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Project Final Report: Linking Plant Stress, Biogenic SOA, and CCN Production - A New Feedback in the Climate System?

Technical Report ·
OSTI ID:1354727
 [1];  [2]
  1. National Science Foundation (NSF), Washington, DC (United States); National Science Foundation
  2. Washington State Univ., Pullman, WA (United States)
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This project worked toward understanding the role of variable biogenic emissions in the formation of secondary organic aerosol (SOA), and in turn the potential for this aerosol to affect cloud droplet formation. It was premised on the idea that a changing climate could impose biogenic and abiogenic stresses on plants that would affect the emissions of volatile organic compounds (VOCs). The transformation of these VOCs to SOA and cloud condensation nuclei (CCN) implied the possibility of a feedback mechanism within the biosphere/atmosphere/climate system. The project’s activities centered on laboratory experiments to study the effects of stresses on plants and plant-derived material under controlled conditions, observing both the VOC emissions and the aerosol that formed from the oxidation of those VOCs. The results highlighted the potentially important contributions of stress and decomposition mechanisms to biogenic SOA formation. Related field measurements elucidated the conditions when these factors could be important in the ambient environment. The project also revealed repeated the complexity of the stress/VOC emission relationship, and the difficulty in expressing these relationships in a comprehensive manner.
Research Organization:
Washington State Univ., Pullman, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0003899
OSTI ID:
1354727
Report Number(s):
DOE-WSU--3899
Country of Publication:
United States
Language:
English

References (5)

Influence of air mass origin on aerosol properties at a remote Michigan forest site journal April 2015
SOA Formation Potential of Emissions from Soil and Leaf Litter journal December 2013
Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: inter- and intra-species variability for six coniferous species journal January 2015
Quantification of biogenic volatile organic compounds with a flame ionization detector using the effective carbon number concept journal January 2012
Impacts of simulated herbivory on volatile organic compound emission profiles from coniferous plants journal January 2015

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54 ENVIRONMENTAL SCIENCES