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VIDEO: COLLECTING AEROSOLS WITH THE SAMPLERS Video: L. Harkness Click here for the video!!here
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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!!
• 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!!
• 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:
• www.wunderground.comSearch “Pico, Portugal”History – go to day of event
and the days prior; look at wind direction• http://
fires.globalincidentmap.com/home.php
Put in date range and check for fires in North America
SITES TO USE:
GLOBAL ATMOSPHERIC CIRCULATION
http://www.lsrhs.net/departments/science/faculty/brandesa/images/winds.jpg
EXAMPLES OF DATA:
9/5/2013 9/6/2013 9/7/2013 9/8/2013 9/9/2013 9/10/2013 9/11/2013 9/12/20130
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
September Non-Event Opt OC
ugC/
M3
air
Graph provided by: S. Schum
EXAMPLES OF DATA:
7/10/2013 7/11/2013 7/12/2013 7/13/2013 7/14/20130
0.5
1
1.5
2
2.5
3
2nd July Event Opt OCug
C/M
3 ai
r
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: