Evolution of Subtropical Pacific‐Onset El Niño: How Its Onset Location Controls Its Decay Evolution

نویسندگان

چکیده

In the observations, El Niño events initiated by a subtropical Pacific mechanism (SP-onset Niños) show larger uncertainty in their decay evolution patterns than those tropical mechanism. A 2,200-year simulation of Community Earth System Model reproduces this observed feature and its SP-onset Niños are analyzed to understand cause large uncertainty. Results that onset location Niño, which interacts with eastern edge western warm pool, is key factor controlling evolution. When located east (west) 155°E, event has strong tendency reverse (maintain) phase, leading cyclic (multiyear) These two locations respectively activate Indo-Pacific tropical-subtropical interactions give rise different patterns. The findings offer potential way predict using locations.

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ژورنال

عنوان ژورنال: Geophysical Research Letters

سال: 2021

ISSN: ['1944-8007', '0094-8276']

DOI: https://doi.org/10.1029/2020gl091345