Transcript Keith Heidecorn - Pat Arnott Web Site

Atmospheric Aerosols in Amazonia
and land use change: from natural
biogenic to biomass burning
conditions
Keith Heidecorn
Graduate Seminar in Atmospheric Sciences
April 7, 2014
Goals
1. Learn Something New
2. Observe the Effect of the Dry & Wet Season on Land Types
3. Gain Insight into how Aerosols Effect more than just the
Atmosphere
Definitions
 Aerosol Optical Depth
 Black Carbon
 Single Scattering Albedo
 Net Ecosystem
Exchange (NEE)
TT34 (Central Amazon)
PVH (Southern Amazon)
Wet vs. Dry Season
 Wet Season is from January to June
 Dry Season is from July to December
 Which Season would you expect more Land Use Change?
Deforestation
Instrumentation
TSI-3080 SMPS
TSI CPC MODEL 3010
MODIS SATELLITE
Mass Concentrations of the Sites
Why?
Black Carbon
Median Aerosol Number Size Distributions
DOES SIZE MATTER?
YES
Submicron Non Refractory Aerosol
Composition
PVH SITE
WHY
DIFFERENT?
TT34 SITE
Median Scattering & Absorption Coefficients
550 nm
637 nm
637 nm
WET
DRY
Aerosol Optical Depths (AOD)
ARE THE PEAKS DURING
THE DRY OR WET SEASON?
Monthly Ozone
Daily Ozone
Carbon Monoxide
Net Ecosystem Exchange (NEE)
Drought of 2010
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What Have We Learned
 Complexity of the Problem
 Land Use Change has Altered Multiple Systems
 Insights from an Interdisciplinary Approach
Why Should We Care?
Questions?
“It is difficult to get a man to understand something,
when his salary depends upon his not understanding
it!” –Upton Sinclair
Aerosol Size Distributions
TT34
PVH
References
 Artaxo, P., L. V. Rizzo, J. F. Brito, H. M. J. Barbosa, A. Arana, E. T. Sena, G. G. Cirino, W. Bastos, S.
T. Martin, and M. O. Andreae, 2013, Atmospheric aerosols in Amazonia and land use change: from
natural biogenic to biomass burning conditions: Faraday Discussions, v. 165, p. 203-235.
 “Africa.” Map. Google Earth. Google, 05 April 2014. Web. 05 April 2014.
 Chambers, Jeffrey. "Jeffrey Chambers' Lab Page." Jeffrey Chambers' Lab Page. N.p., n.d. Web. 04 Apr.
2014.
 "The Water Cycle : Feature Articles." The Water Cycle : Feature Articles. NASA Earth Observatory,
n.d. Web. 05 Apr. 2014.
 "United Kingdom Chemistry and Aerosols (UKCA) Model." Met Office. N.p., n.d. Web. 06 Apr. 2014.