U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights


Using Amazonian Aerosols to Understand Preindustrial Aerosol Impacts
Published: October 04, 2010
Posted: November 03, 2010

The Amazon is one of the few continental regions where atmospheric aerosol particles and their effects on climate are not dominated by anthropogenic sources. In the Amazonian Aerosol Characterization Experiment 2008 (AMAZE-08), during the Amazonian wet season, DOE-funded scientists studied the composition, physical characteristics, and cloud-nucleating ability of the local aerosols under ambient conditions, conditions that approach those of the pristine pre-industrial era. As reported in a recent Science article, the authors measured aerosol that was very dilute and primarily limited to primary biological fragments and to secondary biogenic aerosol largely unmixed with typical inorganic products of human activity. Further, they found that the aerosol-cloud-precipitation system there was “distinctly different” from that over land regions impacted by human activity or even pristine ocean regions. These results are highly relevant to reliable modeling of the atmosphere in the preindustrial period to investigate the human perturbations that impact current and future climate regimes.

Reference: U. Poeschl, et al. 2010. "Rainforest Aerosols as Biogenic Nuclei of Clouds and Precipitation in the Amazon," Science, 329, 1513-1516.

Contact: Kiran Alapaty, SC-23.1, (301) 903-3175, Ashley Williamson, SC-23.1, (301) 903-3120
Topic Areas:

  • Research Area: Atmospheric System Research

Division: SC-23.1 Climate and Environmental Sciences Division, BER

 

BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

Aug 24, 2019
New Approach for Studying How Microbes Influence Their Environment
A diverse group of scientists suggests a common framework and targeting of known microbial processes [more...]

Aug 08, 2019
Nutrient-Hungry Peatland Microbes Reduce Carbon Loss Under Warmer Conditions
Enzyme production in peatlands reduces carbon lost to respiration under future high temperatures. [more...]

Aug 05, 2019
Amazon Forest Response to CO2 Fertilization Dependent on Plant Phosphorus Acquisition
AmazonFACE Model Intercomparison. The Science Plant growth is dependent on the availabi [more...]

Jul 29, 2019
A Slippery Slope: Soil Carbon Destabilization
Carbon gain or loss depends on the balance between competing biological, chemical, and physical reac [more...]

Jul 15, 2019
Field Evaluation of Gas Analyzers for Measuring Ecosystem Fluxes
How gas analyzer type and correction method impact measured fluxes. The Science A side- [more...]

List all highlights (possible long download time)