2024
DOI: 10.1002/qj.4691
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The role of storm‐track dynamics in the intraseasonal variability of the winter ENSO teleconnection to the North Atlantic

Christopher H. O'Reilly,
Marie Drouard,
Blanca Ayarzagüena
et al.

Abstract: The response of the North Atlantic large‐scale circulation to El Niño–Southern Oscillation (ENSO) exhibits distinct differences between early (November–December) and late (January–February) winter. However, the reasons for this are unclear, particularly regarding the early winter response. Here we examine the role of storm‐track dynamics in influencing the intraseasonal variability of the ENSO teleconnection to the North Atlantic. During late winter there a broad weakening of the eddy heat flux upstream of the… Show more

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Cited by 2 publications
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“…The AMV, an alteration of warm and cold sea surface temperatures in the North Atlantic on decadal timescales, has been shown to influence the intensity and frequency of Atlantic hurricanes (Trenberth and Shea, 2006;Wang et al, 2022) and the long-term variability of the NAO (Davini et al, 2015). Due to the complex teleconnections linking these four climate modes (ENSO, NAO, PNA, and AMV) (e.g., Müller and Roeckner, 2006;Pinto et al, 2009;O'Reilly et al, 2024;Trascasa-Castro et al, 2021;Davini et al, 2015) and their influence on weather patterns across the Northern Hemisphere, in this study we select these modes as potential modulators of wintertime CWP extremes across the Northern Hemisphere. Note that among the selected modes, some are themselves specific phenomena that are internally driven, such as ENSO, while others are a representation of the dominant weather and climate variability in a particular region, such as the NAO or the PNA.…”
Section: Introductionmentioning
confidence: 99%
“…The AMV, an alteration of warm and cold sea surface temperatures in the North Atlantic on decadal timescales, has been shown to influence the intensity and frequency of Atlantic hurricanes (Trenberth and Shea, 2006;Wang et al, 2022) and the long-term variability of the NAO (Davini et al, 2015). Due to the complex teleconnections linking these four climate modes (ENSO, NAO, PNA, and AMV) (e.g., Müller and Roeckner, 2006;Pinto et al, 2009;O'Reilly et al, 2024;Trascasa-Castro et al, 2021;Davini et al, 2015) and their influence on weather patterns across the Northern Hemisphere, in this study we select these modes as potential modulators of wintertime CWP extremes across the Northern Hemisphere. Note that among the selected modes, some are themselves specific phenomena that are internally driven, such as ENSO, while others are a representation of the dominant weather and climate variability in a particular region, such as the NAO or the PNA.…”
Section: Introductionmentioning
confidence: 99%