Downside of Cleaner Air: More Warming ; Fewer Pollutants Means Average Temperatures May Rise 8 Degrees F. by 2100, New Research Suggests

By Peter N. Spotts writer of The Christian Science Monitor | The Christian Science Monitor, December 27, 2005 | Go to article overview

Downside of Cleaner Air: More Warming ; Fewer Pollutants Means Average Temperatures May Rise 8 Degrees F. by 2100, New Research Suggests


Peter N. Spotts writer of The Christian Science Monitor, The Christian Science Monitor


New measurements of tiny particles in Earth's atmosphere contain a sobering message: All those hard-won efforts to cut air pollution may unwittingly accelerate global warming.

The result: The planet is likely to warm more and faster than current projections suggest, according to a team of British and American scientists.

The group has produced the most precise estimates yet of how tiny particles, known as aerosols, could affect the world's climate. Aerosols, which include pollutants, have a cooling effect on the atmosphere, and the team's work suggests that the cooling effect is strong - nearly as strong as the top estimates of the United Nation's Intergovernmental Panel on Climate Change (IPCC).

Thus, the dwindling presence of aerosols means that global average temperatures could rise faster than previously estimated and reach toward the high end of projections for the end of the century.

Those estimates currently range from 2.7 to 7.9 degrees F., depending on how emissions of greenhouse gases and other factors play out in coming years.

The results, published in the current edition of Nature, imply "future atmospheric warming greater than is presently predicted, as aerosol emissions continue to decline," suggests the team, led by Nicolas Bellouin at Britain's Meteorological Office in Exeter.

Aerosols occur naturally as dust blown from deserts, wind- whipped sea salt, and emission from volcanoes. They also come from burning fossil fuels. But scientists have had a tough time discerning aerosols' precise role in affecting climate.

The IPCC has been trying to get a clear picture of aerosols' impact for at least 10 years, "but the results always come up very uncertain," says James Coakley, an atmospheric scientist at Oregon State University in Corvallis. …

The rest of this article is only available to active members of Questia

Already a member? Log in now.

Notes for this article

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items

Items saved from this article

This article has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this article

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this article

Cited article

Style
Citations are available only to our active members.
Buy instant access to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited article

Downside of Cleaner Air: More Warming ; Fewer Pollutants Means Average Temperatures May Rise 8 Degrees F. by 2100, New Research Suggests
Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this article

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Help
Full screen

matching results for page

    Questia reader help

    How to highlight and cite specific passages

    1. Click or tap the first word you want to select.
    2. Click or tap the last word you want to select, and you’ll see everything in between get selected.
    3. You’ll then get a menu of options like creating a highlight or a citation from that passage of text.

    OK, got it!

    Cited passage

    Style
    Citations are available only to our active members.
    Buy instant access to cite pages or passages in MLA, APA and Chicago citation styles.

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

    1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

    Cited passage

    Thanks for trying Questia!

    Please continue trying out our research tools, but please note, full functionality is available only to our active members.

    Your work will be lost once you leave this Web page.

    Buy instant access to save your work.

    Already a member? Log in now.

    Author Advanced search

    Oops!

    An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.