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  Evolving climate network perspectives on global surface air temperature effects of ENSO and strong volcanic eruptions

Kittel, T., Ciemer, C., Lotfi, N., Peron, T., Rodrigues, F., Kurths, J., Donner, R. V. (2021): Evolving climate network perspectives on global surface air temperature effects of ENSO and strong volcanic eruptions. - European Physical Journal - Special Topics, 230, 14-15, 3075-3100.
https://doi.org/10.1140/epjs/s11734-021-00269-9

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Kittel, Tim1, Autor              
Ciemer, Catrin1, Autor              
Lotfi, Nastaran2, Autor
Peron, Thomas2, Autor
Rodrigues, Francisco2, Autor
Kurths, Jürgen1, Autor              
Donner, Reik V.1, Autor              
Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13              
2External Organizations, ou_persistent22              

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 Zusammenfassung: Episodically occurring internal (climatic) and external (non-climatic) disruptions of normal climate variability are known to both affect spatio-temporal patterns of global surface air temperatures (SAT) at time-scales between multiple weeks and several years. The magnitude and spatial manifestation of the corresponding effects depend strongly on the specific type of perturbation and may range from weak spatially coherent yet regionally confined trends to a global reorganization of co-variability due to the excitation or inhibition of certain large-scale teleconnectivity patterns. Here, we employ functional climate network analysis to distinguish qualitatively the global climate responses to different phases of the El Niño–Southern Oscillation (ENSO) from those to the three largest volcanic eruptions since the mid-20th century as the two most prominent types of recurrent climate disruptions. Our results confirm that strong ENSO episodes can cause a temporary breakdown of the normal hierarchical organization of the global SAT field, which is characterized by the simultaneous emergence of consistent regional temperature trends and strong teleconnections. By contrast, the most recent strong volcanic eruptions exhibited primarily regional effects rather than triggering additional long-range teleconnections that would not have been present otherwise. By relying on several complementary network characteristics, our results contribute to a better understanding of climate network properties by differentiating between climate variability reorganization mechanisms associated with internal variability versus such triggered by non-climatic abrupt and localized perturbations.

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 Datum: 2021-08-162021-08-19
 Publikationsstatus: Final veröffentlicht
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 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1140/epjs/s11734-021-00269-9
MDB-ID: pending
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD4 - Complexity Science
Research topic keyword: Complex Networks
Research topic keyword: Oceans
Research topic keyword: Weather
Model / method: Nonlinear Data Analysis
OATYPE: Hybrid Open Access
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Titel: European Physical Journal - Special Topics
Genre der Quelle: Zeitschrift, SCI, Scopus, p3
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Seiten: - Band / Heft: 230 (14-15) Artikelnummer: - Start- / Endseite: 3075 - 3100 Identifikator: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/150617
Publisher: Springer