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Light propagation in ocean is influenced by the refractive-index which is related to temperature, salinity, outer-scale, etc. Based on Hill's model 1 (H1), two kinds of oceanic refractive-index spectrum (ORIS) have been proposed to describe…

大气与海洋物理 · 物理学 2020-01-15 Jian-Dong Cai , Jin-Ren Yao , Han-Tao Wang , Hua-Jun Zhang , Ming-Yuan Ren , Yu Zhang

We present an analysis on the detection viability of refraction effects in Kepler's exoplanet atmospheres using binning techniques for their light curves in order to compare against simulated refraction effects. We split the Kepler…

地球与行星天体物理 · 物理学 2025-07-04 Dereck-Alexandre Lizotte , Jason Rowe , James Sikora , Michael R. B. Matesic

We investigate how the existence of hydrogen molecules on grain surfaces may affect H$_2$ formation efficiency in diffuse and translucent clouds. Hydrogen molecules are able to reduce the desorption energy of H atoms on grain surfaces in…

星系天体物理 · 物理学 2022-03-30 Gang Zhao , Qiang Chang , Xia Zhang , Donghui Quan , Yong Zhang , Xiao-Hu Li

Deep saline aquifers used for CO$_2$ sequestration are commonly made of sedimentary formations consisting of several layers of distinguishable permeability. In this work, the effect of a non-monotonic, vertically varying permeability…

流体动力学 · 物理学 2021-09-28 Emmanuel E. Luther , Seyed M. Shariatipour , Ran Holtzman , Michael C. Dallaston

We describe a new model for image propagation through open air in the presence of changes in the index of refraction (e.g. due to turbulence) using the theory of optimal transport. We describe the relationship between photon density, or…

The mesoscale model Meso-NH is used to simulate the optical turbulence at Mt Graham (Arizona, USA), site of the Large Binocular Telescope. Measurements of the CN2-profiles obtained with a generalized scidar from 41 nights are used to…

天体物理仪器与方法 · 物理学 2011-05-16 S. Hagelin , E. Masciadri , F. Lascaux

We investigated theoretically water evaporation from concentrated supramolecular mixtures, such as solutions of polymers or amphiphilic molecules, using numerical resolutions of a one dimensional model based on mass transport equations.…

软凝聚态物质 · 物理学 2017-10-25 Jean-Baptiste Salmon , Frédéric Doumenc , Béatrice Guerrier

This report models the refractive index above a telescope site by an atmosphere with exponential decay of the refractive index (susceptibility) as a function of altitude. The air is represented as a spherical hull around the surface. We…

天体物理仪器与方法 · 物理学 2020-08-18 Richard J. Mathar

We study all possible sources of inaccuracy in theoretical values of the photometric observables, i.e. amplitude ratios and phase differences, of early B-type main sequence pulsators. Here, we discuss effects of parameters coming from both…

太阳与恒星天体物理 · 物理学 2015-05-19 J. Daszyńska-Daszkiewicz , W. Szewczuk

A model is described that relates the temperature coefficient of the optical absorption spectrum of pure water to the frequency derivative of that spectrum and two parameters that quantify the dependence of a peak's amplitude and its…

材料科学 · 物理学 2015-06-12 J. B. Cumming

Wettability is a pore-scale property that impacts the relative movement and distribution of fluids in a porous medium. There are reservoir fluids that provoke the surface within pores to undergo a wettability change. This wettability…

地球物理 · 物理学 2020-08-18 Abay M. Kassa , Sarah E. Gasda , K. Kumar , F. A. Radu

Scintillometer measurements of the turbulence inner-scale length $l_o$ and refractive index structure function $C_n^2$ allow for the retrieval of large-scale area-averaged turbulent fluxes in the atmospheric surface layer. This retrieval…

大气与海洋物理 · 物理学 2013-09-10 Matthew A. Gruber , Gilberto J. Fochesatto

Condensing atmospheric water vapor on surfaces is a sustainable approach to potentially address the potable water crisis. However, despite extensive research, a key question remains: what is the physical mechanism governing the condensation…

流体动力学 · 物理学 2023-05-31 Tibin M. Thomas , Pallab Sinha Mahapatra , Ranjan Ganguly , Manish K. Tiwari

The influence of the boundary layer properties on the heat transport in turbulent thermal convection is experimentally investigated in a cell with a rough bottom plate.It is shown that the standard 2/7 exponent of the convective heat flow…

chao-dyn · 物理学 2009-10-31 S. Ciliberto , C. Laroche

Measurements with a glider show that thermal theories published for decades need to be revised. We present a corrected view of temperature and humidity in thermal updrafts.

大气与海洋物理 · 物理学 2022-11-02 Oliver Predelli , Ronald Niederhagen

Atmospheric monitoring is an integral part of the design of the Cherenkov Telescope Array (CTA), as atmospheric conditions affect the observations by Imaging Atmospheric Cherenkov Telescopes (IACT) in multiple ways. The variable optical…

Whole atmosphere seeing \beta_0 is the most important parameter in site testing measurements. Estimation of the seeing from a variance of differential image motion is always biased by a non-zero DIMM exposure, which results in a wind…

天体物理仪器与方法 · 物理学 2015-05-30 V. Kornilov , B. Safonov

We study charge and heat transport in the square lattice Hubbard model at strong coupling using the finite-temperature Lanczos method. We construct the diffusion matrix and estimate the effect of thermoelectric terms on diffusive and…

强关联电子 · 物理学 2023-10-13 Martin Ulaga , Jernej Mravlje , Jure Kokalj

We study shallow moist Rayleigh-Benard convection in the Boussinesq approximation in three-dimensional direct numerical simulations. The thermodynamics of phase changes is approximated by a piecewise linear equation of state close to the…

流体动力学 · 物理学 2010-06-25 Joerg Schumacher , Olivier Pauluis

Intermittency is an essential property of astrophysical fluids, which demonstrate an extended inertial range. As intermittency violates self-similarity of motions, it gets impossible to naively extrapolate the properties of fluid obtained…

天体物理学 · 物理学 2011-05-10 A. Lazarian