Ozone Depletion And Climate Change Pdf

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In May , the department hosted a seminar featuring three prominent Australian scientists exploring the linkages between ozone depletion and climate change. The seminar will be repeated in Melbourne later in the year. This animation of the Antarctic Ozone hole shows its formation starting in July and its dissolution in December At this time, the major determinants of the size and depth of the ozone hole are the presence of ozone depleting substances in the atmosphere, and the surrounding climate, which if disrupted, may also disrupt the formation of the ozone hole. Skip to main content.

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We summarise advances in our knowledge of how UV-B radiation — nm together with other climate change factors interact in their influence on terrestrial organisms and ecosystems. Materials used in the exterior of buildings and in construction are routinely exposed to solar UV radiation. Especially in the case of wood and plastic building materials, the service life is determined by their weather-induced deterioration. Combined effects of anthropogenic changes in the environmental condition in marine ecosystems, including UV, CO 2 and temperature. Percentage changes in the UV Index UVI for relative to due to changes in ozone left and aerosols right only.

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Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Introduction Two important climatic issues-stratospheric ozone depletion and greenhouse gas increase-and the apparent connection between them led to the holding of this symposium. Theory predicts that ozone depletion should be occurring as a result of chIorofluorocarbons and haloes in the stratosphere. Recent measurements confirm that such depletion is taking place on a global scale and is especially pro- nounced in the antarctic stratosphere. Global tropospheric warming due to increasing greenhouse gases has been an important climatic issue for many years, and several symposia and workshops have pre- viously been held on this topic.

The atmosphere displays modes of variability whose structures exhibit a strong longitudinally symmetric annular component that extends from the surface to the stratosphere in middle and high latitudes of both hemispheres. The pattern of climate trends during the past few decades is marked by rapid cooling and ozone depletion in the polar lower stratosphere of both hemispheres, coupled with an increasing strength of the wintertime westerly polar vortex and a poleward shift of the westerly wind belt at the earth's surface. Annular modes of variability are fundamentally a result of internal dynamical feedbacks within the climate system, and as such can show a large response to rather modest external forcing. The dynamics and thermodynamics of these modes are such that strong synergistic interactions between stratospheric ozone depletion and greenhouse warming are possible. These interactions may be responsible for the pronounced changes in tropospheric and stratospheric climate observed during the past few decades.

Why do I care? The ozone layer protects us from excessive UV rays that contribute to skin cancer and other health problems. Figure A. Ozone layer within stratosphere contains highest concentration of ozone. In big cities during the summertime, air quality at the surface can be an issue when ozone and other gases increase to dangerous levels.


There are strong interactions between ozone depletion and changes in climate induced by increasing greenhouse gases (GHGs). Ozone.


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Chemicals discharged into the air that have a direct impact on the environment are called primary pollutants. These primary pollutants sometimes react with other chemicals in the air to produce secondary pollutants. CFC molecules are extremely stable, and they do not dissolve in rain. CFCs were used by industry as refrigerants, degreasing solvents, and propellants. When incoming energy from the sun is absorbed, Earth warms.

She had just been looking at the record of average surface temperatures of the Earth. The year was the warmest since reliable temperature records have been kept, and the twentieth year in a row in which the average global surface temperature was higher than the year average.

Air Information Resource

Do something for our planet, print this page only if needed. Even a small action can make an enormous difference when millions of people do it! Skip to content. Skip to navigation. If you have forgotten your password, we can send you a new one. Many aerosol propellents contained CFCs before international agreements limited their use.

Ведь пилот может радировать Стратмору. Усмехнувшись, Беккер еще раз посмотрелся в зеркало и поправил узел галстука. Он уже собрался идти, как что-то в зеркале бросилось ему в. Он повернулся: из полуоткрытой двери в кабинку торчала сумка Меган. - Меган? - позвал .

Protecting the ozone layer while also preventing climate change

Хейл, сидя на плите и действуя вытянутыми ногами как тараном, сорвал решетчатую дверь с петель, ворвался в комнату и теперь приближался к ней большими прыжками. Сьюзан швырнула ему под ноги настольную лампу, но Хейл легко преодолел это препятствие. Он был уже совсем .

 - Беккер взял подушку с соседней койки и помог Клушару устроиться поудобнее. Старик умиротворенно вздохнул. - Так гораздо лучше… спасибо. - Pas du tout, - отозвался Беккер. - О! - Старик радостно улыбнулся.

 В шифровалке нет камер слежения? - удивился Бринкерхофф. - А что, - спросила она, не отрываясь от монитора, - нам с Кармен нужно укромное местечко. Бринкерхофф выдавил из себя нечто невразумительное. Мидж нажала несколько клавиш.

Ozone Layer

Я бы хотел задержаться. - Значит, вы видели башню.

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