Weather and Climate Dynamics
Weather and Climate Dynamics
WCD
Articles | Volume 5, issue 4
Articles | Volume 5, issue 4
https://doi.org/10.5194/wcd-5-1505-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-5-1505-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 5, issue 4
Research article
 | 
17 Dec 2024
Research article |  | 17 Dec 2024

The role of the Indian Ocean Dipole in modulating the austral spring ENSO teleconnection to the Southern Hemisphere

Luciano Gustavo Andrian, Marisol Osman, and Carolina Susana Vera

Supplement

https://doi.org/10.5194/wcd-5-1505-2024-supplement

Data sets

CFSv2 model hindcast and real-time prediction data IRI https://iridl.ldeo.columbia.edu/SOURCES/.Models/.NMME/.NCEP-CFSv2/

CRU TS v. 4.08 CRU https://crudata.uea.ac.uk/cru/data/hrg/cru_ts_4.05/

GPCC Full Data Monthly Version 2020 at 0.25°: Monthly Land-Surface Precipitation from Rain-Gauges built on GTS-based and Historic Data U. Schneider et al. https://doi.org/10.5676/DWD_GPCC/FD_M_V2020_025

ERA5 monthly averaged data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.f17050d7

Model code and software

LucianoAndrian/ENSO_IOD: Code_Andrian_etal_2024 L. G. Andrian https://doi.org/10.5281/zenodo.14014116

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Short summary
The interplay between the El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) is well-researched in the tropical Indian Ocean, but their effects on the Southern Hemisphere's extratropical regions during spring are less studied. We show that the positive phase of the IOD can strengthen the El Niño circulation anomalies, heightening their continental impacts. On the other hand, negative IOD combined with La Niña shows less consistent changes among the different methodologies.
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