Effects of anthropogenic pollution on Amazonian aerosol composition and climate relevant properties
EMSL Project ID
48344
Abstract
DOE and Brazilian agencies have funded the multi-year GoAmazon research program from 1 January 2014 through 31 December 2015 to quantify and understand how aerosol and cloud life cycles in a particularly clean background in the tropics are influenced by pollutant outflow from a large tropical city, all in the context of addressing the susceptibility of cloud-aerosol-precipitation interactions to present-day and future pollution in the tropics. The experiment takes advantage of the city of Manaus, with over 2 million inhabitants, in the setting of the surrounding green ocean as a natural laboratory for understanding the effects of present and future anthropogenic pollution on the aerosol life cycle in the tropics. The scientific objectives of GoAmazon are aligned with the research priorities of the DOE BER Climate and Environmental Sciences Division research programs on Regional Climate Modeling, Earth System Modeling, Atmospheric System Research and Terrestrial Ecosystem Science. The theme uniting these research areas is the development of a data-driven knowledge base for predicting how the present-day functioning of energy, carbon, and chemical flows in the Amazon Basin might change, both due to external forcing on the Basin from global climate change and internal forcing from past and projected demographic changes in the Basin. The ultimate goal is to estimate future changes in direct and indirect radiative forcing, energy distributions, regional climate, ecosystem functioning, and feedbacks to global climate.
The GoAmazon measurements include a comprehensive suite of in situ meteorological, atmospheric chemistry and ecological observations. We propose to enhance these in-situ observations with filter samples analyzed using unique EMSL capabilities to address specific objectives and science questions. The resulting knowledge will be integrated with the results of GoAmazon in-situ measurements and used to improve the predictive capability of climate models. The specific needs for EMSL analytical capabilities include 1) advanced EMSL analytical techniques for characterizing complex secondary organic aerosol (SOA) composition to investigate the role of ecosystem functioning and anthropogenic pollution in controlling SOA production and 2) advanced EMSL capabilities for characterizing the three dimensional structure and composition of particles in clean and polluted conditions to understand the processes controlling particle formation, growth and climate relevant properties.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2014-10-01
End Date
2015-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
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