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With growing amounts of wind and solar power in the electricity mix of many European countries, understanding and predicting variations of renewable energy generation at multiple timescales is crucial to ensure reliable electricity systems.…

Physics and Society · Physics 2022-02-08 Llorenç Lledó , Jaume Ramon , Albert Soret , Francisco-Javier Doblas-Reyes

The Composite InfraRed Spectrometer (CIRS) on board Cassini revealed an equatorial oscillation of stratospheric temperature, reminiscent of the Earth's Quasi-Biennial Oscillation (QBO), as well as anomalously high temperatures under…

Atmospheric and Oceanic Physics · Physics 2020-08-26 Deborah Bardet , Aymeric Spiga , Sandrine Guerlet , Simon Cabanes , Ehouarn Millour , Alexandre Boissinot

The solar cycle and its associated magnetic activity are the main drivers behind changes in the interplanetary environment and the Earth's upper atmosphere (commonly referred to as space weather). These changes have a direct impact on the…

Solar and Stellar Astrophysics · Physics 2013-04-12 Andrés Muñoz-Jaramillo , María Dasi-Espuig , Laura A. Balmaceda , Edward E. DeLuca

Observations of energetic electrons (10 - 300 keV) by NOAA/POES and DMSP satellites at heights <1000 km during the period from 1999 to 2010 allowed finding abnormal intense fluxes of ~10^6 - 10^7 cm-2 s-1 sr-1 for quasi-trapped electrons…

Climate (change) affects the prices of goods and services in different countries or regions differently. Simply relying on aggregate measures or summary statistics, such as the impact of average country temperature changes on HICP headline…

General Economics · Economics 2024-01-09 Paulo M. M. Rodrigues , Mirjam Salish , Nazarii Salish

Understanding the atmospheric low-frequency variability is of crucial importance in fields such as climate studies, climate change detection, and extended-range weather forecast. The Northern Hemisphere climate features the planetary waves…

Atmospheric and Oceanic Physics · Physics 2007-05-23 Paolo M. Ruti , Valerio Lucarini , Alessandro Dell'Aquila , Sandro Calmanti , Antonio Speranza

We present a non-linear AI-model designed to reconstruct monthly mean anomalies of the European temperature and precipitation based on the Euro-Atlantic Weather regimes (WR) indices. WR represent recurrent, quasi-stationary, and persistent…

Machine Learning · Computer Science 2025-12-11 A. Camilletti , G. Franch , E. Tomasi , M. Cristoforetti

We present and discuss the strong correspondence between evolution of the emission length scale in the lower transition region and in situ measurements of the fast solar wind composition during this most recent solar minimum. We combine…

Solar and Stellar Astrophysics · Physics 2015-05-30 Scott W. McIntosh , Kandace K. Kiefer , Robert J. Leamon , Justin C. Kasper , Michael S. Stevens

Observations and quantitative understanding of spatio-temporary variations in lower-stratospheric ozone and temperature can provide fingerprints for the mechanisms of ozone depletion and play an important role in testing the impact of…

Chemical Physics · Physics 2025-01-07 Qing-Bin Lu

It is known that the so-called problem of solar power pacemaker related to possible existence of some hidden but key mechanism of energy influence of the Sun on fundamental geophysical processes is one of the principal and puzzling problems…

We present the analysis of temperature variations in Portugal for 140 years (from 1865 to 2005). The two stations with the longest time series of temperature measurements (Lisbon and Coimbra) have been used to study the dependence of the…

Atmospheric and Oceanic Physics · Physics 2010-09-07 A. L. Morozova , P. Thejll , M. A. Pais

The relatively warm climate found in the North- Western Europe is due to the gulf stream that circulates warm saline water from southern latitudes to Europe. In North Atlantic ocean the stream gives out a large amount of heat, cools down…

Atmospheric and Oceanic Physics · Physics 2008-05-16 Ajay Patwardhan , Vivek Tewary

River streamflows are excellent climatic indicators since they integrate precipitation over large areas. Here we follow up on our previous study of the influence of solar activity on the flow of the Parana River, in South America. We find…

Solar and Stellar Astrophysics · Physics 2010-03-04 Pablo Mauas , Andrea P. Buccino , Eduardo Flamenco

The nocturnal mesopause region of the Earth's atmosphere radiates chemiluminescent emission from various roto-vibrational bands of hydroxyl (OH), which is therefore a good tracer of the chemistry and dynamics at the emission altitudes.…

Atmospheric and Oceanic Physics · Physics 2023-05-04 Stefan Noll , Carsten Schmidt , Wolfgang Kausch , Michael Bittner , Stefan Kimeswenger

Recently the global average temperature has temporarily exceeded the 1.5{\deg}C goal of the Paris Agreement, and so an overshoot of various climate tipping elements becomes increasingly likely. In this study we analyze the physical…

Atmospheric and Oceanic Physics · Physics 2025-04-18 Jelle Soons , Tobias Grafke , René M. van Westen , Henk A. Dijkstra

The phenomenon of solar "torsional oscillations" (TO) represents migratory zonal flows associated with the solar cycle. These flows are observed on the solar surface and, according to helioseismology, extend through the convection zone. We…

Solar and Stellar Astrophysics · Physics 2016-08-31 G. Guerrero , P. K. Smolarkiewicz , E. M. de Gouveia Dal Pino , A. G. Kosovichev , N. N. Mansour

In this article, we present a mathematical theory of the Walker circulation of the large-scale atmosphere over the tropics. This study leads to a new metastable state oscillation theory for the El Nino Southern Oscillation (ENSO), a typical…

Mathematical Physics · Physics 2010-05-14 Tian Ma , Shouhong Wang

The solar polar fields reverse because magnetic flux from decaying sunspots moves towards the poles, with a preponderance of flux from the trailing spots. Let us assume that there is a strong asymmetry in the sense that all activity is in…

Solar and Stellar Astrophysics · Physics 2015-06-05 Leif Svalgaard , Yohsuke Kamide

A set of idealized experiments are performed to analyze the competing effects of declining atmospheric CO2 concentrations, the opening of an ocean gateway, and varying orbital parameters. These forcing mechanisms, which influence the global…

Atmospheric and Oceanic Physics · Physics 2016-02-04 Eileen Hertwig , Frank Lunkeit , Klaus Fraedrich

The availability of continuous helioseismic data for two consecutive solar minima has provided a unique opportunity to study the changes in the solar interior that might have led to this unusual minimum. We present preliminary analysis of…

Solar and Stellar Astrophysics · Physics 2010-02-12 Kiran Jain , S. C. Tripathy , O. Burtseva , I. Gonzalez Hernandez , F. Hill , R. Howe , S. Kholikov , R. Komm , J. Leibacher
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