1. 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

2. Overview Comparison of marine organic particle composition from the UVa Bubbler, Sea Sweep, and Ambient Marine Factor

3. Overview Comparison of marine organic particle composition from the UVa Bubbler, Sea Sweep, and Ambient Marine Factor

4. 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

5. Nascent Marine Aerosol from Bubbling Ambient Sea Water

6. Marine Aerosol Production: Bubbler Vacuum Pump Bubbler Outlet 1 pair of Teflon filters Sampled at 80% RH No diameter size cut “Bulk aerosol”  sub and super micrcon

7. Organic Composition: Bubbler

8. Northern CA Southern CA

9. Bubbling Characteristics FineCoarseJets Morning Afternoon Night 3.43.2 1.7 1.9 4.22.6 Southern CA Northern CA San Francisco Bay frit type flow (lpm) = phenol

10. Marine Aerosol Production: Sea Sweep

11. Organic Aerosol Sampling: Sea Sweep and Ambient Mass Flow Meter and Controller Total: 16.8 lpm Vacuum Pump PM1 Cyclone 2 pairs of Teflon filters Dried to 55% RH

12. Organic Composition: Sea Sweep Northern CA Southern CA

13. Single Particle Sea Sweep Particle Map Hawkins et al. 2010 High C Low C

14. Single Particle Sea Sweep Particle Map Hawkins et al. 2010 High C Low C

15. Organic Composition: Ambient

16. Ambient Marine Aerosol Russell et al. 2010 Marine Factor Alcohol: 62% Acid: 9% Alkane: 20% Amine: 9% Makes up on average 13% of total OM Similar to marine insoluble organic standards

17. Ambient Marine Aerosol Marine Factor fraction of OM

18. Single Particle Ambient Marine Particle Map Hawkins et al. 2010 High C Low C

19. Summary 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

20. Thanks! Acknowledgements: Scientists and crew of R/V Atlantis Crew at the LBNL Beamline PMEL Atlantis Group Russell Group PNNL Group and Dan Czizco