Planned closure, one day only - NCAR Mesa Lab - Saturday April 18  more info>

April 7, 2015
The Sun's activity waxes and wanes nearly every two years. The discovery provides clues that could help improve forecasting of solar storms, which can affect technological systems that society depends on.
Seasons on the Sun: Coronal mass ejection in 2012
January 21, 2015
The affiliation establishes a long-term collaboration between UCAR's science education center and the Smithsonian.
UCAR named Smithsonian Affiliate: Kids experiment with cloud exhibit

Morocco will have one of the world’s first drought early warning systems that integrates several remotely sensed data sets from NASA and other U.S. agencies into a composite agricultural drought indicator.

Remote sensing experts and representatives of Morocco’s government worked together to create the Morocco Composite Drought Index.

A new study from an international team of scientists uncovered new information about the tiny, globetrotting organisms commonly used to reconstruct past climate conditions.

Electron micrograph of foraminifera.  Photo credit: Photo by NOAA, courtesy of Wiki Commons
April 1, 2015 | Tropical forests play a major role in the planet’s carbon cycle, but there are a lot of uncertainties about how they will respond to climate change. A new international project aims to bring the future of tropical forests into much clearer focus.
Climate and tropical forests: photo of tropical rainforest
March 11, 2015 | Air pollution in the United States costs thousands of lives and billions of dollars every year. But what if forecasters could issue detailed air quality forecasts days in advance? Such forecasts may be coming. NCAR and its research partners recently received a $1.3 million grant from NASA to develop the capability to produce detailed 48-hour forecasts of ground-level ozone and fine particulate matter.
Forecasting air quality: photo of Los Angeles in summer smog
January 7, 2015 | A new study in Geophysical Research Letters offers for the first time unequivocal evidence that large storms move significant amounts of ozone from the stratosphere down to the troposphere, the lowest part of the atmosphere. The finding has implications for global climate because tropospheric ozone is a powerful greenhouse gas as well as a pollutant that affects human health and the environment.
Thunderstorms and ozone:  A rotating supercell thunderstorm moves across northeast Colorado.
November 5, 2014 | Concentrations of hydrogen chloride (HCl), the main reservoir of chlorine in the stratosphere, have increased by several percent over much of the Northern Hemisphere since 2007, a new study finds. The observed buildup in HCl is attributed to a temporary shift in atmospheric circulation, rather than to any increased emission of the chlorine-containing, ozone-destroying compounds that are banned by the Montreal Protocol.
Ozone concentrations above the Arctic in March 2011
February 24, 2015 | Earth’s weather extends into higher regions of the atmosphere than the one we inhabit. But the influence of those regions has been challenging to chart until recently.
Impacts of atmospheric waves: Photo of EISCAT Svalbard incoherent scatter radar
Matt Kelsch • January 28, 2014 | As this week’s blizzard rumbled toward the U.S. Northeast, many media outlets posted the top-10 snow events for major cities.
Snowfall measurement: cars buried under lots of snow