1. Atlantic sea-surface temperatures, May 2010

    Active summer ahead for hurricanes—and researchers

    The year 2010 brought a difficult and sometimes tragic few months of weather events—first the snowstorms and record cold that battered much of the Northern Hemisphere, then tornadoes and floods in the United States.

    • Weather

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  2. AMS and UCAR urge U.Va. to support climate scientist, defend academic freedom

    Their letter to the president of the University of Virginia supports a statement by the university's faculty and questions the Virginia attorney general's use of governmental authority.

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  3. Scrutinizing the Windsor twister from all angles

    After a very unusual tornado caused extensive damage along a 34-mile (55-kilometer) swath of northern Colorado in 2008, a team of scientists from NCAR and Colorado State University undertook a multidisciplinary study integrating meteorology, climatology, and social science.

    • Weather

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  4. New study analyzes plant emissions and methane

    A study that includes NCAR scientists suggests that plant leaves emit far less methane when exposed to sunlight than previously thought. The research estimates that foliage is the source of less than 1% of Earth’s methane emissions.

    • Air Quality

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  5. 6 cell model

    From Arctic Oscillation to Pineapple Express: A Weather-Maker Patterns Glossary

    Pineapple Express, monsoonal flow, El Niño, Madden-Julian Oscillation—these are some of the atmospheric patterns that shape our weather and climate. This glossary provides definitions for the major patterns that wax and wane across our planet.

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