Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Interactions between Tropical Atlantic and Tropical Pacific in CMIP6 Models. |
| Συγγραφείς: |
ZHAO, YINGYING1,2,3 zhaoyywl@163.com, CAPOTONDI, ANTONIETTA4,5 maria-antonietta.capotondi@colorado.edu |
| Πηγή: |
Journal of Climate. May2026, Vol. 39 Issue 9, p1-20. 20p. |
| Θεματικοί όροι: |
*Climate change forecasts, *Climate change, *Causal models, *Atmospheric models, El Niño |
| Γεωγραφικοί όροι: |
Pacific Ocean, Atlantic Ocean |
| Περίληψη: |
Interactions between tropical Pacific and tropical Atlantic (TP-TA) play a crucial role in tropical Pacific climate variability and predictability on a broad range of timescales. However, the ability of state-of-the-art climate models to simulate these cross-basin interactions remains uncertain. This study systematically evaluates the representation of TP-TA interactions in 34 climate models from the Coupled Model Intercomparison Project Phase 6 (CMIP6). While models generally reproduce the spatial patterns of key tropical climate modes, significant biases are found in their amplitudes, seasonality (particularly for the Equatorial Atlantic mode), and spectral characteristics. Notably, most models substantially underestimate Atlantic impacts on spatiotemporal aspects of El Niño-Southern Oscillation (ENSO). To disentangle the bidirectional coupling mechanisms, we employ a Linear Inverse Model (LIM) that allows to selectively isolate Atlantic-to-Pacific versus Pacific-to-Atlantic coupling. Our analysis reveals two key aspects of TP-TA interactions: (1) internal Atlantic variability enhances Pacific climate variance across interannual and decadal timescales, and (2) Pacific-driven Atlantic variability reduces tropical Pacific low-frequency variability. Although these influences qualitatively agree with observations, their simulated intensities are markedly weaker. Furthermore, we identify considerable inter-model spread in representing TA impacts on TP variability, highlighting persistent challenges in achieving robust model consensus. Our findings underscore the need to improve the representation of TP-TA interactions in climate models, particularly through more realistic simulations of tropical Atlantic dynamics and their seasonal evolution, to make progress in seasonal-to-decadal climate predictions. [ABSTRACT FROM AUTHOR] |
| Βάση Δεδομένων: |
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