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1. Structural fluctuations of the Arctic Oscillation tied to the Atlantic Multidecadal Oscillation

   https://doi.org/10.1038/s41612-024-00805-z  

   Gong, Hainan; Ma, Kangjie; Liu, Bo; Cohen, Judah; Wang, Lin (December 2024, npj Climate and Atmospheric Science)

   The Arctic Oscillation (AO) has been observed to undergo distinct decadal structural fluctuations that significantly influence regional weather and climate. Understanding the drivers and mechanisms behind the AO’s spatial nonstationarity is critical for improving climate predictions related to the AO. Wepresent evidence that the Atlantic Multidecadal Oscillation (AMO) plays a pivotal role in modulating AO’s Pacific center in recent decades. The poleward amplified cooling associated with negative AMO enhances the north-south temperature gradient and results the strengthened westerly winds and stratospheric polar vortex (SPV) responses, which reflects more planetary waves from the North Pacific to the North Atlantic. This enhances the atmospheric coupling between these regions and leads to amore pronounced Pacific center within theAOpattern.Numerical simulations fromECHAM5 and 35 CMIP6 models further corroborate the essential role of the AMO. These findings advance our understanding of the mechanisms driving the variability of the AO pattern. 

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2. The influence of the quasi-biennial oscillation on the Madden–Julian oscillation

   https://doi.org/10.1038/s43017-021-00173-9  

   Martin, Zane; Son, Seok-Woo; Butler, Amy; Hendon, Harry; Kim, Hyemi; Sobel, Adam; Yoden, Shigeo; Zhang, Chidong (July 2021, Nature Reviews Earth & Environment)
3. Topological optical parametric oscillation

   https://doi.org/10.1515/nanoph-2021-0765  

   Roy, Arkadev; Parto, Midya; Nehra, Rajveer; Leefmans, Christian; Marandi, Alireza (February 2022, Nanophotonics)

   Abstract Topological insulators possess protected boundary states which are robust against disorders and have immense implications in both fermionic and bosonic systems. Harnessing these topological effects in nonequilibrium scenarios is highly desirable and has led to the development of topological lasers. The topologically protected boundary states usually lie within the bulk bandgap, and selectively exciting them without inducing instability in the bulk modes of bosonic systems is challenging. Here, we consider topological parametrically driven nonlinear resonator arrays that possess complex eigenvalues only in the edge modes in spite of the uniform pumping. We show parametric oscillation occurs in the topological boundary modes of one and two dimensional systems as well as in the corner modes of a higher order topological insulator system. Furthermore, we demonstrate squeezing dynamics below the oscillation threshold, where the quantum properties of the topological edge modes are robust against certain disorders. Our work sheds light on the dynamics of weakly nonlinear topological systems driven out-of-equilibrium and reveals their intriguing behavior in the quantum regime. 

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4. El Niño–Southern Oscillation complexity

   https://doi.org/10.1038/s41586-018-0252-6  

   Timmermann, Axel; An, Soon-Il; Kug, Jong-Seong; Jin, Fei-Fei; Cai, Wenju; Capotondi, Antonietta; Cobb, Kim M.; Lengaigne, Matthieu; McPhaden, Michael J.; Stuecker, Malte F.; et al (July 2018, Nature)
5. Monitoring Bodily Oscillation With RFID Tags

   https://doi.org/10.1109/JIOT.2019.2892000  

   Zhang, Youlin; Chen, Shigang; Zhou, You; Fang, Yuguang; Qian, Chen (April 2019, IEEE Internet of Things Journal)