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Scientists Find 'Fingerprint' Of Human Activities In Recent Tropopause Height Changes
July 25, 2003 — Scientists from the Lawrence Livermore National Laboratory have determined that human-induced changes in ozone and well-mixed greenhouse gases are the primary drivers of recent changes in the height ... > full story -
Satellites See Lightning Strikes In Ozone's Origins
July 16, 2003 — During summertime ozone near the Earth's surface forms in most major U.S. cities when sunlight and heat mix with car exhaust and other pollution, causing health officials to issue "ozone ... > full story -
City-Grown Air Pollution Is Tougher On Country Trees
July 10, 2003 — A tree grows in Brooklyn -- despite big-city air pollutants. Meanwhile, identical trees planted downwind of city pollution grow only half as well -- a surprising finding that ecologists in a Cornell ... > full story -
Chicago Lake Breeze Effect Could Increase Asthma Risk
June 3, 2003 — Chicago has long been known as one of the nation's worst cities for asthma sufferers. Now scientists think they may know why. The culprit, they say, is the familiar lake breeze effect that moves ... > full story -
NASA Finds Wide Annual Fluctuations In Arctic Ozone Loss
March 31, 2003 — Ozone depletion over Earth's Arctic region varies widely from year to year in its amount, timing and pattern of loss. That's the conclusion of a research team using data from the Microwave ... > full story -
New NCAR Analysis Sheds Light On The Northern Hemisphere's Springtime Ozone Peak
March 24, 2003 — Scientists at the National Center for Atmospheric Research (NCAR) and colleagues at universities and NASA have clarified the process by which ozone--an essential shield in the stratosphere, but a ... > full story -
Surprise! Lightning Has Big Effect On Atmospheric Chemistry
March 20, 2003 — Scientists were surprised to learn summer lightning over the U.S. significantly increases regional ozone and other gases that affect air chemistry 3 to 8 miles above Earth's surface.The ... > full story -
Mt. Pinatubo Eruption Provides A Natural Test For The Influence Of Arctic Circulation On Climate
March 13, 2003 — A recent NASA-funded study has linked the 1991 eruption of the Mount Pinatubo to a strengthening of a climate pattern called the Arctic Oscillation. For two years following the volcanic eruption, the ... > full story -
Ozone Levels In Southern California Smog May Be Higher Than Current Air Quality Models Predict
February 11, 2003 — Current air-quality models used for predicting air pollution may be underestimating ozone levels in Southern California by as much as 10% of the national one-hour ozone standard, a UC Irvine study ... > full story -
Ozone May Provide Environmentally Safe Protection For Grains
January 31, 2003 — Taking a clue from air purification systems used in surgical suites, Purdue University researchers have discovered that ozone can eliminate insects in grain storage facilities without harming food ... > full story
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