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Impacts of Aerosols on the Retreat of the Sierra Nevada Glaciers in California

Category: Optical/Radiative Properties and Remote Sensing

Accepted Manuscripts
DOI: 10.4209/aaqr.2018.03.0089
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Hesham El-Askary 1,2,3, Jingjing Li4, Wenzhao Li1, Thomas Piechota1, Tommy Ta5, Ariane Jong6, Xinyi Zhang7, Tiantian Yang8

  • 1 Schmid College of Science and Technology, Chapman University, CA 92866, USA
  • 2 Center of Excellence in Earth Systems Modeling and Observations, Chapman University, CA 92866, USA
  • 3 Department of Environmental Science, Faculty of Science, Moharam Beek, Alexandria University, Alexandria 21522, Egypt
  • 4 Department of Geosciences and Environment, California State University Los Angeles, CA 90032, USA
  • 5 Assistant Environmental Scientist/Engineer, CIM Group, CA 90010, USA
  • 6 Staff Scientist at Council for Watershed Health, CA 90012, USA
  • 7 China Petroleum Engineering and Construction Corporation (CPECC), Beijing 100120, China
  • 8 Department of Civil and Environmental Engineering, University of California Irvine, CA 92697, USA

Highlights

Natural and Anthropogenic Aerosols impact on Glaciers.
No specific trend yet more work is needed.
Changing AODS over years at Borders.
Need for this kind of work over Glaciers.


Abstract

The snowpack over the Sierra Nevada mountain range is the primary source of water supply for California. Many studies have shown that the increase in aerosols could lead to a reduction of snowpack in this region. This study focus on evaluating the snowpack changes during winter and summer seasons from 2000 to 2016 and the relationship between aerosols and Sierra Nevada glaciers retreat. The change detection analysis during this 17 year time period has shown 76.4% and 91.4% snowpack reduction during winter and summer seasons respectively. The aerosol impacts has been examined with the snowfall over the Sierra Nevada glaciers during 17 years between 2000 to 2016 utilizing Aerosol Optical Depth (AOD), Angstrom exponent, snow depth anomalies, snowfall, radiation fluxes and Albedo. Overall, a negative relationship between AOD and snowfall has been observed during the 17 years period based on the correlation analysis method.

Keywords

Aerosols Snowpack Sierrea Nevada Glacier Retreat


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Accepted Manuscripts
DOI: 10.4209/aaqr.2017.10.0396
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