Investigating mechanism underlying the North Atlantic Oscillation

ORAL

Abstract

We employ Empirical Orthogonal Functions (EOF) analysis, commonly used in climate research, to probe the prevailing modes of variability in geopotential height, capturing the most significant patterns in the North Atlantic region. The North Atlantic Oscillation (NAO) is a cyclical climate pattern with variable time periods that affects North Atlantic weather, characterized by pressure differences between the Icelandic Low and the Azores High. It has positive and negative phases, influencing weather patterns, storm tracks, and temperature in Europe and North America. We focus on time periods characterised by high variability in the NAO index, and quantify contributions from barotropic and baroclinic components, in an effort to better understand the mechanisms and feedbacks behind this variability.

*This research was supported by NASA grant 80NSSC18K0772 and NSF grant OCE-2123496. Partial support from DOE grant DE-SC0020229 and NSF grant PHY-2020249 is also acknowledged.

–

Presenters

  • Abdus Samad

    • University of Rochester

Authors

  • Abdus Samad

    • University of Rochester

  • Benjamin Storer

    • University of Rochester
    • UNIVERSITY OF ROCHESTER

  • Shikhar Rai

    • University of Rochester

  • Hussein Aluie

    • Mechanical Engineering Department, University of Rochester, Rochester, NY 14625, USA
    • Dept. of Mechanical Engg, University of Rochester
    • Department of Mechanical Engineering, University of Rochester, Rochester, New York, USA
    • Department of Mechanical Engineering, University of Rochester
    • University of Rochester