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NCAR & UCAR News Center Jan. 29, 2009
HIAPER Pole to Pole Observations (HIPPO) - Multimedia Gallery
(teleconference, videos, photos)
HIPPO is a three-year field project to make the most extensive airborne sampling of carbon dioxide and other greenhouse gases in the atmosphere to date, from the Arctic to the Antarctic. Study results will help scientists understand the behavior of these gases in the atmosphere and lead to improved predictions about climate change. | News Release
Laura Pan(NCAR, ACD) Jan. 21, 2009
START08 - Stratosphere-Troposphere Analyses of Regional Transport 2008 Experiment: Scientific Concept and Initial Results
(42 minutes)
Using HIAPER, the NSF/NCAR Gulfstream V research aircraft, the START08 field campaign focused on transport in the upper troposphere and lower stratosphere. Pan discusses the experiment's concept and design process, highlights of the research flights, expected results, as well as various aspects of working on a research aircraft.
Steven S. Brown (NOAA) Nov. 19, 2008
Atmospheric Chemistry after Dark
(47 minutes)
Brown, a scientist in NOAA's Earth System Research Laboratory, explores new findings on several aspects of nighttime chemical transformations that are relevant in the troposphere.
NCAR MOPITT team Apr. 30, 2008
MOPITT Instrument - Multimedia Gallery
(illustrations and videos)
MOPITT (Measurements of Pollution in the Troposphere) is an instrument flying on NASA's EOS Terra spacecraft. NCAR scientists and their international colleagues developed and run MOPITT to measure the global distributions of carbon monoxide (CO) and methane (CH4) in the troposphere. CO also serves as a tracer for other kinds of air pollution. | News Release
Sasha Madronich (ACD) Nov. 12, 2007
Atmospheric Pollution from Megacities
(55 minutes)
Air pollution from megacities not only affects local air quality, but spills over into surrounding regions, possibly to the entire globe. There are consequences for human health, cultivated and natural ecosystems, visibility, atmospheric energy budgets, weather modification, and climate. He points out areas of uncertainty where further research is needed. Recent studies show that dilution is not a solution.
Guy Brasseur (NCAR, ESSL) Oct. 18, 2007
The Story of Ozone in Our Atmosphere: A Success Story
(58 minutes)
Brasseur provides a historical perspective on the discovery of the chemical nature of this gas and its ability to protect the biosphere from harmful ultraviolet solar radiation. It took decades for scientists to understand how ozone is formed and how it is destroyed. Brasseur discusses the role of observations, laboratory studies, and modeling in successfully addressing the problem of the Antarctic ozone hole, which was created by the use of industrially manufactured chlorofluorocarbons. The efforts to reduce ozone depletion have also had a protective effect on the climate, making this is a story of success for both the scientific community and policymakers.
Jose Luis Jimenez (CIRES, University of Colorado Boulder) Oct. 17, 2007
Aerosol Mass Spectrometric Characterization of Organic Particles: New Techniques and Field Results
(51 minutes)
Jimenez discusses the use of aerodyne aerosol mass spectrometers for the characterization of organic aerosols. Jimenez summarizes recent spectrometer developments and presents results from several recent field campaigns in the United States and Mexico. He compares secondary organic aerosols and total organic aerosols derived from currently used models to real-world aerosols. | Abstract
NCAR & UCAR News Center Jun. 21, 2007
Scientists Close in on Missing Carbon Sink; Northern Forests Less Effective than Expected - Multimedia Gallery
(video, illustration, photo)
Forests in the United States and other northern mid- and upper-latitude regions are playing a smaller role in offsetting global warming than previously thought. | News Release
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The National Center for Atmospheric Research and UCAR Office of Programs are operated by UCAR under the sponsorship of the National Science Foundation and other agencies. Opinions, findings, conclusions, or recommendations expressed in these webcasts do not necessarily reflect the views of UCAR/NCAR/UOP or any of its sponsors.

 

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