Hesham El-Askary 1,2,3, Jingjing Li4, Wenzhao Li1, Thomas Piechota1, Tommy Ta5, Ariane Jong6, Xinyi Zhang7, Tiantian Yang8

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

Received: March 8, 2018
Revised: April 3, 2018
Accepted: April 3, 2018
Download Citation: ||https://doi.org/10.4209/aaqr.2018.03.0089  

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Cite this article:
El-Askary, H., Li, J., Li, W., Piechota, T., Ta, T., Jong, A., Zhang, X. and Yang, T. (2018). Impacts of Aerosols on the Retreat of the Sierra Nevada Glaciers in California. Aerosol Air Qual. Res. 18: 1317-1330. https://doi.org/10.4209/aaqr.2018.03.0089


  • 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.


The snowpack in the Sierra Nevada mountain range is the primary source of water for California. Many studies have shown that the increase in aerosols could lead to a reduction of the snowpack in this region. This study focuses on evaluating changes in the snowpack during the winter and summer seasons from 2000 till 2016 and determining the relationship between aerosols and the retreat of glaciers in the Sierra Nevada.The change detection analysis has shown reductions of 76.4% and 91.4% in the snowpack during winter and summer, respectively. Utilizing the aerosol optical depth (AOD), Angstrom exponent, snow depth anomalies, snowfall, radiation fluxes, and albedo, the effect of aerosols on snowfall over the Sierra Nevada glaciers has been examined for this 17-year period. Overall, based on correlation analysis, a negative relationship exists between the AOD and the snowfall.

Keywords: Aerosols; Snowpack; Sierrea Nevada; Glacier Retreat.


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