry up, rockfalls, rocky peaks crack apart, Ross river disease, salinity reduction, Salmonella, sea level rise, sex change, ski resorts threatened, smog, snowfall increase, snowfall reduction, societal collapse, songbirds change eating habits, sour grapes, spiders invade Scotland, squid population explosion, spectacular orchids, tectonic plate movement, ticks move northward (Sweden), tides rise, tree beetle attacks, tree foliage increase (UK), tree growth slowed, trees less colourful, trees more colourful, tropics expansion, tsunamis, Venice flooded, volcanic eruptions, walrus pups orphaned, wars over water, water bills double, water supply unreliability, water scarcity (20 % of increase), weeds, West Nile fever, whales move north, wheat yields crushed in Australia, white Christmas dream ends, wildfires, wine — harm to Australian industry, wine industry damage (California), wine industry disaster (US), wine — more English, wine — no more French, wind shift, winters in Britain colder, wolves eat more moose, wolves eat less, workers laid off, World bankruptcy, World in crisis, Yellow fever.

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.

The year with weak wave energy (top) clearly shows greater ozone loss, which extends over a wider area, reaching farther past the edge of Antarctica and closer to the tip of South America.

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.

During this decade, the average ozone loss is roughly equal to losses over Antarctica during the early 1990s.

Nevertheless, even the potential for drastic ozone loss is scary enough to warrant a lot more research — and since nobody knows how soon an ozone hole might open up over New York or Chicago or Miami, it makes sense to get on it.

«What our study shows is that observed water vapor concentrations are high enough and temperatures are low enough over the U.S. in summertime to initiate the chemistry that is known to lead to ozone losses,» said Harvard atmospheric scientist David Wilmouth, one of the paper's co-authors, in an email.

Ozone loss in the stratosphere and the consequent increase in penetration of UV into the upper troposphere tends to reduce the differential between the atmospheric pressure in the stationary high pressure cell East of Chile and the low over Indonesia tending to move the atmosphere towards a constant El Nino orientation.

Cold temperatures in the upper atmosphere and the lingering presence of ozone - destroying pollutants, called chlorofluorocarbons, have set the stage for what could be a record loss in protective ozone over the Arctic this spring.

The top 10 Environmental Issues are Population, CLimate Change, loss of biodiversity, the phosphorus and nitrogen cycle, water, Ocean Acidification, Pollution, Ozone Depletion Layer, Over fishing and Deforestation.It is very difficult to prioritise the top 10 environmental issues facing our planet today.

To date, air affected by the record - breaking ozone loss has hovered over Canada, eastern Russia and Scandinavia but has not extended down to the heavily - populated regions of Germany and central Europe, although this situation could change.

«Although stratospheric ozone losses are expected to stabilize and eventually recover to preindustrial levels over the course of the twenty - first century, these results show that increasing greenhouse gases will continue to intensify the polar vortex throughout the twenty - first century, but that radiative forcing will cause widespread temperature increases over the entire Southern Hemisphere.»

While the results do not show a significant impact on human health, especially considering that most of the ozone loss documented in this study occurs over the northern polar region, they are important scientifically.

That news turned heads because it's the ozone layer over Antarctica that's most prone to ozone loss.

No one had imagined that ozone depletions like the 50 % losses being observed by 1987 over Antarctica were possible so soon.