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The ISMR profoundly impacts over a billion people across the region. ISMR extremes have been linked to the ENSO and modulated by the Indian Ocean Dipole (IOD). ISMR of 2022 displayed intriguing spatial patterns: above-normal precipitation…

Atmospheric and Oceanic Physics · Physics 2024-04-19 Supriya Ovhal , Mujumdar M , Swapna P , Sreenivas P , Sandeep N , Ravichandran M

Precipitation is one of the most important meteorological variables for defining the climate dynamics, but the spatial patterns of precipitation have not been fully investigated yet. The complex network theory, which provides a robust tool…

Atmospheric and Oceanic Physics · Physics 2013-08-22 Stefania Scarsoglio , Francesco Laio , Luca Ridolfi

The probability of a drought for a particular region is crucial when making decisions related to agriculture. Forecasting this probability is critical for management and challenging at the same time. The prediction model should consider…

Machine Learning · Computer Science 2022-09-02 V. Grabar , A. Lukashevich , A. Zaytsev

West African societies are highly dependent on the West African Monsoon (WAM).Thus, a correct representation of the WAM in climate models is of paramount importance. In this article, the ability of 8 CMIP5 historical General Circulation…

Atmospheric and Oceanic Physics · Physics 2024-01-26 Iñigo Gómara , Elsa Mohino , Teresa Losada , Marta Domínguez , Roberto Suárez-Moreno , Belén Rodríguez-Fonseca

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…

Data Analysis, Statistics and Probability · Physics 2024-05-29 Alka Yadav , Sourish Das , Anirban Chakraborti

As drought is among the natural hazards which affects people and economies worldwide and often results in huge monetary losses sophisticated methods for drought monitoring and decision making are needed. Several different approaches to…

Applications · Statistics 2015-08-27 Tobias M. Erhardt , Claudia Czado

Climate change is expected to increase the likelihood of drought events, with severe implications for food security. Unlike other natural disasters, droughts have a slow onset and depend on various external factors, making drought detection…

Grid (1{\deg} latitude x 1{\deg} longitude) level daily rainfall data over India from June to September for the years 1951 to 2007, generated by India Meteorological Department, was analyzed to build monthly time series of Standardized…

Atmospheric and Oceanic Physics · Physics 2015-09-16 M. Naresh Kumar , C. S. Murthy , M. V. R. Sesha Sai , P. S. Roy

Drought is a natural creeping threat with numerous damaging effects in various aspects of human life. Accurate drought prediction is a promising step in helping policy makers to set drought risk management strategies. To fulfill this…

Atmospheric and Oceanic Physics · Physics 2020-06-05 Yousef Hassanzadeh , Mohammadvaghef Ghazvinian , Amin Abdi , Saman Baharvand , Ali Jozaghi

Satellite and ground-based observations are used to explore the composite oceanic - atmospheric link known as the El Ni\~no/La Ni\~na Southern Oscillation (ENSO) phenomenon, which is closely associated with extreme weather events (e.g. heat…

Atmospheric and Oceanic Physics · Physics 2017-08-22 Costas A. Varotsos , Arthur P. Cracknell

We study the yearly values of the length of day (LOD, 1623-2016) and its link to the zonal index (ZI, 1873-2003), the Northern Atlantic oscillation index (NAO, 1659-2000) and the global sea surface temperature (SST, 1850-2016). LOD is…

Geophysics · Physics 2018-06-07 Adriano Mazzarella , Nicola Scafetta

Understanding how droughts may change in the future is essential for anticipating and mitigating their adverse impacts. However, robust climate projections require large amounts of high-resolution climate simulations, particularly for…

Atmospheric and Oceanic Physics · Physics 2025-09-29 Hamish Lewis , Neelesh Rampal , Peter B. Gibson , Luke J. Harrington , Chiara M. Holgate , Anna Ukkola , Nicola M. Maher

Europe was hit by several, disastrous heat and drought events in recent summers. Besides thermodynamic influences, such hot and dry extremes are driven by certain atmospheric situations including anticyclonic conditions. Effects of climate…

Machine Learning · Computer Science 2021-11-10 Magdalena Mittermeier , Maximilian Weigert , David Rügamer

This study investigates climate change impacts on Moroccan Atlantic coastal upwelling (21$^{\circ}$--35$^{\circ}$N), analyzing interrelationships among the North Atlantic Oscillation (NAO), Coastal Upwelling Index (CUI), and Sea Surface…

Atmospheric and Oceanic Physics · Physics 2025-12-18 Mohammed El Abdioui

The mean world climate has warmed since the 19th Century as the anthropogenic emission of greenhouse gases has increased the atmospheric opacity to thermal infrared radiation. Has this warming increased the frequency or severity of…

Atmospheric and Oceanic Physics · Physics 2019-09-19 S. Wang , J. I Katz

The present study examined a multi-year reanalysis dataset (ERA5-Land) including numerous drought events across the Iberian Peninsula, with a specific emphasis on the 2005 episode. The mechanisms underlying the transition from…

Atmospheric and Oceanic Physics · Physics 2024-01-18 M. Possega , M. García-Valdecasas Ojeda , S. R. Gámiz-Fortis

In recent decades, an increasing persistence of atmospheric circulation patterns has been observed. In the course of the associated long-lasting anticyclonic summer circulations, heat waves and drought spells often coincide, leading to…

Populations and Evolution · Quantitative Biology 2020-05-18 Allan Buras , Anja Rammig , Christian S. Zang

The beginning of the rainy season and the occurrence of dry spells in West Africa is notoriously difficult to predict, however these are the key indicators farmers use to decide when to plant crops, having a major influence on their overall…

Applications · Statistics 2026-02-11 Colin Bobocea , Yves Atchadé

Errors in applying regression models and wavelet filters used to analyze geophysical signals are discussed: (1) multidecadal natural oscillations (e.g. the quasi 60-year Atlantic Multidecadal Oscillation (AMO), North Atlantic Oscillation…

Atmospheric and Oceanic Physics · Physics 2013-05-14 Nicola Scafetta

High spatial resolution drought projections for the Iberian Peninsula (IP) have been examined in terms of duration, frequency, and severity of drought events. For this end, a set of regional climate simulations was completed using the…