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

Abstract

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 μm 3 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 themore » potential to influence forest–atmosphere interactions and should be targeted for future study.« less

Authors:
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)
Publication Date:
Research Org.:
Washington State Univ., Pullman, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1353457
Alternate Identifier(s):
OSTI ID: 1250952
Grant/Contract Number:  
SC0003899
Resource Type:
Accepted Manuscript
Journal Name:
Atmospheric Environment (1994)
Additional Journal Information:
Journal Name: Atmospheric Environment (1994); Journal Volume: 107; Journal Issue: C; Journal ID: ISSN 1352-2310
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; aerosol; trajectory analysis; hygroscopicity

Citation Formats

VanReken, T. M., Mwaniki, G. R., Wallace, H. W., Pressley, S. N., Erickson, M. H., Jobson, B. T., and Lamb, B. K. Influence of air mass origin on aerosol properties at a remote Michigan forest site. United States: N. p., 2015. Web. doi:10.1016/j.atmosenv.2015.02.027.
VanReken, T. M., Mwaniki, G. R., Wallace, H. W., Pressley, S. N., Erickson, M. H., Jobson, B. T., & Lamb, B. K. Influence of air mass origin on aerosol properties at a remote Michigan forest site. United States. doi:10.1016/j.atmosenv.2015.02.027.
VanReken, T. M., Mwaniki, G. R., Wallace, H. W., Pressley, S. N., Erickson, M. H., Jobson, B. T., and Lamb, B. K. Tue . "Influence of air mass origin on aerosol properties at a remote Michigan forest site". United States. doi:10.1016/j.atmosenv.2015.02.027. https://www.osti.gov/servlets/purl/1353457.
@article{osti_1353457,
title = {Influence of air mass origin on aerosol properties at a remote Michigan forest site},
author = {VanReken, T. M. and Mwaniki, G. R. and Wallace, H. W. and Pressley, S. N. and Erickson, M. H. and Jobson, B. T. and Lamb, B. K.},
abstractNote = {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.},
doi = {10.1016/j.atmosenv.2015.02.027},
journal = {Atmospheric Environment (1994)},
number = C,
volume = 107,
place = {United States},
year = {2015},
month = {2}
}

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