Last edited by Kigasida
Thursday, July 30, 2020 | History

8 edition of The ozone hole found in the catalog.

The ozone hole

by Alex Edmonds

  • 146 Want to read
  • 39 Currently reading

Published by Copper Beech Books in Brookfield, Conn .
Written in English

    Subjects:
  • Ozone layer depletion -- Environmental aspects -- Juvenile literature.,
  • Ozone layer.,
  • Ozone layer depletion.

  • About the Edition

    Explains how ozone holes happen, what effects they have on the environment, and what can be done about this problem.

    Edition Notes

    Includes index.

    StatementAlex Edmonds ; [illustrators, Tessa Barwick ... [et al.].
    SeriesCloser look at, Closer look at (Brookfield, Conn.)
    ContributionsBarwick, Tessa, ill.
    Classifications
    LC ClassificationsQC879.712 .E15 1997
    The Physical Object
    Pagination32 p. :
    Number of Pages32
    ID Numbers
    Open LibraryOL999889M
    ISBN 100761305726
    LC Control Number96038756
    OCLC/WorldCa35651085

    Thirty years ago, scientists reported a hole in the ozone layer 'the size of North America.' The culprit was a man-made chemical called CFCs, which were prevalent in billions of dollars See full summary» Directors: Steve Dorst, Dan Evans. Votes: /10(K). @article{osti_, title = {Ozone crisis}, author = {Roan, S.}, abstractNote = {The author presents an account of the depletion of the atmosphere's ozone layer since the discovery of the phenomenon 15 years ago. The book recounts the flight to ban chlorofluorocarbons (CFC's) and describes the science, the people, and the politics involved, up to the March international treaty.

      The ozone hole, discovered in , has been forming every spring in the atmosphere high over Antarctica. Ozone depletion cools the air, strengthening the . ClO + O → Cl + O 2. In these reactions, the chlorine from the CFC molecule is acting as a catalyst — it’s helping to break apart O 3 molecules and forming O 2 molecules. The result is that, unlike the natural cycle of ozone formation and recycling, the ozone is being broken down into O 2 and not recycled back into O 3 because no free oxygen atoms are left for O 2 to combine with.

      Fueled in part by fears of the ozone hole worsening, 24 nations signed the Montreal Protocol limiting the use of CFCs in These days, scientists understand a lot Author: Erin Blakemore. The Current Information Needs of the Parties. The genesis of Scientific Assessment of Ozone Depletion: was the 23rd Meeting of the Parties to the Montreal Protocol held during 21–25 November in Bali, Indonesia, at which the scope of the scientific needs of the Parties was defined in their Decision XXIII/13 (4), which stated that: " for the report, the Scientific Assessment.


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The ozone hole by Alex Edmonds Download PDF EPUB FB2

This means that the claim that there is an ozone hole over the South Pole implies that there is no appreciable ozone depletion elsewhere.

There is now () some evidence that ozone levels there have stabilized and may be recovering since although it is not possible to ascribe the recovery to the ban on HFC because that recovery is not Cited by: 3.

The graphs above show the progress of the ozone hole for The gray shading indicates the highest and lowest values measured since The red numbers are the maximum or minimum values. The stratospheric temperature and the amount of sunlight reaching the south polar region control the depth and size of the Antarctic ozone hole.

This book underscores the re-emergence of the ozone hole problem and deals with it in its current context of exacerbating global warming. It traces the history of the ozone hole from the stage of formation of the stratospheric ozone ‘layer’, millions of years ago, into the late 20th century when the anthropogenic destruction of that ozone was discovered.

In the early s, scientists began to realize that CFCs were creating a thin spot—a hole—in the ozone layer over Antarctica every spring. This series of satellite images shows the ozone hole on the day of its maximum depth each year from through The history of ozone research is marked by typical examples of the scientific method at work, perfectly illustrating how knowledge progresses.

