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Title: Influence of air mass origin on aerosol properties at a remote Michigan forest site

Journal Article · · Atmospheric Environment (1994)
ORCiD logo [1];  [2];  [3];  [1];  [4];  [1];  [1]
  1. Washington State Univ., Pullman, WA (United States)
  2. Washington State Univ., Pullman, WA (United States); African Centre for Technology Studies, Nairobi (Kenya)
  3. Washington State Univ., Pullman, WA (United States); Rice Univ., Houston, TX (United States)
  4. Washington State Univ., Pullman, WA (United States); Houston Advanced Research Center, The Woodlands, TX (United States)
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The northern Great Lakes region of North America is a large, relatively pristine area. To date, there has only been limited study of the atmospheric aerosol in this region. During summer 2009, a detailed characterization of the atmospheric aerosol was conducted at the University of Michigan Biological Station (UMBS) as part of the Community Atmosphere–Biosphere Interactions Experiment (CABINEX). Measurements included particle size distribution, water-soluble composition, and CCN activity. Aerosol properties were strongly dependent on the origin of the air masses reaching the site. For ~60% of the study period, air was transported from sparsely populated regions to the northwest. During these times aerosol loadings were low, with mean number and volume concentrations of 1630 cm-3 and 1.91 μm3 cm-3, respectively. The aerosol during clean periods was dominated by organics, and exhibited low hygroscopicities (mean κ = 0.18 at s = 0.3%). When air was from more populated regions to the east and south (~29% of the time), aerosol properties reflected a stronger anthropogenic influence, with 85% greater particle number concentrations, 2.5 times greater aerosol volume, six times more sulfate mass, and increased hygroscopicity (mean к = 0.24 at s = 0.3%). Furthermore, these trends are have the potential to influence forest–atmosphere interactions and should be targeted for future study.

Research Organization:
Washington State Univ., Pullman, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0003899
OSTI ID:
1353457
Alternate ID(s):
OSTI ID: 1250952
Journal Information:
Atmospheric Environment (1994), Vol. 107, Issue C; ISSN 1352-2310
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Cited By (3)

Ubiquitous influence of wildfire emissions and secondary organic aerosol on summertime atmospheric aerosol in the forested Great Lakes region journal January 2018
Differences in BVOC oxidation and SOA formation above and below the forest canopy journal January 2017
Ubiquitous Influence of Wildfire Emissions and Secondary Organic Aerosol on Summertime Atmospheric Aerosol in the Forested Great Lakes Region journal March 2018

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Related Subjects

54 ENVIRONMENTAL SCIENCES
aerosol
trajectory analysis
hygroscopicity