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

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

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

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

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

6. 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:

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

8. GLOBAL ATMOSPHERIC CIRCULATION http://www.lsrhs.net/departments/science/faculty/brandesa/images/winds.jpg

9. EXAMPLES OF DATA: Graph provided by: S. Schum

10. EXAMPLES OF DATA: Graph provided by: S. Schum

11. 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: