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Title: The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska

Abstract

Here, the Arctic is warming at an alarming rate, yet the processes that contribute to the enhanced warming are not well understood. Arctic aerosols have been targeted in studies for decades due to their consequential impacts on the energy budget, both directly and indirectly through their ability to modulate cloud microphysics. Even with the breadth of knowledge afforded from these previous studies, aerosols and their effects remain poorly quantified, especially in the rapidly changing Arctic. Additionally, many previous studies involved use of ground-based measurements, and due to the frequent stratified nature of the Arctic atmosphere, brings into question the representativeness of these datasets aloft. Here, we report on airborne observations from the US Department of Energy Atmospheric Radiation Measurement (ARM) program's Fifth Airborne Carbon Measurements (ACME-V) field campaign along the North Slope of Alaska during the summer of 2015. Contrary to previous evidence that the Alaskan Arctic summertime air is relatively pristine, we show how local oil extraction activities, 2015's central Alaskan wildfires, and, to a lesser extent, long-range transport introduce aerosols and trace gases higher in concentration than previously reported in Arctic haze measurements to the North Slope. Although these sources were either episodic or localized, they serve asmore » abundant aerosol sources that have the potential to impact a larger spatial scale after emission.« less

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [3];  [4]
  1. Univ. of Colorado, Boulder, CO (United States); National Oceanic and Atmospheric Administration, Boulder, CO (United States)
  2. National Oceanic and Atmospheric Administration, Boulder, CO (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23), Atmospheric System Research
OSTI Identifier:
1417488
Alternate Identifier(s):
OSTI ID: 1425333
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Atmospheric Chemistry and Physics (Online)
Additional Journal Information:
Journal Name: Atmospheric Chemistry and Physics (Online); Journal Volume: 18; Journal Issue: 2; Journal ID: ISSN 1680-7324
Publisher:
European Geosciences Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Creamean, Jessie M., Maahn, Maximilian, de Boer, Gijs, McComiskey, Allison, Sedlacek, Arthur J., and Feng, Yan. The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska. United States: N. p., 2018. Web. doi:10.5194/acp-18-555-2018.
Creamean, Jessie M., Maahn, Maximilian, de Boer, Gijs, McComiskey, Allison, Sedlacek, Arthur J., & Feng, Yan. The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska. United States. doi:10.5194/acp-18-555-2018.
Creamean, Jessie M., Maahn, Maximilian, de Boer, Gijs, McComiskey, Allison, Sedlacek, Arthur J., and Feng, Yan. Thu . "The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska". United States. doi:10.5194/acp-18-555-2018. https://www.osti.gov/servlets/purl/1417488.
@article{osti_1417488,
title = {The influence of local oil exploration and regional wildfires on summer 2015 aerosol over the North Slope of Alaska},
author = {Creamean, Jessie M. and Maahn, Maximilian and de Boer, Gijs and McComiskey, Allison and Sedlacek, Arthur J. and Feng, Yan},
abstractNote = {Here, the Arctic is warming at an alarming rate, yet the processes that contribute to the enhanced warming are not well understood. Arctic aerosols have been targeted in studies for decades due to their consequential impacts on the energy budget, both directly and indirectly through their ability to modulate cloud microphysics. Even with the breadth of knowledge afforded from these previous studies, aerosols and their effects remain poorly quantified, especially in the rapidly changing Arctic. Additionally, many previous studies involved use of ground-based measurements, and due to the frequent stratified nature of the Arctic atmosphere, brings into question the representativeness of these datasets aloft. Here, we report on airborne observations from the US Department of Energy Atmospheric Radiation Measurement (ARM) program's Fifth Airborne Carbon Measurements (ACME-V) field campaign along the North Slope of Alaska during the summer of 2015. Contrary to previous evidence that the Alaskan Arctic summertime air is relatively pristine, we show how local oil extraction activities, 2015's central Alaskan wildfires, and, to a lesser extent, long-range transport introduce aerosols and trace gases higher in concentration than previously reported in Arctic haze measurements to the North Slope. Although these sources were either episodic or localized, they serve as abundant aerosol sources that have the potential to impact a larger spatial scale after emission.},
doi = {10.5194/acp-18-555-2018},
journal = {Atmospheric Chemistry and Physics (Online)},
number = 2,
volume = 18,
place = {United States},
year = {Thu Jan 18 00:00:00 EST 2018},
month = {Thu Jan 18 00:00:00 EST 2018}
}

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