Halifa‐Marín et al. (2025) Beyond the NAO : The East Atlantic Pattern's Role in Early 20th‐Century Meteorological Droughts in Western Europe

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Identification

• Journal: International Journal of Climatology
• Year: 2025
• Date: 2025-07-23
• Authors: Amar Halifa‐Marín, Miguel Ángel Torres‐Vázquez, Ricardo M. Trigo, Sergio M. Vicente‐Serrano, Marco Turco, Pedro Jiménez‐Guerrero, Juan Pedro Montávez
• DOI: 10.1002/joc.70045

Research Groups

Not specified in the provided text.

Short Summary

This study identifies the East Atlantic (EA) pattern, rather than the North Atlantic Oscillation (NAO), as the primary driver of winter atmospheric variability and precipitation in Western Europe and the Iberian Peninsula during the early 20th century.

Objective

• To characterize North Atlantic winter atmospheric circulation during the early 20th century and evaluate the non-stationary relationship between the EA and NAO patterns, specifically regarding their influence on precipitation in the Iberian Peninsula.

Study Configuration

• Spatial Scale: North Atlantic region, Western Europe, and the Iberian Peninsula.
• Temporal Scale: Early 20th century (winter seasons).

Methodology and Data

• Models used: Not specified.
• Data sources: Sea Level Pressure (SLP) and precipitation data (implied).

Main Results

• During the early 20th century, the EA pattern emerged as the leading mode of atmospheric variability over the NAO.
• The period was characterized by an intensified Azores High and an extensive Icelandic Low, resulting in widespread negative SLP anomalies across the North Atlantic.
• In the Iberian Peninsula, the EA pattern effectively captured precipitation variability in both the western sector (usually NAO-influenced) and the eastern sector (where neither pattern typically exerts significant control).
• Internal climate variability and late 19th-century volcanic activity are suggested as contributing factors to these dynamics.

Contributions

• Demonstrates the non-stationary nature of the relationship between the EA and NAO patterns.
• Expands the understanding of precipitation drivers in the Iberian Peninsula by highlighting the period-specific dominance of the EA pattern.

Funding

Not specified in the provided text.

Citation

@article{HalifaMarín2025Beyond,
  author = {Halifa‐Marín, Amar and Torres‐Vázquez, Miguel Ángel and Trigo, Ricardo M. and Vicente‐Serrano, Sergio M. and Turco, Marco and Jiménez‐Guerrero, Pedro and Montávez, Juan Pedro},
  title = {Beyond the <scp>NAO</scp> : The East Atlantic Pattern's Role in Early 20th‐Century Meteorological Droughts in Western Europe},
  journal = {International Journal of Climatology},
  year = {2025},
  doi = {10.1002/joc.70045},
  url = {https://doi.org/10.1002/joc.70045}
}