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Amount of dust, pollen matters for cloud precipitation, climate change
Date:6/7/2010

were in fact the ice nuclei or how many of them there are floating around in the air in various places/seasons," said Sonia Kreidenweis, professor of atmospheric science who works with DeMott and Prenni. "There could be too few to matter. We are actually making these measurements in the air to try to nail this down."

"We don't know if we can identify all the biological particles," DeMott said. "What are the most effective ones? Their amounts matter as well. Is there any way that they play a role in cloud processes?"

Colorado State's atmospheric chemists have been recognized internationally for cutting-edge research in their fields.

  • Prenni's NASA-sponsored research in Brazil, for example, led to a paper in Nature Geosciences that showed, for the first time, data on ice-nucleus concentration and elemental composition in the Amazon basin. He and Markus Petters, also a research scientist at CSU, took measurements for two months as part of the Amazonian Aerosol Characterization Experiments along with scientists from Harvard University and the Max Plank Institute in Germany.

  • Prenni is now leading a CSU effort on a new NSF-sponsored project to study similar processes in Colorado. In addition to the Atmospheric Science group, this collaborative project includes the Colorado State Proteomics and Metabalomics Core Facility, as well as researchers from the University of Colorado and the National Center for Atmospheric Research.

  • Kreidenweis was one of 15 researchers nationally who served on the National Research Council's committee on the Significance of International Transport of Air Pollutants. The committee issued a report in September 2009 reviewing scientific evidence that plumes of air pollutants can have a negative impact on air quality far from their original sources.


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Contact: Emily Wilmsen
Emily.Wilmsen@colostate.edu
970-491-2336
Colorado State University
Source:Eurekalert  

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