Zhang et al. (2025) A Simple Intermediate Coupled MJO‐ENSO Model: Multiscale Interactions and ENSO Complexity

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Journal of Advances in Modeling Earth Systems
• Year: 2025
• Date: 2025-12-01
• Authors: Yinling Zhang, Nan Chen, Charlotte Moser
• DOI: 10.1029/2025ms005374

Research Groups

Information not available in the provided abstract.

Short Summary

This paper develops a simple intermediate coupled MJO-ENSO model to understand their bidirectional feedback and its role in modulating ENSO complexity, successfully capturing observed MJO and ENSO features and their critical interactions.

Objective

• To address critical gaps in understanding the bidirectional feedback between the Madden-Julian Oscillation (MJO) and the El Niño-Southern Oscillation (ENSO), and its role in modulating ENSO complexity, including spatial diversity, temporal evolution, and intensity variations.

Study Configuration

• Spatial Scale: Tropical Pacific basin, focusing on Central Pacific and Eastern Pacific regions, and tropical climate variability.
• Temporal Scale: Intraseasonal (MJO), interannual (ENSO), and decadal (Walker circulation) variability, extending to long-term variations.

Methodology and Data

• Models used: A simple intermediate coupled MJO-ENSO model.
• Data sources: The model captures several crucial observed MJO and ENSO features; however, specific data sources (e.g., satellite, observation, reanalysis products) used for comparison are not detailed in the abstract.

Main Results

• The developed model integrates multiscale processes, bridging intraseasonal, interannual, and decadal variability.
• It incorporates key mechanisms: interannual sea surface temperature (SST) modulating MJO, MJO-induced wind forcing triggering diverse ENSO events, and decadal variability modulating Eastern Pacific and Central Pacific event strength and frequency.
• The model successfully captures several crucial observed MJO and ENSO features, including non-Gaussian statistics, seasonal cycles, energy spectra, and spatial event patterns.
• It reproduces critical MJO-ENSO interactions such as warm pool edge extension, convective activity adjustments that modulate SST, and ENSO's dependence on MJO-driven easterly and westerly wind anomalies.

Contributions

• Advances the understanding of bidirectional feedback between MJO and ENSO, particularly in the context of ENSO complexity (spatial diversity, temporal evolution, intensity variations).
• Provides a useful tool for analyzing long-term variations of MJO-ENSO interactions.
• Enhances understanding of ENSO extreme events and their remote impacts.
• Contributes to improvements in seasonal forecasting and climate resilience.

Funding

Information not available in the provided abstract.

Citation

@article{Zhang2025Simple,
  author = {Zhang, Yinling and Chen, Nan and Moser, Charlotte},
  title = {A Simple Intermediate Coupled MJO‐ENSO Model: Multiscale Interactions and ENSO Complexity},
  journal = {Journal of Advances in Modeling Earth Systems},
  year = {2025},
  doi = {10.1029/2025ms005374},
  url = {https://doi.org/10.1029/2025ms005374}
}