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Intending to solve the decade old problem of solar opacity, we report substantial photoabsorption uncertainty due to the effect of ion-ion correlations. By performing detailed opacity calculations of the solar mixture, we find that taking…

Solar and Stellar Astrophysics · Physics 2018-03-01 Menahem Krief , Yair Kurzweil , Alexander Feigel , Doron Gazit

Recently, the study of the influence of solar activity on the Earth's climate received strong attention, mainly due to the possibility, proposed by several authors, that global warming is not anthropogenic, but is due to an increase in…

Atmospheric and Oceanic Physics · Physics 2017-10-11 P. J. D. Mauas , A. P. Buccino , E. Flamenco

In this paper we derive a new formula for the global temperature change and major feedback portions in the climate response. In our earlier paper we calculated from the experimental values the sensitivity about ${\rm 0.058~K/(W/m^2)}$. This…

Atmospheric and Oceanic Physics · Physics 2019-01-01 Jyrki Kauppinen , Pekka Malmi

Model parametrizations in the convective boundary layer are still at work especially in the interfacial layers with the surface and the free troposphere. The present paper reports simultaneous turbulence-scale lidar observations of wind…

Atmospheric and Oceanic Physics · Physics 2022-11-17 Fabien Gibert , Dimitri Edouart , Paul Monnier , Julie Collignan , Julio Lopez , Claire Cénac

A litany of research has been published claiming strong solar influences on the Earth's weather and climate. Much of this work includes documented errors and false-positives, yet is still frequently used to substantiate arguments of global…

Atmospheric and Oceanic Physics · Physics 2015-02-03 Benjamin A. Laken

We study the role of rotating sunspots in relation to the evolution of various physical parameters characterizing the non-potentiality of the active region NOAA 11158 and its eruptive events using the magnetic field data from the…

Solar and Stellar Astrophysics · Physics 2015-06-11 P. Vemareddy , A. Ambastha , R. A. Maurya

Near-surface atmospheric conditions can differ sharply over tens to hundreds of meters due to land cover and topography, yet this variability is absent from current weather analyses and forecasts. It is unclear whether such meter-scale…

We report on the amplitude of the density turbulence spectrum ($C_{N}^{2}$) and the density modulation index ($\delta N/N$) in the solar wind between $10$ and $45 R_{\odot}$. We derive these quantities using a structure function that is…

Solar and Stellar Astrophysics · Physics 2017-01-25 K. Sasikumar Raja , Madhusudan Ingale , R. Ramesh , Prasad Subramanian , P. K. Manoharan , P. Janardhan

The present work is aimed to examine the potential of advanced machine learning strategies to predict the monthly rainfall (precipitation) for the Indus Basin, using climatological variables such as air temperature, geo-potential height,…

Signal Processing · Electrical Eng. & Systems 2019-01-27 Hamidreza Ghasemi Damavandi , Reepal Shah

We measure the nonlinear refractive index coefficients in N$_2$, O$_2$ and Ar from visible through mid-infrared wavelengths (\lambda = 0.4 - 2.4 {\mu}m). The wavelengths investigated correspond to transparency windows in the atmosphere.…

Optics · Physics 2016-01-20 S. Zahedpour , J. K. Wahlstrand , H. M. Milchberg

We present experiments showing that a granular system of small beads does exhibit ageing properties : its maximum stability angle is measured to increase logarithmically with resting time, i.e. the time elapsed before performing the…

Condensed Matter · Physics 2007-05-23 L. Bocquet , E. Charlaix , S. Ciliberto , J. Crassous

This work studies the effect of the heterogeneity of a porous medium on convective mixing. We consider a system where a Rayleigh-B\'enard instability is triggered by a temperature difference between the top and bottom boundaries.…

Fluid Dynamics · Physics 2025-10-13 Rima Benhammadi , Juan J. Hidalgo

Density Functional Theory calculations are used to investigate the role of substrate-induced cooperative effects on the adsorption of water on a partially oxidized transition metal surface, O(2x2)/Ru(0001). Focussing particularly on the…

Materials Science · Physics 2015-05-19 Pepa Cabrera-Sanfelix , M. V. Fernández-Serra , A. Arnau , D. Sánchez-Portal

To assess the durability of structures, heat and moisture transport need to be analyzed. To provide a reliable estimation of heat and moisture distribution in a certain structure, one needs to include all available information about the…

Numerical Analysis · Computer Science 2013-03-19 Anna Kucerova , Jan Sykora

A functional time series approach is proposed for investigating spatial correlation in daily maximum temperature forecast errors for 111 cities spread across the U.S. The modelling of spatial correlation is most fruitful for longer forecast…

Methodology · Statistics 2021-11-23 Phillip A. Jang , David S. Matteson

Inhomogeneities in wave propagation conditions near and below the solar surface have been detected by means of time-distance helioseismology. Here we calculate the effect of temperature inhomogeneities on the travel times of sound waves. A…

Astrophysics · Physics 2015-06-24 M. Brüggen , H. C. Spruit

Results of a calculation of the c-axis infrared conductivity sigma_c for a d_{x^2-y^2}-wave superconductor which include both elastic impurity and inelastic spin-fluctuation scattering are presented and compared with the ab-plane…

supr-con · Physics 2009-10-30 P. J. Hirschfeld , S. M. Quinlan , D. J. Scalapino

The mean North American and world climates have warmed significantly since the beginning of climatologically significant anthropogenic emission of greenhouse gases in the 19th Century. It has been suggested that warming may increase the…

Atmospheric and Oceanic Physics · Physics 2014-06-03 T. Muschinski , J. I. Katz

This paper presents initial values of global and diffuse luminous efficacy at Saint-Pierre (Reunion Island). Firstly, data used were measured for a period of 6 months, from February to June 2008. During this period, all defined day-types…

Atmospheric and Oceanic Physics · Physics 2012-12-24 Ali Hamada Fakra , Harry Boyer , Frédéric Miranville , Dimitri Bigot

Positive terahertz photoconductivity is observed at room temperature in CdHgTe thin films with different Cd contents. We show that electron gas heating caused by Drude-like absorption results in positive photoconductivity because of the…