BER launches Environmental System Science Program. Visit our new website under construction!

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-33.1 Earth 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

Mar 23, 2021
Molecular Connections from Plants to Fungi to Ants
Lipids transfer energy and serve as an inter-kingdom communication tool in leaf-cutter ants&rsqu [more...]

Mar 19, 2021
Microbes Use Ancient Metabolism to Cycle Phosphorus
Microbial cycling of phosphorus through reduction-oxidation reactions is older and more widespre [more...]

Feb 22, 2021
Warming Soil Means Stronger Microbe Networks
Soil warming leads to more complex, larger, and more connected networks of microbes in those soi [more...]

Jan 27, 2021
Labeling the Thale Cress Metabolites
New data pipeline identifies metabolites following heavy isotope labeling.

Analysis [more...]

Aug 31, 2020
Novel Bacterial Clade Reveals Origin of Form I Rubisco
Objectives

  • All plant biomass is sourced from the carbon-fixing enzyme Rub [more...]

List all highlights (possible long download time)