SPACCS 2008 S torm P eak A erosol and C loud C haracterization S tudy • Storm Peak Laboratory, Steamboat Springs, CO • Study: March 24 – April 14, 2008 • Scientific Questions: – What is the composition of aerosols at this site? • Organic composition • Biological particles – What are the sources of the aerosols at this site? – Do these particles act as CCN or IN? – What organics and biological components are observed in the clouds? Snow? – Can observations be used to parameterize cloud-aerosol models? • How important are biological particles to impacting cloud characteristics? EACHON, NSF Biogenic SOA Workshop, DRI
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SPACCS 2008 S torm P eak A erosol and C loud C haracterization S tudy
SPACCS 2008 S torm P eak A erosol and C loud C haracterization S tudy. Storm Peak Laboratory, Steamboat Springs, CO Study: March 24 – April 14, 2008 Scientific Questions: What is the composition of aerosols at this site? Organic composition Biological particles - PowerPoint PPT Presentation
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SPACCS 2008 Storm Peak Aerosol and Cloud
Characterization Study• Storm Peak Laboratory, Steamboat Springs, CO• Study: March 24 – April 14, 2008
• Scientific Questions: – What is the composition of aerosols at this site?
• Organic composition• Biological particles
– What are the sources of the aerosols at this site? – Do these particles act as CCN or IN? – What organics and biological components are
observed in the clouds? Snow?– Can observations be used to parameterize cloud-
aerosol models? • How important are biological particles to impacting
cloud characteristics?
BEACHON, NSF Biogenic SOA Workshop, DRI
Measurements
• Meteorology– Wind speed/direction– Temperature, potential temperature– Relative Humidity– Vertical profile of T/RH up mountain
• Gas-phase concentrations– Ozone– CO (Thom Rahn, LANL, GC)– CO2 (Brit Stephens, NCAR)– CO2 Isotopes (Thom Rahn, LANL, Cavity Ring Down)– Water Vapor (Thom Rahn, LANL, Cavity Ring Down)– GEM and Reactive Mercury (Daniel Obrist, DRI)
Measurements Continued
• Aerosols– SMPS/APS (SPL)
• Particle number concentrations: ~8nm - ~15 m– CCN– PM2.5 and PM10 OC/EC (Eszter Horayni, CU, Sunset Labs)– PM2.5 and PM10 High Vol Filter samplers (NCAR/CU)– Low Pressure Impactor (Kelly Baustian, CU)