The variations of ENSO teleconnections during the Last Interglacial based on PMIP4 simulations

Ma, Jialu; Yan, Qing; Wang, Huijun

doi:10.1016/j.palaeo.2024.112193

Palaeogeography, Palaeoclimatology, Palaeoecology

2024

DOI: 10.1016/j.palaeo.2024.112193

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The variations of ENSO teleconnections during the Last Interglacial based on PMIP4 simulations

Jialu Ma,

Qing Yan,

Huijun Wang

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Opposing Changes in Indian Summer Monsoon Rainfall Variability Produced by Orbital and Anthropogenic Forcing

He,

Sun,

Wang

et al. 2024

Geophysical Research Letters

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Future projections indicate that Indian Summer Monsoon Rainfall (ISMR) faces a “wetter and more variable” climate. However, the reasons remain uncertain. The Last Interglacial (LIG) climate provides a potential analog for future warming. Investigating ISMR responses to these two warming scenarios could help understand the causes of ISMR changes. Using PMIP4 simulations, we find that ISMR became “wetter and more stable” during the LIG, contrasting the future climate. The opposing changes in ISMR variability are related to divergent changes in the El Niño‐Southern Oscillation (ENSO) amplitudes, ENSO‐ISMR relationships, and ENSO‐induced large‐scale atmospheric circulation anomalies. During the LIG, orbital forcing weakened ENSO variability and its impacts on ISMR. A westward positioning of ENSO shifted the atmospheric circulation anomalies westward, suppressing extreme ISMR anomalies. These processes are supported by atmospheric model simulations. Our results suggest that different warming patterns (dynamic effects) are more critical than moisture‐increasing effects in controlling regional climate variability.

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Opposing Changes in Indian Summer Monsoon Rainfall Variability Produced by Orbital and Anthropogenic Forcing

He,

Sun,

Wang

et al. 2024

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

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The variations of ENSO teleconnections during the Last Interglacial based on PMIP4 simulations

Cited by 1 publication

References 49 publications

Opposing Changes in Indian Summer Monsoon Rainfall Variability Produced by Orbital and Anthropogenic Forcing

Opposing Changes in Indian Summer Monsoon Rainfall Variability Produced by Orbital and Anthropogenic Forcing

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