Hypotheses are contested and then eventually accepted or rejected; truths once believed to be universal and permanent can be called into question; and debates and disagreements between scientists are.

The Ozone Hole is not really a “hole” but a thinning of the ozone layer over the south polar region. Every year, since at leastthere is a sudden, rapid decrease in the stratospheric ozone levels at the end of the Antarctic Size: 5MB.

The stratospheric ozone layer is Earth’s “sunscreen” – protecting living things from too much ultraviolet radiation from the sun. The emission of ozone depleting substances has been damaging the ozone layer.

But through domestic and international action, the ozone layer is. The Ozone Layer is an accessible history of stratospheric ozone, from its discovery in the nineteenth century to current investigations of the Antarctic ozone hole.

Drawing directly on the scientific literature, Christie uses the story of ozone as a case study for examining fundamental issues relating to the practice of modern science and the Cited by: 1. While the ozone hole over Antarctica typically grows in September and October, scientists observed the smallest ozone hole since they first began observing it in.

Find a huge variety of new & used Ozone layer depletion books online including bestsellers & rare titles at the best prices. Shop Ozone layer depletion books at Alibris. Ozone hole facts. These reactions convert the inactive chlorine reservoir chemicals into more active forms, especially chlorine gas (Cl 2).When the sunlight returns to the South Pole in October, UV light rapidly breaks the bond between the two chlorine atoms, releasing free chlorine into the stratosphere, where it takes part in reactions that destroy ozone molecules while regenerating the.

Ozone depletion consists of two related events observed since the late s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions.

The latter phenomenon is referred to as the ozone are also springtime polar tropospheric ozone depletion. Also forgotten is a long list of truly ridiculous claims, such as the one from Al Gore's book "Earth in the Balance"that, thanks to the Antarctic ozone hole, "hunters now report finding blind.

Timeline of Stratospheric Ozone Depletion & Observations. 10 20 30 40 50 Observations or industry data Future projections. Natural emissions. This timeline highlights the average area of the ozone hole between September 7th and October 13th as observed by NASA spaced-based instruments (see colored bars and scale.

The forgotten story of the hole in the ozone layer - and how the world came together to fix it. The scientists and politicians who persuaded Ronald Reagan and Margaret Thatcher to take action.

Good news from Antarctica: The hole in the ozone layer is shrinking, new measurements reveal. Ozone is a molecule made of three oxygen atoms. It's relatively highly concentrated in a particular.

A seasonal decrease, or "hole," in the ozone layer above Antarctica, first discovered in and reported inwas the first confirmation of a thinning of the layer. The hole occurs over Antarctica because the extreme cold helps the very high clouds characteristic of that area form tiny ice particles of water and nitric acid, which.

The Ozone Hole. For nearly a billion years, ozone molecules in the atmosphere have protected life on Earth from the effects of ultraviolet rays. The ozone layer resides in the stratosphere and surrounds the entire Earth.

UV-B radiation ( to nanometer (nm) wavelength) from. Get this from a library. Ozone hole. [Sally Morgan] -- Explains what the ozone layer of the atmosphere is, what destroys it, how it is measured, how this depletion affects humans and life on earth, and what can be done to save it.

Ozone hole definition is - an area of the ozone layer (as near the south pole) that is seasonally depleted of ozone. For the first time, scientists have shown through direct satellite observations of the ozone hole that levels of ozone-destroying chlorine are declining, resulting in less ozone depletion.

NASA Sees Definitive Evidence of the Montreal Protocol's Success - YouTube. K subscribers. NASA Sees Definitive Evidence of the Montreal Protocol's : Sara Blumberg.

The huge hole in Earth's protective ozone layer reached its maximum this year in September, and this year NASA said it was million square miles wide. The .Get this from a library! Ozone hole. [Darlene R Stille] -- Studies the important role of atmospheric ozone in protecting the Earth, and tells how man-made chemicals are causing worrisome holes in .