© Author(s) 2015. CC Attribution 3.0 License. The influence of the North Atlantic Oscillation and El Niño–Southern Oscillation on mean and extreme values of column ozone over the United States

• Main Authors: I. Petropavlovskikh, R. Evans, G. Mcconville, G. L. Manney, H. E. Rieder
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2014
• Subjects: Dy; North Atlantic; North Atlantic oscillation
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.687.236; http://www.atmos-chem-phys.net/15/1585/2015/acp-15-1585-2015.pdf

Abstract. Continuous measurements of total ozone (by Dob-son spectrophotometers) across the contiguous United States began in the early 1960s. Here, we analyze temporal and spa-tial variability and trends in total ozone from the five US sites with long-term records. While similar long-term ozone changes are detected at all five sites, we find differences in the patterns of ozone variability on shorter timescales. In ad-dition to standard evaluation techniques, STL-decomposition methods (Seasonal Trend decomposition of time series based on LOESS (LOcally wEighted Scatterplot Smoothing)) are used to address temporal variability and “fingerprints ” of dy-namical features in the Dobson data. Methods from statisti-cal extreme value theory (EVT) are used to characterize days with high and low total ozone (termed EHOs and ELOs, re-spectively) at each station and to analyze temporal changes