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Title: Liquid Containing Clouds at the North Slope of Alaska Demonstrate Sensitivity to Local Industrial Aerosol Emissions

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2021GL094307· OSTI ID:1818626
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Leipzig University Leipzig Institute for Meteorology Leipzig Germany
  2. University of Colorado Cooperative Institute for Research in Environmental Sciences Boulder CO USA, NOAA Physical Sciences Laboratory Boulder CO USA
  3. University of Colorado Cooperative Institute for Research in Environmental Sciences Boulder CO USA, NOAA Physical Sciences Laboratory Boulder CO USA, University of Colorado Integrated Remote and In Situ Sensing Boulder CO USA

Abstract Cloud condensation nucleus control alter cloud solar albedo through cloud droplet size. Here, we leverage anthropogenic emissions at the North Slope of Alaska as a natural laboratory to study relationships between aerosols and Arctic liquid‐containing clouds. Averaging 14 years of MODIS observations, we found a reduction in temporally averaged cloud effective radius ( ) of up to 1.0 μm related to localized pollution. Pronounced regional gradients in cloud frequency of occurrence and liquid water path prohibit the detection of potential changes of these variables. Observed changes of alter radiative fluxes and increase cloud‐reflected shortwave radiation by up to 0.8 W m 2 in the Prudhoe Bay area for the period covered by observations (April–September). Due to the frequent occurrence of liquid‐containing clouds, this implies that enhanced local emissions in Arctic regions can impact climate processes.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Atmospheric Radiation Measurement (ARM) Data Center
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
DE‐SC0013306; SC0013306
OSTI ID:
1818626
Alternate ID(s):
OSTI ID: 1814450; OSTI ID: 1818628
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Vol. 48 Journal Issue: 17; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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