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Atmospheric Sciences and Global Change
  • vegetation fires

    Hot on the Burn's Trail

    Led by PNNL scientists, researchers developed a new vegetation fire model that will improve understanding of such fires around the world today. It can also predict their evolution with future changes in the environment and society. HESFIRE (Human-Earth System FIRE) integrates the role of atmospheric changes like humidity, terrestrial factors like the amount of vegetation available to burn, and human interactions with the environment.

  • girdled trees in dying forest

    Does Death Stalk the Forest?

    Trees are dying at increasing rates across much of the U.S., surprising forest managers and climate scientists alike. After all, the memories of early 20th century land clearing and logging are fading from today's forests. New research led by PNNL shows that the problem in predicting how forests age may lie in the forest models, not the trees. The trees may be dying from old age, but in general, forests are much more resilient than originally thought.

  • tcap

    The Two Faces of Aerosols

    Tiny particles of pollution—also known as aerosols—both cool and warm the planet. Now, a team of scientists from PNNL and NASA identified how current climate models may be far off in estimating the actual amounts of these particles and their total impact on the atmosphere. The research developed a new modeling technique that revealed the dramatic effect cumulus clouds can have on these tiny pollutants and vice versa.

  • Article named hot article by journal

    Sailing Through Uncharted Waters to Discover Catalysts' Secrets

    Scientists' review of sailing into the uncharted waters of real time, in situ monitoring of catalytic conversions in water and other liquids was chosen as a hot article by Catalysis Science and Technology. The article is available for free during March 2015.

  • World map investment risk

    The Cost of Limiting Global Warming

    Access to high quality institutions could make curbing global warming substantially easier. That's the conclusion of scientists at PNNL and collaborators found in a new study published in Nature Climate Change. Two institutional factors—variations in world-wide investment risk and technologies—may shift efforts to reduce emissions from developing countries to developed countries. The research also found these factors substantially change the cost of cutting global carbon dioxide emissions in half by 2050.

How do human activities and natural systems interact to affect the Earth's climate? Ultimately, that is the question challenging scientists in PNNL’s Atmospheric Sciences & Global Change Division.

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Atmospheric Sciences & Global Change

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Fundamental & Computational Sciences