Organic Particle Production from the Bubbler and Sea Sweep During CalNex 2010 Amanda Frossard, Lynn Russell, Scripps Institution of Oceanography, UC San Diego William Keene, John Maben, Department of Environmental Science, University of Virginia Timothy Bates, and Patricia Quinn Pacific Marine Environmental Laboratory, NOAA January 12, 2011 - CalNex Data Meeting
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Organic Particle Production from the Bubbler and Sea Sweep During CalNex 2010 Amanda Frossard, Lynn Russell, Scripps Institution of Oceanography, UC San.
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Organic Particle Production from the Bubbler and Sea Sweep
During CalNex 2010 Amanda Frossard, Lynn Russell,
Scripps Institution of Oceanography, UC San DiegoWilliam Keene, John Maben,
Department of Environmental Science, University of VirginiaTimothy Bates, and Patricia Quinn
Pacific Marine Environmental Laboratory, NOAA
January 12, 2011 - CalNex Data Meeting
Overview• Comparison of marine organic particle
composition from the UVa Bubbler, Sea Sweep, and Ambient Marine Factor
Overview• Comparison of marine organic particle
composition from the UVa Bubbler, Sea Sweep, and Ambient Marine Factor
Methods
• Fourier transform Infrared (FTIR) spectroscopy of filter samples to get overall organic mass and functional groups
• Scanning transmission x-ray microscopy near edge absorption fine structure (STXM-NEXAFS) to get morphology and composition of single particles impacted on sample windows
Nascent Marine Aerosol from Bubbling Ambient Sea Water
Marine Aerosol Production: Bubbler
Vacuum Pump
Bubbler Outlet
1 pair of Teflon filters
Sampled at 80% RHNo diameter size cut“Bulk aerosol”
• Sea sweep, bubbler, and ambient marine factor show similar organic functional group composition
• Single particles from the Sea Sweep and clean marine samples have particle morphologies and absorption spectra similar to other observed marine particle
Thanks!
Acknowledgements:• Scientists and crew of R/V Atlantis• Crew at the LBNL Beamline • PMEL Atlantis Group• Russell Group• PNNL Group and Dan Czizco