Atmospheric Aerosols in Amazonia and land use change: from natural
biogenic to biomass burning conditions
Keith HeidecornGraduate Seminar in Atmospheric Sciences
April 7, 2014
1. Learn Something New2. Observe the Effect of the Dry & Wet Season on Land Types3. Gain Insight into how Aerosols Effect more than just the Atmosphere
Goals
Aerosol Optical DepthBlack CarbonSingle Scattering AlbedoNet Ecosystem Exchange (NEE)
Definitions
TT34 (Central Amazon)
PVH (Southern Amazon)
Wet Season is from January to JuneDry Season is from July to DecemberWhich Season would you expect more Land
Use Change?
Wet vs. Dry Season
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 TT34 SITEWHY DIFFERENT?
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?DR
Y
Monthly Ozone
Daily Ozone
Carbon Monoxide
Net Ecosystem Exchange (NEE)
https://www.youtube.com/watch?v=mLNTJYXl9Fg
Drought of 2010
Complexity of the ProblemLand Use Change has Altered Multiple
Systems Insights from an Interdisciplinary Approach
What Have We Learned
Why Should We Care?
“It is difficult to get a man to understand something, when his salary depends upon his not understanding it!” –Upton Sinclair
Questions?
Aerosol Size Distributions
TT34
PVH
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.
References