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In this article, we review the interdisciplinary techniques (borrowed from physics, mathematics, statistics, machine-learning, etc.) and methodological framework that we have used to understand climate systems, which serve as examples of…

数据分析、统计与概率 · 物理学 2024-05-29 Alka Yadav , Sourish Das , Anirban Chakraborti

El Ni\~no exhibits distinct Eastern Pacific (EP) and Central Pacific (CP) types which are commonly, but not always consistently, distinguished from each other by different signatures in equatorial climate variability. Here, we propose an…

数据分析、统计与概率 · 物理学 2016-11-21 Marc Wiedermann , Alexander Radebach , Jonathan F. Donges , Jürgen Kurths , Reik V. Donner

Sub-seasonal climate forecasting (SSF) focuses on predicting key climate variables such as temperature and precipitation in the 2-week to 2-month time scales. Skillful SSF would have immense societal value, in areas such as agricultural…

机器学习 · 计算机科学 2020-06-25 Sijie He , Xinyan Li , Timothy DelSole , Pradeep Ravikumar , Arindam Banerjee

The El Ni\~no-Southern Oscillation (ENSO) is a fluctuation in sea surface temperature (SST) and pressure across the equatorial Pacific Ocean with a period of 2-7 years. As the largest mode of interannual variability on Earth, ENSO shapes…

大气与海洋物理 · 物理学 2026-03-05 PJ Tuckman , Da Yang

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

The effects of El Ni\~no's two distinct flavors, East Pacific (EP) and Central Pacific (CP)/Modoki El Ni\~no, on global climate variability have been studied intensively in recent years. Most of these studies have made use of linear…

大气与海洋物理 · 物理学 2021-01-11 Marc Wiedermann , Jonatan F. Siegmund , Jonathan F. Donges , Reik V. Donner

Westerly wind bursts (WWBs) have long been known to have a major impact on the development of El Ni\~no events. In particular, they amplify these events, with stronger events associated with a higher number of WWBs. We further find…

大气与海洋物理 · 物理学 2025-12-30 Georg A. Gottwald , Eli Tziperman , Alexey Fedorov

Most of the existing prediction methods gave a false alarm regarding the El Ni\~no event in 2014. A crucial aspect is currently limiting the success of such predictions, i.e. the stability of the slowly varying Pacific climate. This…

大气与海洋物理 · 物理学 2017-08-31 Qing Yi Feng , Henk A. Dijkstra

The El Ni\~no phenomenon, synonymously El Ni\~no-Southern Oscillation (ENSO), is an anomalous climatic oscillation in the Equatorial Pacific that occurs once every 3-8 years. It affects the earth's climate on a global scale. Whether it is a…

混沌动力学 · 物理学 2007-05-23 Debabrata Panja , Gerrit Burgers

The skill of the statistical as well as physics-based coupled climate models in predicting the El Ni\~no-Southern Oscillation (ENSO) is limited by their inability to represent the observed ENSO nonlinearity. A promising alternative, namely…

大气与海洋物理 · 物理学 2017-09-11 Shivsai Ajit Dixit , B N Goswami

The main objective of this article is to establish a new mechanism of the El Nino Southern Oscillation (ENSO), as a self-organizing and self-excitation system, with two highly coupled processes. The first is the oscillation between the two…

大气与海洋物理 · 物理学 2010-05-14 Tian Ma , Shouhong Wang

Discovering the underlying dynamics of complex systems from data is an important practical topic. Constrained optimization algorithms are widely utilized and lead to many successes. Yet, such purely data-driven methods may bring about…

动力系统 · 数学 2023-05-17 Nan Chen , Yinling Zhang

The El Ni\~no-Southern Oscillation (ENSO) is a mode of interannual variability in the coupled equatorial Pacific coupled atmosphere/ocean system. El Ni\~no describes a state in which sea surface temperatures in the eastern Pacific increase…

动力系统 · 数学 2017-10-10 John Guckenheimer , Axel Timmermann , Henk Dijkstra , Andrew Roberts

The El Ni\~no Southern Oscillation (ENSO) is a semi-periodic fluctuation in sea surface temperature (SST) over the tropical central and eastern Pacific Ocean that influences interannual variability in regional hydrology across the world…

大气与海洋物理 · 物理学 2023-01-24 Yumin Liu , Kate Duffy , Jennifer G. Dy , Auroop R. Ganguly

The El Ni\~no-Southern Oscillation (ENSO) is a mode of interannual variability in the coupled equatorial ocean/atmosphere Pacific. El Ni\~no describes a state in which sea surface temperatures in the eastern Pacific increase and upwelling…

大气与海洋物理 · 物理学 2016-07-12 John Guckenheimer , Andrew Roberts , Axel Timmermann , Henk Dijkstra

Understanding and representing complex climate variability is essential for both scientific analysis and predictive modeling. However, identifying meaningful climate regimes from raw variables is challenging, as they exhibit high noise and…

机器学习 · 计算机科学 2026-04-28 Lívia Meinhardt , Dário Oliveira

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…

When observing a phenomenon, severe cases or anomalies are often characterised by deviation from the expected data distribution. However, non-deviating data samples may also implicitly lead to severe outcomes. In the case of unsupervised…

机器学习 · 计算机科学 2020-05-18 Athanasios Davvetas , Iraklis A. Klampanos

Complex network theory provides a powerful toolbox for studying the structure of statistical interrelationships between multiple time series in various scientific disciplines. In this work, we apply the recently proposed climate network…

数据分析、统计与概率 · 物理学 2013-11-26 Alexander Radebach , Reik V. Donner , Jakob Runge , Jonathan F. Donges , Jürgen Kurths

El Ni\~no-Southern Oscillation (ENSO) is the most predominant interannual variability in the tropics, significantly impacting global weather and climate. In this paper, a framework of low-order conceptual models for the ENSO is…

地球物理 · 物理学 2023-08-09 Nan Chen , Yinling Zhang