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