期刊
SCIENCE ADVANCES
卷 6, 期 38, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aba8164
关键词
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资金
- Ministry of Earth Sciences (MoES), Government of India
- DFG project IUCLiD [DFG MA4759/8]
- German Federal Ministry for Education and Research via the Belmont Forum/JPI Climate project GOTHAM (BMBF) [01LP1611A]
- MoES, Govt. of India, via the Belmont Forum/JPI Climate Project GOTHAM
- DFG/FAPESP [IRTG 1740/TRP 2015/50122-0]
Coupling of the El Nino-Southern Oscillation (ENSO) and Indian monsoon (IM) is central to seasonal summer monsoon rainfall predictions over the Indian subcontinent, although a nonstationary relationship between the two nonlinear phenomena can limit seasonal predictability. Radiative effects of volcanic aerosols injected into the stratosphere during large volcanic eruptions (LVEs) tend to alter ENSO evolution; however, their impact on ENSO-IM coupling remains unclear. Here, we investigate how LVEs influence the nonlinear behavior of the ENSO and IM dynamical systems using historical data, 25 paleoclimate reconstructions, last-millennium climate simulations, large-ensemble targeted climate sensitivity experiments, and advanced analysis techniques. Our findings show that LVEs promote a significantly enhanced phase-synchronization of the ENSO and IM oscillations, due to an increase in the angular frequency of ENSO. The results also shed innovative insights into the physical mechanism underlying the LVE-induced enhancement of ENSO-IM coupling and strengthen the prospects for improved seasonal monsoon predictions.
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