CHEMISTRY OF AEROSOLS Analyzing the composition of aerosols collected on Mt. Pico Photo: L. Harkness.

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Presentation transcript:

CHEMISTRY OF AEROSOLS Analyzing the composition of aerosols collected on Mt. Pico Photo: L. Harkness

Describe how the high volume sampler works. Write observations of the filters. VIDEO NOTES:

VIDEO: COLLECTING AEROSOLS WITH THE SAMPLERS Video: L. Harkness Click here for the video!!here

Describe how instruments and filters are prepared. How does the OC/EC work? What do the colored lines on the screen represent? VIDEO NOTES:

VIDEO: ANALYZING FILTER SAMPLES FOR CARBON Video: L. Harkness Click here for the video!!here

Analyze graphs of OC data from various dates Research the weather that day and previous 5 days From which land mass could the aerosols have come from? Research any possible events that would cause high levels of organic aerosols around that date. TODAY’S TASKS:

Search “Pico, Portugal” History – go to day of event and the days prior; look at wind direction php php Put in date range and check for fires in North America SITES TO USE:

GLOBAL ATMOSPHERIC CIRCULATION

EXAMPLES OF DATA: Graph provided by: S. Schum

EXAMPLES OF DATA: Graph provided by: S. Schum

The difference between an event and a non-event is the amount of carbon in micrograms per cubic meter OC (organic carbon): soot, carbon from life sources (decomposition, trees – oils, burning, marine organisms) EC (elemental carbon): similar to graphite EXAMPLES OF DATA: