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Very strong El Ni\~no events occur sporadically every 10-20 years. The origin of this bursting behavior still remains elusive. Using a simplified 3-dimensional dynamical model of the tropical Pacific climate system, which captures the El…

The emergence of oscillations in models of the El-Ni\~no effect is of utmost relevance. Here we investigate a coupled nonlinear delay differential system modeling theEl-Ni\~no/ Southern Oscillation (ENSO) phenomenon, which arises through…

大气与海洋物理 · 物理学 2017-05-24 Chandrakala Meena , Shweta Kumari , Akansha Sharma , Sudeshna Sinha

Forecasting the El Nino-Southern Oscillation (ENSO) has been a subject of vigorous research due to the important role of the phenomenon in climate dynamics and its worldwide socioeconomic impacts. Over the past decades, numerous models for…

大气与海洋物理 · 物理学 2019-12-12 Xinyang Wang , Joanna Slawinska , Dimitrios Giannakis

El Ni\~no-Southern Oscillation global (ENSO) imprint on sea surface temperature comes in many guises. To identify its tropical fingerprints and impacts on the rest of the climate system, we propose a global approach based on archetypal…

The El Ni\~no Southern Oscillation (ENSO) is the Earth's strongest climate fluctuation on inter-annual time-scales and has global impacts although originating in the tropical Pacific. Many point indices have been developed to describe ENSO…

大气与海洋物理 · 物理学 2012-06-27 A. Mazzarella , A. Giuliacci , N. Scafetta

A non-autonomous stochastic dynamical model approach is developed to describe the seasonal to interannual variability of the El Ni\~no-Southern Oscillation (ENSO). We determine the model coefficients by systematic statistical estimations…

大气与海洋物理 · 物理学 2020-12-21 L. T. Giorgini , W. Moon , N. Chen , J. S. Wettlaufer

Tropical cyclones (TCs), including hurricanes and typhoons, cause significant property damage and result in fatalities, making it crucial to understand the factors driving extreme TCs. The El Nino Southern Oscillation (ENSO) influences TC…

大气与海洋物理 · 物理学 2024-10-10 Suchit Basineni

The El Nino southern oscillation (ENSO) behavior can be effectively modeled as a response to a 2nd-order Mathieu/Hill differential equation with periodic coefficients describing sloshing of a volume of water. The forcing of the equation…

大气与海洋物理 · 物理学 2020-09-01 Paul R. Pukite

The mechanisms of interaction between the seasonal cycle and ENSO are investigated using the Zebiak and Cane ENSO prediction model. The most dominant seasonal effect is found to be due to the wind divergence field, as determined by the…

ao-sci · 物理学 2008-02-03 Eli Tziperman , Steve Zebiak , Mark Cane

Long-term stability stands as a crucial requirement in data-driven medium-range global weather forecasting. Spectral bias is recognized as the primary contributor to instabilities, as data-driven methods difficult to learn small-scale…

机器学习 · 计算机科学 2024-07-03 Yifan Hu , Fukang Yin , Weimin Zhang , Kaijun Ren , Junqiang Song , Kefeng Deng , Di Zhang

The representation of nonlinear sub-grid processes, especially clouds, has been a major source of uncertainty in climate models for decades. Cloud-resolving models better represent many of these processes and can now be run globally but…

大气与海洋物理 · 物理学 2022-06-08 Stephan Rasp , Michael S. Pritchard , Pierre Gentine

The recharge oscillator (RO) model has been successfully used to understand different aspects of the El Ni\~no-Southern Oscillation (ENSO). Fitting the RO to observations and climate model simulations consistently suggests that ENSO is a…

大气与海洋物理 · 物理学 2025-04-09 Elle Weeks , Eli Tziperman

Dominant modes of SST in the west and east Pacific show strong but regionally different gradients caused by waves, internal dynamics, and anthropogenic warming, which drives air-sea interaction in the Pacific. The study discusses the…

大气与海洋物理 · 物理学 2024-07-08 Lekshmi S , Rajib Chattopadhyay , D. S. Pai , M. Rajeevan , Vinu Valsala , K. S. Hosalikar , M. Mohapatra

Seasonal forecasting remains challenging due to the inherent chaotic nature of atmospheric dynamics. This paper introduces DeepSeasons, a novel deep learning approach designed to enhance the accuracy and reliability of seasonal forecasts.…

大气与海洋物理 · 物理学 2025-09-16 A. Navarra , G. G. Navarra

Despite advances in climate modeling, simulating the El Ni\~no-Southern Oscillation (ENSO) remains challenging due to its spatiotemporal diversity and complexity. To address this, we build upon existing model hierarchies to develop a new…

大气与海洋物理 · 物理学 2025-03-27 Jinyu Wang , Xianghui Fang , Nan Chen , Bo Qin , Mu Mu , Chaopeng Ji

Variational inference is becoming more and more popular for approximating intractable posterior distributions in Bayesian statistics and machine learning. Meanwhile, a few recent works have provided theoretical justification and new…

统计理论 · 数学 2019-09-09 Badr-Eddine Chérief-Abdellatif

Deep-learning (DL) weather prediction models offer some notable advantages over traditional physics-based models, including auto-differentiability and low computational cost, enabling detailed diagnostics of forecast errors. Using our…

大气与海洋物理 · 物理学 2025-07-23 Uros Perkan , Ziga Zaplotnik , Gregor Skok

In recent years, the application of machine learning approaches to time-series forecasting of climate dynamical phenomena has become increasingly active. It is known that applying a band-pass filter to a time-series data is a key to…

计算物理 · 物理学 2025-05-26 Takuya Jinno , Takahito Mitsui , Kengo Nakai , Yoshitaka Saiki , Tsuyoshi Yoneda

Many record-breaking climate extremes arise from both greenhouse gas-induced warming and natural climate variability. Marine cloud brightening, a solar geoengineering strategy originally proposed to reduce long-term warming, could…

大气与海洋物理 · 物理学 2024-06-13 Jessica S. Wan , John T. Fasullo , Nan Rosenbloom , Chih-Chieh Jack Chen , Katharine Ricke

The complexity of real-world geophysical systems is often compounded by the fact that the observed measurements depend on hidden variables. These latent variables include unresolved small scales and/or rapidly evolving processes, partially…