Just Published

Ozone concentrations above the Arctic in March 2011
November 05, 2014
A circulation change has boosted concentrations of hydrogen chloride (HCl), the main reservoir of chlorine in the stratosphere, by several percent over much of the Northern Hemisphere since 2007.
View of Antarctic sky from NSF/NCAR HIAPER research jet
September 12, 2014
In a surprising finding, a research team concludes that the dominant "detergent" in the atmosphere is equally abundant in the northern and southern hemispheres.
Ground-level ozone's toll: A traffic jam in Delhi, India
September 08, 2014
Ozone pollution in India is damaging millions of tons of the country’s major crops, according to a new study by an international team of researchers. The pollution caused losses of more than $1 billion in a single year, destroying enough food to feed an estimated 94 million people.
Decadal prediction: Map showing trends in sea surface temperature
September 08, 2014
If today’s tools for multiyear climate forecasting had been available in the 1990s, they would have revealed that a slowdown in global warming was likely on the way, according to new research.
Cyclone Gonu on NASA/MODIS satellite, 6/4/07
August 20, 2014
A case study indicates that the COSMIC microsatellite system can significantly improve predictions of tropical cyclones by using GPS radio occultation to observe remote regions of the atmosphere.
Sea surface temperatures during 2007–08 La Niña
August 13, 2014
For millions of people, El Niño or La Niña indicates whether they’re likely to face unusually warm, cold, wet, or dry conditions over the coming winter. A new modeling study pins down the process that apparently determines why La Niña events often last twice as long as typical El Niño events—a result with major implications for seasonal predictions.
Depiction of model-produced meridional circulation beneath solar surface
August 05, 2014
A leading goal of solar scientists is to improve predictions of the Sun's approximately 11-year cycle. New research led by scientists from NCAR and Sweden shows how solar predictions can borrow from weather forecasting techniques in order to predict the timing and extent of the solar cycle.
July 22, 2014
Scientists have found that internal variability can make one season twice as active as another, even when large-scale hurricane-shaping elements are unchanged. The research suggests that seasonal hurricane forecasts could be improved by conveying the amount of unavoidable uncertainty in the outlook.
Pollution, fires, warming west: A fire burns on Camp Pendleton, California
June 25, 2014
California will likely experience more large fires in forested areas this century because of rising temperatures and changes in precipitation along with development patterns, new research finds. The blazes could increase some types of fire-generated air pollution by more than half.
Photo of NCAR scientist Marika Holland explaining changes in Arctic sea ice extent
May 07, 2014
Geophysical Research Letters, a leading journal in Earth science, is toasting its 40th anniversary this month with an editor-picked retrospective collection of 40 papers, including several with authors from NCAR.

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The University Corporation for Atmospheric Research manages the National Center for Atmospheric Research under sponsorship by the National Science Foundation. Any opinions, findings and conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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